/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.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:17:53,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:17:53,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:17:53,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:17:53,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:17:53,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:17:53,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:17:53,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:17:53,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:17:53,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:17:53,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:17:53,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:17:53,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:17:53,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:17:53,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:17:53,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:17:53,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:17:53,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:17:53,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:17:53,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:17:53,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:17:53,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:17:53,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:17:53,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:17:53,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:17:53,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:17:53,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:17:53,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:17:53,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:17:53,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:17:53,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:17:53,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:17:53,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:17:53,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:17:53,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:17:53,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:17:53,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:17:53,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:17:53,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:17:53,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:17:53,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:17:53,225 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 05:17:53,275 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:17:53,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:17:53,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:17:53,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:17:53,278 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:17:53,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:17:53,280 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:17:53,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:17:53,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:17:53,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:17:53,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:17:53,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:17:53,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:17:53,283 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:17:53,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:17:53,283 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:17:53,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:17:53,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:17:53,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:17:53,284 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:17:53,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:17:53,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:17:53,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:17:53,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:17:53,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:17:53,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:17:53,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:17:53,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:17:53,287 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:17:53,287 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:17:53,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:17:53,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:17:53,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:17:53,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:17:53,791 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:17:53,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-27 05:17:53,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77216792a/f2ca6cefb34044d5b17e0099933fcd8f/FLAG9b14742a7 [2020-10-27 05:17:54,666 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:17:54,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-27 05:17:54,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77216792a/f2ca6cefb34044d5b17e0099933fcd8f/FLAG9b14742a7 [2020-10-27 05:17:54,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77216792a/f2ca6cefb34044d5b17e0099933fcd8f [2020-10-27 05:17:54,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:17:54,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:17:54,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:17:54,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:17:54,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:17:54,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:17:54" (1/1) ... [2020-10-27 05:17:54,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7830de24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:17:54, skipping insertion in model container [2020-10-27 05:17:54,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:17:54" (1/1) ... [2020-10-27 05:17:54,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:17:55,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:17:55,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:17:55,513 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:17:55,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:17:55,710 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:17:55,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:17:55 WrapperNode [2020-10-27 05:17:55,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:17:55,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:17:55,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:17:55,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:17:55,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:17:55" (1/1) ... [2020-10-27 05:17:55,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:17:55" (1/1) ... [2020-10-27 05:17:55,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:17:55" (1/1) ... [2020-10-27 05:17:55,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:17:55" (1/1) ... [2020-10-27 05:17:55,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:17:55" (1/1) ... [2020-10-27 05:17:55,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:17:55" (1/1) ... [2020-10-27 05:17:55,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:17:55" (1/1) ... [2020-10-27 05:17:55,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:17:55,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:17:55,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:17:55,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:17:55,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:17:55" (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 05:17:55,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:17:55,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:17:55,911 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:17:55,912 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:17:55,912 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:17:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:17:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:17:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:17:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:17:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:17:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:17:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:17:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:17:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:17:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:17:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:17:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:17:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:17:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:17:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:17:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:17:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:17:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:17:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:17:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:17:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:17:55,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:17:55,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:17:55,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:17:57,430 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:17:57,430 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:17:57,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:17:57 BoogieIcfgContainer [2020-10-27 05:17:57,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:17:57,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:17:57,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:17:57,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:17:57,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:17:54" (1/3) ... [2020-10-27 05:17:57,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8b178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:17:57, skipping insertion in model container [2020-10-27 05:17:57,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:17:55" (2/3) ... [2020-10-27 05:17:57,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8b178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:17:57, skipping insertion in model container [2020-10-27 