/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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:37:02,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:37:02,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:37:02,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:37:02,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:37:02,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:37:02,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:37:02,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:37:02,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:37:02,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:37:02,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:37:02,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:37:02,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:37:02,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:37:02,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:37:02,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:37:02,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:37:02,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:37:02,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:37:02,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:37:02,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:37:02,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:37:02,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:37:02,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:37:02,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:37:02,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:37:02,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:37:02,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:37:02,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:37:02,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:37:02,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:37:02,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:37:02,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:37:02,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:37:02,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:37:02,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:37:02,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:37:02,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:37:02,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:37:02,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:37:02,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:37:02,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:37:02,598 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:37:02,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:37:02,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:37:02,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:37:02,601 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:37:02,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:37:02,602 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:37:02,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:37:02,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:37:02,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:37:02,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:37:02,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:37:02,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:37:02,603 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:37:02,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:37:02,604 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:37:02,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:37:02,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:37:02,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:37:02,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:37:02,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:37:02,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:37:02,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:37:02,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:37:02,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:37:02,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:37:02,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:37:02,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:37:02,606 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:37:02,607 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:37:02,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:37:03,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:37:03,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:37:03,039 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:37:03,039 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:37:03,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-27 05:37:03,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed694bb5f/05e4d39724c94bf9a2d571e5a2afbd2c/FLAG2409af97b [2020-10-27 05:37:04,200 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:37:04,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-27 05:37:04,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed694bb5f/05e4d39724c94bf9a2d571e5a2afbd2c/FLAG2409af97b [2020-10-27 05:37:04,701 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed694bb5f/05e4d39724c94bf9a2d571e5a2afbd2c [2020-10-27 05:37:04,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:37:04,711 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:37:04,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:37:04,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:37:04,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:37:04,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:37:04" (1/1) ... [2020-10-27 05:37:04,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d78092f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:04, skipping insertion in model container [2020-10-27 05:37:04,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:37:04" (1/1) ... [2020-10-27 05:37:04,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:37:04,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:37:05,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:37:05,909 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:37:06,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:37:06,248 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:37:06,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:06 WrapperNode [2020-10-27 05:37:06,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:37:06,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:37:06,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:37:06,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:37:06,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:06" (1/1) ... [2020-10-27 05:37:06,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:06" (1/1) ... [2020-10-27 05:37:06,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:06" (1/1) ... [2020-10-27 05:37:06,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:06" (1/1) ... [2020-10-27 05:37:06,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:06" (1/1) ... [2020-10-27 05:37:06,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:06" (1/1) ... [2020-10-27 05:37:06,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:06" (1/1) ... [2020-10-27 05:37:06,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:37:06,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:37:06,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:37:06,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:37:06,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:37:06,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:37:06,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:37:06,606 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:37:06,606 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:37:06,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:37:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:37:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:37:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:37:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:37:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:37:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:37:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:37:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:37:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:37:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:37:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:37:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:37:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:37:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:37:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:37:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:37:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:37:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:37:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:37:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:37:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:37:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:37:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:37:10,758 