05:17:57,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:17:57" (3/3) ... [2020-10-27 05:17:57,442 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-27 05:17:57,455 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:17:57,461 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:17:57,475 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:17:57,505 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:17:57,505 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:17:57,506 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:17:57,506 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:17:57,506 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:17:57,506 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:17:57,506 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:17:57,506 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:17:57,530 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-27 05:17:57,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 05:17:57,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:17:57,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:17:57,545 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:17:57,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:17:57,551 INFO L82 PathProgramCache]: Analyzing trace with hash 685283961, now seen corresponding path program 1 times [2020-10-27 05:17:57,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:17:57,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817752967] [2020-10-27 05:17:57,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:17:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:17:57,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:17:58,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:17:58,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:17:58,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:17:58,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:17:58,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:17:58,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:00,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:00,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:02,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:18:02,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 05:18:02,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:18:02,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 05:18:02,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:18:02,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:18:02,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 05:18:02,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 05:18:02,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 05:18:03,569 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:18:03,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:18:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:18:03,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:03,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:18:03,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:18:03,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:18:03,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:18:03,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:18:03,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:18:03,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:18:03,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:18:03,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:18:03,633 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 05:18:03,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817752967] [2020-10-27 05:18:03,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:18:03,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:18:03,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362582478] [2020-10-27 05:18:03,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:18:03,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:18:03,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:18:03,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:18:03,663 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 5 states. [2020-10-27 05:18:05,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:18:05,319 INFO L93 Difference]: Finished difference Result 412 states and 666 transitions. [2020-10-27 05:18:05,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:18:05,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-27 05:18:05,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:18:05,335 INFO L225 Difference]: With dead ends: 412 [2020-10-27 05:18:05,335 INFO L226 Difference]: Without dead ends: 217 [2020-10-27 05:18:05,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:18:05,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-27 05:18:05,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-10-27 05:18:05,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-27 05:18:05,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 322 transitions. [2020-10-27 05:18:05,416 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 322 transitions. Word has length 84 [2020-10-27 05:18:05,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:18:05,417 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 322 transitions. [2020-10-27 05:18:05,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:18:05,417 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 322 transitions. [2020-10-27 05:18:05,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 05:18:05,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:18:05,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:18:05,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:18:05,424 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:18:05,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:18:05,425 INFO L82 PathProgramCache]: Analyzing trace with hash 414654676, now seen corresponding path program 1 times [2020-10-27 05:18:05,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:18:05,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251380873] [2020-10-27 05:18:05,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:18:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:18:05,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:05,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:05,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:05,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:05,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:05,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:05,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:06,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:06,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:09,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:09,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:10,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:18:10,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 05:18:10,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:18:10,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 05:18:10,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:18:10,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:18:10,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:18:10,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 05:18:10,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:18:11,100 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:18:11,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:18:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:18:11,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:11,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:18:11,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:18:11,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:18:11,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 05:18:11,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:18:11,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:18:11,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:18:11,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:18:11,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:18:11,163 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 05:18:11,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251380873] [2020-10-27 05:18:11,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:18:11,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:18:11,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326486264] [2020-10-27 05:18:11,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:18:11,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:18:11,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:18:11,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:18:11,168 INFO L87 Difference]: Start difference. First operand 217 states and 322 transitions. Second operand 8 states. [2020-10-27 05:18:11,820 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 05:18:17,098 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 05:18:17,679 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 05:18:18,298 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 05:18:18,906 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:18:19,586 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 05:18:20,132 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 05:18:20,696 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:18:21,286 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 05:18:21,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:18:21,315 INFO L93 Difference]: Finished difference Result 1580 states and 2478 transitions. [2020-10-27 05:18:21,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 05:18:21,317 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 114 [2020-10-27 05:18:21,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:18:21,332 INFO L225 Difference]: With dead ends: 1580 [2020-10-27 05:18:21,332 INFO L226 Difference]: Without dead ends: 1458 [2020-10-27 05:18:21,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-10-27 05:18:21,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2020-10-27 05:18:21,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 383. [2020-10-27 05:18:21,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-10-27 05:18:21,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 582 transitions. [2020-10-27 05:18:21,431 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 582 transitions. Word has length 114 [2020-10-27 05:18:21,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:18:21,431 INFO L481 AbstractCegarLoop]: Abstraction has 383 states and 582 transitions. [2020-10-27 05:18:21,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:18:21,432 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 582 transitions. [2020-10-27 05:18:21,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 05:18:21,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:18:21,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:18:21,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:18:21,439 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:18:21,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:18:21,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1273194649, now seen corresponding path program 1 times [2020-10-27 05:18:21,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:18:21,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864167493] [2020-10-27 05:18:21,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:18:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:18:21,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:21,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:21,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:21,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:21,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:21,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:21,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:21,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:22,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:26,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:18:26,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 05:18:26,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:18:26,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 05:18:26,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:18:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:18:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:18:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 05:18:26,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:18:27,059 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:18:27,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:18:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:18:27,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:27,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:18:27,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:18:27,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:18:27,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 05:18:27,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:18:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:18:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:18:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:18:27,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:18:27,204 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 05:18:27,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864167493] [2020-10-27 05:18:27,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:18:27,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:18:27,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453750234] [2020-10-27 05:18:27,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:18:27,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:18:27,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:18:27,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:18:27,210 INFO L87 Difference]: Start difference. First operand 383 states and 582 transitions. Second operand 7 states. [2020-10-27 05:18:27,751 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 05:18:29,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:18:29,378 INFO L93 Difference]: Finished difference Result 872 states and 1354 transitions. [2020-10-27 05:18:29,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:18:29,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-27 05:18:29,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:18:29,386 INFO L225 Difference]: With dead ends: 872 [2020-10-27 05:18:29,387 INFO L226 Difference]: Without dead ends: 535 [2020-10-27 05:18:29,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:18:29,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-10-27 05:18:29,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 371. [2020-10-27 05:18:29,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-10-27 05:18:29,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 561 transitions. [2020-10-27 05:18:29,457 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 561 transitions. Word has length 116 [2020-10-27 05:18:29,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:18:29,462 INFO L481 AbstractCegarLoop]: Abstraction has 371 states and 561 transitions. [2020-10-27 05:18:29,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:18:29,462 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 561 transitions. [2020-10-27 05:18:29,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 05:18:29,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:18:29,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:18:29,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:18:29,469 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:18:29,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:18:29,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1600673363, now seen corresponding path program 1 times [2020-10-27 05:18:29,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:18:29,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424377308] [2020-10-27 05:18:29,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:18:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:18:29,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:29,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:29,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:29,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:29,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:29,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:29,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:30,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:31,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:31,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:34,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:18:34,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 05:18:34,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:18:34,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:18:34,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:18:34,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:18:34,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:18:34,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 05:18:34,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:18:35,177 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:18:35,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:18:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:18:35,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:35,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:18:35,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:18:35,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:18:35,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:18:35,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:18:35,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:18:35,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:18:35,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:18:35,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:18:35,282 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 05:18:35,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424377308] [2020-10-27 05:18:35,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:18:35,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:18:35,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404107998] [2020-10-27 05:18:35,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:18:35,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:18:35,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:18:35,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:18:35,288 INFO L87 Difference]: Start difference. First operand 371 states and 561 transitions. Second operand 8 states. [2020-10-27 05:18:35,971 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 05:18:40,151 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 05:18:40,737 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:18:41,288 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 05:18:41,875 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 05:18:42,421 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 05:18:42,952 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 05:18:43,489 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 05:18:43,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:18:43,503 INFO L93 Difference]: Finished difference Result 1912 states and 2970 transitions. [2020-10-27 05:18:43,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 05:18:43,506 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 116 [2020-10-27 05:18:43,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:18:43,516 INFO L225 Difference]: With dead ends: 1912 [2020-10-27 05:18:43,516 INFO L226 Difference]: Without dead ends: 1727 [2020-10-27 05:18:43,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2020-10-27 05:18:43,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2020-10-27 05:18:43,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 749. [2020-10-27 05:18:43,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-10-27 05:18:43,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1153 transitions. [2020-10-27 05:18:43,589 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1153 transitions. Word has length 116 [2020-10-27 05:18:43,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:18:43,590 INFO L481 AbstractCegarLoop]: Abstraction has 749 states and 1153 transitions. [2020-10-27 05:18:43,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:18:43,590 