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:37:10,760 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:37:10,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:37:10 BoogieIcfgContainer [2020-10-27 05:37:10,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:37:10,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:37:10,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:37:10,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:37:10,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:37:04" (1/3) ... [2020-10-27 05:37:10,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299cbe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:37:10, skipping insertion in model container [2020-10-27 05:37:10,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:06" (2/3) ... [2020-10-27 05:37:10,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299cbe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:37:10, skipping insertion in model container [2020-10-27 05:37:10,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:37:10" (3/3) ... [2020-10-27 05:37:10,777 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-27 05:37:10,791 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:37:10,797 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:37:10,811 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:37:10,858 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:37:10,858 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:37:10,858 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:37:10,859 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:37:10,859 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:37:10,859 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:37:10,859 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:37:10,859 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:37:10,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states. [2020-10-27 05:37:10,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 05:37:10,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:37:10,939 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] [2020-10-27 05:37:10,940 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:37:10,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:37:10,957 INFO L82 PathProgramCache]: Analyzing trace with hash -966739044, now seen corresponding path program 1 times [2020-10-27 05:37:10,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:37:10,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704034599] [2020-10-27 05:37:10,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:37:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:37:11,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:11,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:12,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:12,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:13,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:14,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:16,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:16,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:37:16,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 05:37:16,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:37:16,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-27 05:37:16,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:37:16,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 05:37:16,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:37:16,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 05:37:16,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 05:37:18,366 WARN L193 SmtUtils]: Spent 982.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:37:18,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:37:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:37:18,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:18,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:37:18,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:37:18,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:37:18,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 05:37:18,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:37:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:37:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:37:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:37:18,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:37:18,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:37:18,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704034599] [2020-10-27 05:37:18,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:37:18,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 05:37:18,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295653869] [2020-10-27 05:37:18,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 05:37:18,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:37:18,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 05:37:18,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-27 05:37:18,591 INFO L87 Difference]: Start difference. First operand 1130 states. Second operand 15 states. [2020-10-27 05:37:19,704 WARN L193 SmtUtils]: Spent 936.00 ms on a formula simplification that was a NOOP. DAG size: 362 [2020-10-27 05:37:33,484 WARN L193 SmtUtils]: Spent 896.00 ms on a formula simplification that was a NOOP. DAG size: 355 [2020-10-27 05:37:35,526 WARN L193 SmtUtils]: Spent 854.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:37:36,516 WARN L193 SmtUtils]: Spent 927.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-27 05:37:37,545 WARN L193 SmtUtils]: Spent 977.00 ms on a formula simplification that was a NOOP. DAG size: 347 [2020-10-27 05:37:42,225 WARN L193 SmtUtils]: Spent 911.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 05:37:42,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:37:42,773 INFO L93 Difference]: Finished difference Result 3330 states and 5698 transitions. [2020-10-27 05:37:42,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 05:37:42,775 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-27 05:37:42,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:37:42,818 INFO L225 Difference]: With dead ends: 3330 [2020-10-27 05:37:42,819 INFO L226 Difference]: Without dead ends: 2538 [2020-10-27 05:37:42,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=250, Invalid=872, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 05:37:42,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2020-10-27 05:37:43,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2002. [2020-10-27 05:37:43,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2002 states. [2020-10-27 05:37:43,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 2712 transitions. [2020-10-27 05:37:43,060 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 2712 transitions. Word has length 56 [2020-10-27 05:37:43,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:37:43,061 INFO L481 AbstractCegarLoop]: Abstraction has 2002 states and 2712 transitions. [2020-10-27 05:37:43,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 05:37:43,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 2712 transitions. [2020-10-27 05:37:43,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 05:37:43,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:37:43,069 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] [2020-10-27 05:37:43,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:37:43,070 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:37:43,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:37:43,071 INFO L82 PathProgramCache]: Analyzing trace with hash 517956793, now seen corresponding path program 1 times [2020-10-27 05:37:43,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:37:43,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591898738] [2020-10-27 05:37:43,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:37:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:37:43,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:43,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:43,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:43,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:44,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:45,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:45,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:45,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:47,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:48,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:37:48,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 05:37:48,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:37:48,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 05:37:48,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:37:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:37:48,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:37:48,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 