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1153 transitions. [2020-10-27 05:18:43,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 05:18:43,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:18:43,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:18:43,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:18:43,593 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:18:43,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:18:43,594 INFO L82 PathProgramCache]: Analyzing trace with hash 489792371, now seen corresponding path program 1 times [2020-10-27 05:18:43,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:18:43,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687919838] [2020-10-27 05:18:43,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:18:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:18:43,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:43,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:43,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:43,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:43,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:43,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:43,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:43,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:44,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:44,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:48,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:18:48,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 05:18:48,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:18:48,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:18:48,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:18:48,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:18:48,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:18:48,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 05:18:48,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:18:49,243 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:18:49,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:18:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:18:49,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:49,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:18:49,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:18:49,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:18:49,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 05:18:49,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:18:49,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:18:49,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:18:49,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:18:49,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:18:49,323 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 05:18:49,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687919838] [2020-10-27 05:18:49,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:18:49,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:18:49,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491936042] [2020-10-27 05:18:49,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:18:49,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:18:49,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:18:49,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:18:49,326 INFO L87 Difference]: Start difference. First operand 749 states and 1153 transitions. Second operand 7 states. [2020-10-27 05:18:49,874 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:18:51,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:18:51,623 INFO L93 Difference]: Finished difference Result 1330 states and 2064 transitions. [2020-10-27 05:18:51,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:18:51,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-27 05:18:51,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:18:51,630 INFO L225 Difference]: With dead ends: 1330 [2020-10-27 05:18:51,630 INFO L226 Difference]: Without dead ends: 949 [2020-10-27 05:18:51,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:18:51,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2020-10-27 05:18:51,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 739. [2020-10-27 05:18:51,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-10-27 05:18:51,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1135 transitions. [2020-10-27 05:18:51,714 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1135 transitions. Word has length 116 [2020-10-27 05:18:51,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:18:51,714 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 1135 transitions. [2020-10-27 05:18:51,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:18:51,715 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1135 transitions. [2020-10-27 05:18:51,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 05:18:51,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:18:51,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:18:51,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:18:51,718 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:18:51,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:18:51,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1881518721, now seen corresponding path program 1 times [2020-10-27 05:18:51,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:18:51,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499311653] [2020-10-27 05:18:51,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:18:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:18:51,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:51,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:51,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:51,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:51,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:51,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:52,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:52,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:52,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:52,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:54,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:54,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:56,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:18:56,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 05:18:56,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:18:56,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 05:18:56,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:18:56,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:18:56,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:18:56,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 05:18:56,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:18:57,399 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:18:57,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:18:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:18:57,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:57,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:18:57,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:18:57,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:18:57,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 05:18:57,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:18:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:18:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:18:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:18:57,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:18:57,492 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 05:18:57,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499311653] [2020-10-27 05:18:57,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:18:57,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:18:57,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953306949] [2020-10-27 05:18:57,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:18:57,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:18:57,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:18:57,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:18:57,494 INFO L87 Difference]: Start difference. First operand 739 states and 1135 transitions. Second operand 7 states. [2020-10-27 05:18:58,044 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 05:18:59,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:18:59,659 INFO L93 Difference]: Finished difference Result 1362 states and 2105 transitions. [2020-10-27 05:18:59,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:18:59,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-27 05:18:59,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:18:59,665 INFO L225 Difference]: With dead ends: 1362 [2020-10-27 05:18:59,665 INFO L226 Difference]: Without dead ends: 743 [2020-10-27 05:18:59,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:18:59,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2020-10-27 05:18:59,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 733. [2020-10-27 05:18:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-10-27 05:18:59,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1120 transitions. [2020-10-27 05:18:59,739 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1120 transitions. Word has length 116 [2020-10-27 05:18:59,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:18:59,739 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 1120 transitions. [2020-10-27 05:18:59,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:18:59,740 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1120 transitions. [2020-10-27 05:18:59,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 05:18:59,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:18:59,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:18:59,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:18:59,743 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:18:59,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:18:59,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1713931449, now seen corresponding path program 1 times [2020-10-27 05:18:59,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:18:59,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271841382] [2020-10-27 05:18:59,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:18:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:18:59,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:59,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:59,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:59,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:59,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:59,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:18:59,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:00,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:00,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:00,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:03,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:03,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:04,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:04,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 05:19:04,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:19:04,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 05:19:04,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:04,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:19:04,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:19:04,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 05:19:04,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:19:05,312 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:19:05,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:19:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:05,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:05,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:05,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:19:05,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:19:05,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 05:19:05,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:05,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:19:05,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:19:05,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:19:05,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:19:05,360 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 05:19:05,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271841382] [2020-10-27 05:19:05,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:19:05,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:19:05,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461299515] [2020-10-27 05:19:05,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:19:05,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:19:05,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:19:05,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:19:05,363 INFO L87 Difference]: Start difference. First operand 733 states and 1120 transitions. Second operand 7 states. [2020-10-27 05:19:05,933 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:19:07,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:19:07,430 INFO L93 Difference]: Finished difference Result 1052 states and 1617 transitions. [2020-10-27 05:19:07,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:19:07,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-27 05:19:07,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:19:07,434 INFO L225 Difference]: With dead ends: 1052 [2020-10-27 05:19:07,435 INFO L226 Difference]: Without dead ends: 683 [2020-10-27 05:19:07,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:19:07,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-10-27 05:19:07,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 595. [2020-10-27 05:19:07,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-10-27 05:19:07,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 903 transitions. [2020-10-27 05:19:07,501 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 903 transitions. Word has length 116 [2020-10-27 05:19:07,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:19:07,501 INFO L481 AbstractCegarLoop]: Abstraction has 595 states and 903 transitions. [2020-10-27 05:19:07,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:19:07,501 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 903 transitions. [2020-10-27 05:19:07,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 05:19:07,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:19:07,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:19:07,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:19:07,504 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:19:07,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:19:07,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1271067659, now seen corresponding path program 1 times [2020-10-27 05:19:07,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:19:07,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489486889] [2020-10-27 05:19:07,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:19:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:07,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:07,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:07,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:07,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:07,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:07,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:07,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:07,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:08,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:08,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:08,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:08,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:12,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:12,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 05:19:12,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:19:12,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 05:19:12,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:12,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:19:12,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:19:12,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 05:19:12,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:19:13,142 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:19:13,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:19:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:13,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:13,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:13,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:19:13,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:19:13,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:19:13,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:19:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:19:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:19:13,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:19:13,239 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 05:19:13,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489486889] [2020-10-27 05:19:13,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:19:13,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:19:13,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375925763] [2020-10-27 05:19:13,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:19:13,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:19:13,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:19:13,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:19:13,246 INFO L87 Difference]: Start difference. First operand 595 states and 903 transitions. Second operand 8 states. [2020-10-27 05:19:13,831 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 05:19:16,864 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 05:19:17,398 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 05:19:17,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:19:17,429 INFO L93 Difference]: Finished difference Result 2994 states and 4654 transitions. [2020-10-27 05:19:17,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:19:17,435 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2020-10-27 05:19:17,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:19:17,449 INFO L225 Difference]: With dead ends: 2994 [2020-10-27 05:19:17,449 INFO L226 Difference]: Without dead ends: 2508 [2020-10-27 05:19:17,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:19:17,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2020-10-27 05:19:17,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 678. [2020-10-27 05:19:17,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-10-27 05:19:17,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1015 transitions. [2020-10-27 05:19:17,558 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1015 transitions. Word has length 118 [2020-10-27 05:19:17,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:19:17,558 INFO L481 AbstractCegarLoop]: Abstraction has 678 states and 1015 transitions. [2020-10-27 05:19:17,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:19:17,559 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1015 transitions. [2020-10-27 05:19:17,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 05:19:17,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:19:17,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:19:17,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:19:17,562 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:19:17,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:19:17,562 INFO L82 PathProgramCache]: Analyzing trace with hash 613724347, now seen corresponding path program 1 times [2020-10-27 05:19:17,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:19:17,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618040266] [2020-10-27 05:19:17,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:19:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:17,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:17,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:17,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:17,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:17,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:17,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:17,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:17,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:18,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:18,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:22,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:22,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 