05:37:48,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:37:49,294 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:37:49,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:37:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:37:49,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:49,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:37:49,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:37:49,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:37:49,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 05:37:49,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:37:49,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:37:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:37:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:37:49,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:37:49,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:37:49,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591898738] [2020-10-27 05:37:49,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:37:49,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:37:49,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436814539] [2020-10-27 05:37:49,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:37:49,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:37:49,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:37:49,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:37:49,416 INFO L87 Difference]: Start difference. First operand 2002 states and 2712 transitions. Second operand 11 states. [2020-10-27 05:37:51,500 WARN L193 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 356 DAG size of output: 354 [2020-10-27 05:38:01,869 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 358 DAG size of output: 351 [2020-10-27 05:38:03,207 WARN L193 SmtUtils]: Spent 904.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:38:05,096 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 354 DAG size of output: 352 [2020-10-27 05:38:09,860 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 353 DAG size of output: 351 [2020-10-27 05:38:10,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:38:10,347 INFO L93 Difference]: Finished difference Result 4150 states and 5874 transitions. [2020-10-27 05:38:10,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 05:38:10,347 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-10-27 05:38:10,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:38:10,370 INFO L225 Difference]: With dead ends: 4150 [2020-10-27 05:38:10,370 INFO L226 Difference]: Without dead ends: 3848 [2020-10-27 05:38:10,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2020-10-27 05:38:10,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3848 states. [2020-10-27 05:38:10,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3848 to 2048. [2020-10-27 05:38:10,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2048 states. [2020-10-27 05:38:10,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 2772 transitions. [2020-10-27 05:38:10,526 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 2772 transitions. Word has length 56 [2020-10-27 05:38:10,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:38:10,527 INFO L481 AbstractCegarLoop]: Abstraction has 2048 states and 2772 transitions. [2020-10-27 05:38:10,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:38:10,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 2772 transitions. [2020-10-27 05:38:10,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 05:38:10,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:38:10,532 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] [2020-10-27 05:38:10,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:38:10,533 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:38:10,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:38:10,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1370995832, now seen corresponding path program 1 times [2020-10-27 05:38:10,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:38:10,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437402233] [2020-10-27 05:38:10,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:38:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:10,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:10,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:10,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:11,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:11,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:12,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:12,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:14,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:14,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:15,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:15,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:15,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 05:38:15,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:38:15,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 05:38:15,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:38:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:38:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 05:38:15,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:38:16,577 WARN L193 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:38:16,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:38:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:16,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:16,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:16,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:38:16,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:38:16,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 05:38:16,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:16,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:38:16,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:38:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:38:16,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:38:16,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437402233] [2020-10-27 05:38:16,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:38:16,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:38:16,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282794401] [2020-10-27 05:38:16,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:38:16,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:38:16,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:38:16,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:38:16,777 INFO L87 Difference]: Start difference. First operand 2048 states and 2772 transitions. Second operand 9 states. [2020-10-27 05:38:17,873 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 351 [2020-10-27 05:38:24,967 WARN L193 SmtUtils]: Spent 931.00 ms on a formula simplification that was a NOOP. DAG size: 349 [2020-10-27 05:38:26,427 WARN L193 SmtUtils]: Spent 922.00 ms on a formula simplification that was a NOOP. DAG size: 347 [2020-10-27 05:38:28,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:38:28,343 INFO L93 Difference]: Finished difference Result 3085 states and 4316 transitions. [2020-10-27 05:38:28,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 05:38:28,343 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-10-27 05:38:28,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:38:28,358 INFO L225 Difference]: With dead ends: 3085 [2020-10-27 05:38:28,358 INFO L226 Difference]: Without dead ends: 2720 [2020-10-27 05:38:28,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:38:28,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2020-10-27 05:38:28,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 1328. [2020-10-27 05:38:28,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1328 states. [2020-10-27 05:38:28,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1765 transitions. [2020-10-27 05:38:28,466 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1765 transitions. Word has length 57 [2020-10-27 05:38:28,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:38:28,466 INFO L481 AbstractCegarLoop]: Abstraction has 1328 states and 1765 transitions. [2020-10-27 05:38:28,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:38:28,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1765 transitions. [2020-10-27 05:38:28,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 05:38:28,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:38:28,471 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] [2020-10-27 05:38:28,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:38:28,471 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:38:28,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:38:28,472 INFO L82 PathProgramCache]: Analyzing trace with hash -636135544, now seen corresponding path program 1 times [2020-10-27 05:38:28,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:38:28,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342686910] [2020-10-27 05:38:28,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:38:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:28,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:28,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:28,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:28,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:29,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:30,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:30,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:32,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:32,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:32,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:33,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:33,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:33,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 05:38:33,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:38:33,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:38:33,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:33,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:38:33,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:38:33,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 05:38:33,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:34,458 WARN L193 SmtUtils]: Spent 773.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:38:34,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:38:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:34,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:34,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:34,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:38:34,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:38:34,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 05:38:34,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:34,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:38:34,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:38:34,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:38:34,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:34,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:38:34,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342686910] [2020-10-27 05:38:34,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:38:34,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:38:34,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709446188] [2020-10-27 05:38:34,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:38:34,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:38:34,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:38:34,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:38:34,583 INFO L87 Difference]: Start difference. First operand 1328 states and 1765 transitions. Second operand 10 states. [2020-10-27 05:38:35,657 WARN L193 SmtUtils]: Spent 988.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 05:38:41,834 WARN L193 SmtUtils]: Spent 919.00 ms on a formula simplification that was a NOOP. DAG size: 348 [2020-10-27 05:38:43,123 WARN L193 SmtUtils]: Spent 872.00 ms on a formula simplification that was a NOOP. DAG size: 344 [2020-10-27 05:38:46,684 WARN L193 SmtUtils]: Spent 918.00 ms on a formula simplification that was a NOOP. DAG size: 350 [2020-10-27 05:38:47,726 WARN L193 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:38:48,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:38:48,409 INFO L93 Difference]: Finished difference Result 3320 states and 4649 transitions. [2020-10-27 05:38:48,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 05:38:48,411 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-27 05:38:48,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:38:48,422 INFO L225 Difference]: With dead ends: 3320 [2020-10-27 05:38:48,423 INFO L226 Difference]: Without dead ends: 2556 [2020-10-27 05:38:48,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=208, Invalid=662, Unknown=0, NotChecked=0, Total=870 [2020-10-27 05:38:48,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2020-10-27 05:38:48,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 1765. [2020-10-27 05:38:48,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1765 states. [2020-10-27 05:38:48,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 2363 transitions. [2020-10-27 05:38:48,581 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 2363 transitions. Word has length 57 [2020-10-27 05:38:48,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:38:48,581 INFO L481 AbstractCegarLoop]: Abstraction has 1765 states and 2363 transitions. [2020-10-27 05:38:48,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:38:48,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 2363 transitions. [2020-10-27 05:38:48,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 05:38:48,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:38:48,586 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] [2020-10-27 05:38:48,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:38:48,586 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:38:48,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:38:48,587 INFO L82 PathProgramCache]: Analyzing trace with hash -468120866, now seen corresponding path program 1 times [2020-10-27 05:38:48,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:38:48,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310404876] [2020-10-27 05:38:48,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:38:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:48,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:48,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:48,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:50,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:50,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:50,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:51,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:51,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:51,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:52,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:53,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:53,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 05:38:53,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:38:53,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 05:38:53,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 05:38:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:38:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 05:38:53,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:54,731 WARN L193 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:38:54,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:38:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:54,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:54,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:54,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:38:54,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:38:54,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 05:38:54,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:54,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:38:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:38:54,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:38:54,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 05:38:54,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:38:54,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310404876] [2020-10-27 05:38:54,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:38:54,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 05:38:54,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651982262] [2020-10-27 05:38:54,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 05:38:54,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:38:54,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 05:38:54,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:38:54,849 INFO L87 Difference]: Start difference. First operand 1765 states and 2363 transitions. Second operand 12 states. [2020-10-27 05:38:56,962 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 358 DAG size of output: 356 [2020-10-27 05:39:03,259 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 361 DAG size of output: 359 [2020-10-27 05:39:05,187 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 361 DAG size of output: 360 [2020-10-27 05:39:10,158 WARN L193 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 356 DAG size of output: 354 [2020-10-27 05:39:12,102 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 356 DAG size of output: 355 [2020-10-27 05:39:13,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:39:13,513 INFO L93 Difference]: Finished difference Result 5906 states and 8492 transitions. [2020-10-27 05:39:13,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 05:39:13,514 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-10-27 05:39:13,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:39:13,537 INFO L225 Difference]: With dead ends: 5906 [2020-10-27 