05:19:22,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:19:22,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 05:19:22,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:19:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:19:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 05:19:22,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:19:23,267 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:19:23,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:19:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:23,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:23,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:23,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:19:23,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:19:23,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 05:19:23,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:23,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:19:23,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:19:23,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:19:23,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:19:23,315 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 05:19:23,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618040266] [2020-10-27 05:19:23,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:19:23,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:19:23,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899081671] [2020-10-27 05:19:23,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:19:23,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:19:23,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:19:23,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:19:23,317 INFO L87 Difference]: Start difference. First operand 678 states and 1015 transitions. Second operand 8 states. [2020-10-27 05:19:24,102 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 05:19:27,151 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 05:19:27,770 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:19:28,388 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:19:28,897 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 05:19:29,569 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 05:19:30,074 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:19:30,651 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 05:19:31,185 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 05:19:31,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:19:31,196 INFO L93 Difference]: Finished difference Result 2125 states and 3232 transitions. [2020-10-27 05:19:31,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 05:19:31,201 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2020-10-27 05:19:31,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:19:31,209 INFO L225 Difference]: With dead ends: 2125 [2020-10-27 05:19:31,209 INFO L226 Difference]: Without dead ends: 1628 [2020-10-27 05:19:31,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-10-27 05:19:31,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2020-10-27 05:19:31,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 678. [2020-10-27 05:19:31,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-10-27 05:19:31,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1010 transitions. [2020-10-27 05:19:31,315 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1010 transitions. Word has length 118 [2020-10-27 05:19:31,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:19:31,316 INFO L481 AbstractCegarLoop]: Abstraction has 678 states and 1010 transitions. [2020-10-27 05:19:31,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:19:31,316 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1010 transitions. [2020-10-27 05:19:31,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 05:19:31,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:19:31,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:19:31,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:19:31,319 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:19:31,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:19:31,320 INFO L82 PathProgramCache]: Analyzing trace with hash 702932284, now seen corresponding path program 1 times [2020-10-27 05:19:31,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:19:31,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037881600] [2020-10-27 05:19:31,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:19:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:31,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:31,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:31,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:31,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:31,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:31,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:31,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:31,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:31,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:33,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:33,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:33,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:33,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:36,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:36,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 05:19:36,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:19:36,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:19:36,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:36,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:19:36,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:19:36,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 05:19:36,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:19:36,918 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:19:36,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:19:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:36,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:36,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:36,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:19:36,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:19:36,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 05:19:36,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:36,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:19:36,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:19:36,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:19:36,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:19:37,016 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 05:19:37,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037881600] [2020-10-27 05:19:37,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:19:37,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:19:37,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196988881] [2020-10-27 05:19:37,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:19:37,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:19:37,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:19:37,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:19:37,020 INFO L87 Difference]: Start difference. First operand 678 states and 1010 transitions. Second operand 8 states. [2020-10-27 05:19:37,559 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 05:19:40,467 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 05:19:41,003 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 05:19:41,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:19:41,020 INFO L93 Difference]: Finished difference Result 3022 states and 4598 transitions. [2020-10-27 05:19:41,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:19:41,021 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2020-10-27 05:19:41,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:19:41,031 INFO L225 Difference]: With dead ends: 3022 [2020-10-27 05:19:41,031 INFO L226 Difference]: Without dead ends: 2426 [2020-10-27 05:19:41,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:19:41,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2020-10-27 05:19:41,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 893. [2020-10-27 05:19:41,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2020-10-27 05:19:41,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1313 transitions. [2020-10-27 05:19:41,186 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1313 transitions. Word has length 118 [2020-10-27 05:19:41,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:19:41,186 INFO L481 AbstractCegarLoop]: Abstraction has 893 states and 1313 transitions. [2020-10-27 05:19:41,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:19:41,186 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1313 transitions. [2020-10-27 05:19:41,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 05:19:41,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:19:41,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:19:41,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:19:41,190 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:19:41,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:19:41,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1828434306, now seen corresponding path program 1 times [2020-10-27 05:19:41,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:19:41,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193298457] [2020-10-27 05:19:41,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:19:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:41,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:41,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:41,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:41,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:41,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:41,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:41,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:41,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:41,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:42,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:42,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:42,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:42,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:46,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:46,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 