05:39:13,538 INFO L226 Difference]: Without dead ends: 4731 [2020-10-27 05:39:13,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=512, Invalid=1840, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 05:39:13,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2020-10-27 05:39:13,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 1869. [2020-10-27 05:39:13,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1869 states. [2020-10-27 05:39:13,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2545 transitions. [2020-10-27 05:39:13,805 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2545 transitions. Word has length 57 [2020-10-27 05:39:13,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:39:13,806 INFO L481 AbstractCegarLoop]: Abstraction has 1869 states and 2545 transitions. [2020-10-27 05:39:13,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 05:39:13,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2545 transitions. [2020-10-27 05:39:13,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 05:39:13,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:39:13,809 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] [2020-10-27 05:39:13,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:39:13,810 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:39:13,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:39:13,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1315936740, now seen corresponding path program 1 times [2020-10-27 05:39:13,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:39:13,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276132061] [2020-10-27 05:39:13,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:39:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:39:13,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:13,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:14,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:15,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:15,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:18,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:39:18,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 05:39:18,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:39:18,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:39:18,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:39:18,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:39:18,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:39:18,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 05:39:18,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:39:19,895 WARN L193 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:39:19,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:39:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:39:19,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:19,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:39:19,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:39:19,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:39:19,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:39:19,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:39:19,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:39:19,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:39:19,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:39:19,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:39:19,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:39:19,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276132061] [2020-10-27 05:39:19,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:39:19,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:39:19,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292903990] [2020-10-27 05:39:19,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:39:19,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:39:19,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:39:19,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:39:19,956 INFO L87 Difference]: Start difference. First operand 1869 states and 2545 transitions. Second operand 9 states. [2020-10-27 05:39:20,937 WARN L193 SmtUtils]: Spent 890.00 ms on a formula simplification that was a NOOP. DAG size: 347 [2020-10-27 05:39:24,663 WARN L193 SmtUtils]: Spent 863.00 ms on a formula simplification that was a NOOP. DAG size: 349 [2020-10-27 05:39:27,817 WARN L193 SmtUtils]: Spent 845.00 ms on a formula simplification that was a NOOP. DAG size: 351 [2020-10-27 05:39:29,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:39:29,388 INFO L93 Difference]: Finished difference Result 3721 states and 5390 transitions. [2020-10-27 05:39:29,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 05:39:29,389 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-27 05:39:29,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:39:29,405 INFO L225 Difference]: With dead ends: 3721 [2020-10-27 05:39:29,405 INFO L226 Difference]: Without dead ends: 3189 [2020-10-27 05:39:29,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-10-27 05:39:29,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2020-10-27 05:39:29,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 1780. [2020-10-27 05:39:29,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1780 states. [2020-10-27 05:39:29,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 2412 transitions. [2020-10-27 05:39:29,655 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 2412 transitions. Word has length 58 [2020-10-27 05:39:29,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:39:29,656 INFO L481 AbstractCegarLoop]: Abstraction has 1780 states and 2412 transitions. [2020-10-27 05:39:29,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:39:29,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 2412 transitions. [2020-10-27 05:39:29,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 05:39:29,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:39:29,660 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] [2020-10-27 05:39:29,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:39:29,660 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:39:29,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:39:29,661 INFO L82 PathProgramCache]: Analyzing trace with hash 153264034, now seen corresponding path program 1 times [2020-10-27 05:39:29,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:39:29,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757155192] [2020-10-27 05:39:29,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:39:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:39:29,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:29,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:29,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:30,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:30,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:34,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:39:34,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 05:39:34,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:39:34,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 05:39:34,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:39:34,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:39:34,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:39:34,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 05:39:34,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:39:35,745 WARN L193 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:39:35,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:39:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:39:35,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:35,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:39:35,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:39:35,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:39:35,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:39:35,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:39:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:39:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:39:35,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:39:35,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:39:35,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:39:35,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757155192] [2020-10-27 05:39:35,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:39:35,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:39:35,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920483332] [2020-10-27 05:39:35,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:39:35,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:39:35,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:39:35,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:39:35,793 INFO L87 Difference]: Start difference. First operand 1780 states and 2412 transitions. Second operand 8 states. [2020-10-27 05:39:36,693 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification that was a NOOP. DAG size: 347 [2020-10-27 05:39:41,389 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 356 DAG size of output: 353 [2020-10-27 05:39:42,320 WARN L193 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:39:42,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:39:42,857 INFO L93 Difference]: Finished difference Result 3304 states and 4727 transitions. [2020-10-27 05:39:42,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 05:39:42,858 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-27 05:39:42,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:39:42,867 INFO L225 Difference]: With dead ends: 3304 [2020-10-27 05:39:42,867 INFO L226 Difference]: Without dead ends: 2089 [2020-10-27 05:39:42,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-27 05:39:42,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2020-10-27 05:39:43,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 1215. [2020-10-27 05:39:43,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1215 states. [2020-10-27 05:39:43,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1647 transitions. [2020-10-27 05:39:43,035 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1647 transitions. Word has length 58 [2020-10-27 05:39:43,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:39:43,035 INFO L481 AbstractCegarLoop]: Abstraction has 1215 states and 1647 transitions. [2020-10-27 05:39:43,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:39:43,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1647 transitions. [2020-10-27 05:39:43,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 05:39:43,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:39:43,039 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] [2020-10-27 05:39:43,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:39:43,039 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:39:43,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:39:43,040 INFO L82 PathProgramCache]: Analyzing trace with hash -20380134, now seen corresponding path program 1 times [2020-10-27 05:39:43,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:39:43,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406272221] [2020-10-27 05:39:43,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:39:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:39:43,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:43,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:43,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:43,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:43,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:43,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:48,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:39:48,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 05:39:48,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:39:48,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:39:48,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:39:48,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:39:48,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:39:48,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 05:39:48,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:39:49,053 WARN L193 SmtUtils]: Spent 827.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:39:49,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:39:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:39:49,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:49,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:39:49,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:39:49,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:39:49,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 05:39:49,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:39:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:39:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:39:49,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:39:49,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:39:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:39:49,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406272221] [2020-10-27 05:39:49,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:39:49,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:39:49,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051591681] [2020-10-27 05:39:49,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:39:49,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:39:49,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:39:49,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:39:49,170 INFO L87 Difference]: Start difference. First operand 1215 states and 1647 transitions. Second operand 9 states. [2020-10-27 05:39:50,201 WARN L193 SmtUtils]: Spent 945.00 ms on a formula simplification that was a NOOP. DAG size: 351 [2020-10-27 05:39:54,128 WARN L193 SmtUtils]: Spent 857.00 ms on a formula simplification that was a NOOP. DAG size: 349 [2020-10-27 05:39:55,034 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 347 [2020-10-27 05:39:55,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:39:55,535 INFO L93 Difference]: Finished difference Result 1867 states and 2665 transitions. [2020-10-27 05:39:55,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 05:39:55,536 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-10-27 05:39:55,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:39:55,541 INFO L225 Difference]: With dead ends: 1867 [2020-10-27 05:39:55,542 INFO L226 Difference]: Without dead ends: 1425 [2020-10-27 05:39:55,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:39:55,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2020-10-27 05:39:55,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1204. [2020-10-27 05:39:55,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1204 states. [2020-10-27 05:39:55,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1635 transitions. [2020-10-27 05:39:55,701 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1635 transitions. Word has length 65 [2020-10-27 05:39:55,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:39:55,701 INFO L481 AbstractCegarLoop]: Abstraction has 1204 states and 1635 transitions. [2020-10-27 05:39:55,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:39:55,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1635 transitions. [2020-10-27 05:39:55,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 05:39:55,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:39:55,704 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] [2020-10-27 05:39:55,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:39:55,704 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:39:55,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:39:55,705 INFO L82 PathProgramCache]: Analyzing trace with hash 795589204, now seen corresponding path program 1 times [2020-10-27 05:39:55,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:39:55,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496828314] [2020-10-27 05:39:55,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:39:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:39:55,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:55,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:55,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:55,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:56,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:56,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:56,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:56,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:56,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:56,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:56,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:58,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:39:58,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 05:39:58,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:39:58,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2674 [2020-10-27 05:39:58,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:39:58,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:39:58,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 05:39:58,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 05:39:58,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:39:59,395 WARN L193 SmtUtils]: Spent 879.