05:19:46,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:19:46,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 05:19:46,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:46,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:19:46,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:19:46,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 05:19:46,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:19:46,930 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:19:46,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:19:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:46,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:46,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:46,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:19:46,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:19:46,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:19:46,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:46,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:19:46,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:19:46,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:19:46,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:19:47,026 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 05:19:47,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193298457] [2020-10-27 05:19:47,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:19:47,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:19:47,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499390626] [2020-10-27 05:19:47,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:19:47,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:19:47,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:19:47,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:19:47,029 INFO L87 Difference]: Start difference. First operand 893 states and 1313 transitions. Second operand 8 states. [2020-10-27 05:19:47,592 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 05:19:50,640 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 05:19:51,212 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 05:19:51,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:19:51,245 INFO L93 Difference]: Finished difference Result 3233 states and 4817 transitions. [2020-10-27 05:19:51,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:19:51,246 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2020-10-27 05:19:51,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:19:51,256 INFO L225 Difference]: With dead ends: 3233 [2020-10-27 05:19:51,256 INFO L226 Difference]: Without dead ends: 2476 [2020-10-27 05:19:51,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:19:51,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2020-10-27 05:19:51,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 1293. [2020-10-27 05:19:51,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1293 states. [2020-10-27 05:19:51,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1882 transitions. [2020-10-27 05:19:51,474 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1882 transitions. Word has length 118 [2020-10-27 05:19:51,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:19:51,474 INFO L481 AbstractCegarLoop]: Abstraction has 1293 states and 1882 transitions. [2020-10-27 05:19:51,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:19:51,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1882 transitions. [2020-10-27 05:19:51,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 05:19:51,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:19:51,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:19:51,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:19:51,479 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:19:51,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:19:51,480 INFO L82 PathProgramCache]: Analyzing trace with hash -29266582, now seen corresponding path program 1 times [2020-10-27 05:19:51,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:19:51,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850149532] [2020-10-27 05:19:51,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:19:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:51,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:51,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:51,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:51,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:51,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:51,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:51,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:51,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:52,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:52,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:52,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:56,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:56,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:56,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:56,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 05:19:56,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:19:56,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 05:19:56,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:56,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:19:56,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:19:56,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 05:19:56,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:19:57,183 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:19:57,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:19:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:57,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:57,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:57,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:19:57,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:19:57,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:19:57,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:57,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:19:57,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:19:57,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:19:57,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:19:57,244 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 05:19:57,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850149532] [2020-10-27 05:19:57,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:19:57,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:19:57,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132610061] [2020-10-27 05:19:57,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:19:57,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:19:57,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:19:57,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:19:57,246 INFO L87 Difference]: Start difference. First operand 1293 states and 1882 transitions. Second operand 8 states. [2020-10-27 05:19:57,786 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 05:20:00,675 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 05:20:01,217 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 05:20:01,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:20:01,242 INFO L93 Difference]: Finished difference Result 4242 states and 6230 transitions. [2020-10-27 05:20:01,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:20:01,243 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2020-10-27 05:20:01,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:20:01,258 INFO L225 Difference]: With dead ends: 4242 [2020-10-27 05:20:01,258 INFO L226 Difference]: Without dead ends: 3169 [2020-10-27 05:20:01,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:20:01,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3169 states. [2020-10-27 05:20:01,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3169 to 1425. [2020-10-27 05:20:01,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-27 05:20:01,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2038 transitions. [2020-10-27 05:20:01,522 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2038 transitions. Word has length 118 [2020-10-27 05:20:01,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:20:01,523 INFO L481 AbstractCegarLoop]: Abstraction has 1425 states and 2038 transitions. [2020-10-27 05:20:01,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:20:01,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2038 transitions. [2020-10-27 05:20:01,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 05:20:01,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:20:01,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:20:01,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:20:01,528 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:20:01,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:20:01,529 INFO L82 PathProgramCache]: Analyzing trace with hash 468239808, now seen corresponding path program 1 times [2020-10-27 05:20:01,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:20:01,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201452356] [2020-10-27 05:20:01,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:20:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:01,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:01,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:01,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:01,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:01,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:01,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:01,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:02,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:02,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:03,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:04,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:04,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:04,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