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:39:59,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:39:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:39:59,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:59,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:39:59,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:39:59,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:39:59,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 05:39:59,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:39:59,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:39:59,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:39:59,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:39:59,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:39:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:39:59,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496828314] [2020-10-27 05:39:59,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:39:59,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:39:59,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658331955] [2020-10-27 05:39:59,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:39:59,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:39:59,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:39:59,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:39:59,456 INFO L87 Difference]: Start difference. First operand 1204 states and 1635 transitions. Second operand 6 states. [2020-10-27 05:40:02,962 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:40:03,849 WARN L193 SmtUtils]: Spent 834.00 ms on a formula simplification that was a NOOP. DAG size: 349 [2020-10-27 05:40:04,736 WARN L193 SmtUtils]: Spent 849.00 ms on a formula simplification that was a NOOP. DAG size: 351 [2020-10-27 05:40:04,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:40:04,965 INFO L93 Difference]: Finished difference Result 2442 states and 3526 transitions. [2020-10-27 05:40:04,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:40:04,966 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-10-27 05:40:04,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:40:04,972 INFO L225 Difference]: With dead ends: 2442 [2020-10-27 05:40:04,972 INFO L226 Difference]: Without dead ends: 1864 [2020-10-27 05:40:04,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:40:04,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2020-10-27 05:40:05,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1858. [2020-10-27 05:40:05,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1858 states. [2020-10-27 05:40:05,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2644 transitions. [2020-10-27 05:40:05,305 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2644 transitions. Word has length 65 [2020-10-27 05:40:05,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:40:05,306 INFO L481 AbstractCegarLoop]: Abstraction has 1858 states and 2644 transitions. [2020-10-27 05:40:05,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:40:05,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2644 transitions. [2020-10-27 05:40:05,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 05:40:05,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:40:05,309 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] [2020-10-27 05:40:05,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:40:05,309 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:40:05,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:40:05,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1118554711, now seen corresponding path program 1 times [2020-10-27 05:40:05,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:40:05,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498364610] [2020-10-27 05:40:05,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:40:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:40:05,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:05,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:05,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:05,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:05,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:05,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:06,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:06,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:06,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:10,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:40:10,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 05:40:10,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:40:10,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 05:40:10,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:40:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:40:10,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:40:10,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 05:40:10,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:40:11,383 WARN L193 SmtUtils]: Spent 881.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:40:11,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:40:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:40:11,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:11,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:40:11,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:40:11,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:40:11,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 05:40:11,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:40:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:40:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:40:11,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:40:11,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:40:11,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:40:11,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498364610] [2020-10-27 05:40:11,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:40:11,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:40:11,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043155096] [2020-10-27 05:40:11,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:40:11,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:40:11,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:40:11,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:40:11,459 INFO L87 Difference]: Start difference. First operand 1858 states and 2644 transitions. Second operand 10 states. [2020-10-27 05:40:12,489 WARN L193 SmtUtils]: Spent 942.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 05:40:16,884 WARN L193 SmtUtils]: Spent 837.00 ms on a formula simplification that was a NOOP. DAG size: 348 [2020-10-27 05:40:17,848 WARN L193 SmtUtils]: Spent 871.00 ms on a formula simplification that was a NOOP. DAG size: 350 [2020-10-27 05:40:18,810 WARN L193 SmtUtils]: Spent 794.00 ms on a formula simplification that was a NOOP. DAG size: 344 [2020-10-27 05:40:19,692 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:40:21,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:40:21,237 INFO L93 Difference]: Finished difference Result 5474 states and 8079 transitions. [2020-10-27 05:40:21,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 05:40:21,238 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-10-27 05:40:21,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:40:21,255 INFO L225 Difference]: With dead ends: 5474 [2020-10-27 05:40:21,255 INFO L226 Difference]: Without dead ends: 5043 [2020-10-27 05:40:21,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=208, Invalid=662, Unknown=0, NotChecked=0, Total=870 [2020-10-27 05:40:21,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5043 states. [2020-10-27 05:40:21,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5043 to 1858. [2020-10-27 05:40:21,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1858 states. [2020-10-27 05:40:21,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2642 transitions. [2020-10-27 05:40:21,555 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2642 transitions. Word has length 66 [2020-10-27 05:40:21,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:40:21,556 INFO L481 AbstractCegarLoop]: Abstraction has 1858 states and 2642 transitions. [2020-10-27 05:40:21,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:40:21,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2642 transitions. [2020-10-27 05:40:21,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 05:40:21,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:40:21,558 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] [2020-10-27 05:40:21,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:40:21,559 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:40:21,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:40:21,559 INFO L82 PathProgramCache]: Analyzing trace with hash -29787076, now seen corresponding path program 1 times [2020-10-27 05:40:21,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:40:21,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180237289] [2020-10-27 05:40:21,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:40:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:40:21,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:21,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:21,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:21,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:22,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:40:22,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 05:40:22,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:40:22,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-10-27 05:40:22,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:40:22,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:40:22,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 05:40:22,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 05:40:22,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:40:23,147 WARN L193 SmtUtils]: Spent 887.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:40:23,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:40:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:40:23,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:23,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:40:23,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:40:23,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:40:23,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:40:23,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:40:23,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:40:23,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:40:23,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:40:23,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:40:23,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:40:23,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180237289] [2020-10-27 05:40:23,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:40:23,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:40:23,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029321136] [2020-10-27 05:40:23,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:40:23,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:40:23,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:40:23,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:40:23,201 INFO L87 Difference]: Start difference. First operand 1858 states and 2642 transitions. Second operand 6 states. [2020-10-27 05:40:24,182 WARN L193 SmtUtils]: Spent 894.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:40:27,571 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 344 [2020-10-27 05:40:28,460 WARN L193 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2020-10-27 05:40:28,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:40:28,881 INFO L93 Difference]: Finished difference Result 5188 states and 7820 transitions. [2020-10-27 05:40:28,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:40:28,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-27 05:40:28,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:40:28,890 INFO L225 Difference]: With dead ends: 5188 [2020-10-27 05:40:28,891 INFO L226 Difference]: Without dead ends: 4105 [2020-10-27 05:40:28,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:40:28,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4105 states. [2020-10-27 05:40:29,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4105 to 2940. [2020-10-27 05:40:29,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2940 states. [2020-10-27 05:40:29,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 4284 transitions. [2020-10-27 05:40:29,329 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 4284 transitions. Word has length 66 [2020-10-27 05:40:29,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:40:29,330 INFO L481 AbstractCegarLoop]: Abstraction has 2940 states and 4284 transitions. [2020-10-27 05:40:29,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:40:29,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 4284 transitions. [2020-10-27 05:40:29,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 05:40:29,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:40:29,334 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] [2020-10-27 05:40:29,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:40:29,334 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:40:29,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:40:29,334 INFO L82 PathProgramCache]: Analyzing trace with hash -969719796, now seen corresponding path program 1 times [2020-10-27 05:40:29,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:40:29,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90549559] [2020-10-27 05:40:29,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:40:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:40:29,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:29,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:29,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:40:29,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 05:40:29,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 05:40:29,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-27 05:40:29,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:40:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:40:29,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-27 05:40:29,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 05:40:29,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:40:30,582 WARN L193 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:40:30,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:40:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:40:30,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:30,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:40:30,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:40:30,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:40:30,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:40:30,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:40:30,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:40:30,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:40:30,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:40:30,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:40:30,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:40:30,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90549559] [2020-10-27 05:40:30,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:40:30,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:40:30,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141061624] [2020-10-27 05:40:30,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:40:30,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:40:30,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:40:30,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:40:30,637 INFO L87 Difference]: Start difference. First operand 2940 states and 4284 transitions. Second operand 4 states. [2020-10-27 05:40:31,551 WARN L193 SmtUtils]: Spent 863.00 ms on a formula simplification that was a NOOP. DAG size: 348 [2020-10-27 05:40:34,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:40:34,616 INFO L93 Difference]: Finished difference Result 7090 states and 10656 transitions. [2020-10-27 05:40:34,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:40:34,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-27 05:40:34,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:40:34,625 INFO L225 Difference]: With dead ends: 7090 [2020-10-27 05:40:34,625 INFO L226 Difference]: Without dead ends: 4927 [2020-10-27 05:40:34,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:40:34,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4927 states. [2020-10-27 05:40:35,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4927 to 4668. [2020-10-27 05:40:35,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4668 states. [2020-10-27 05:40:35,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4668 states to 4668 states and 6916 transitions. [2020-10-27 05:40:35,396 INFO L78 Accepts]: Start accepts. Automaton has 4668 states and 6916 transitions. Word has length 67 [2020-10-27 05:40:35,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:40:35,396 INFO L481 AbstractCegarLoop]: Abstraction has 4668 states and 6916 transitions. [2020-10-27 05:40:35,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:40:35,396 INFO L276 IsEmpty]: Start isEmpty. Operand 4668 states and 6916 transitions. [2020-10-27 05:40:35,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 05:40:35,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:40:35,399 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] [2020-10-27 05:40:35,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:40:35,399 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:40:35,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:40:35,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1921539806, now seen corresponding path program 1 times [2020-10-27 05:40:35,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:40:35,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70757323] [2020-10-27 05:40:35,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:40:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:40:35,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:35,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:35,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:35,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:35,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:37,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:37,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:38,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking...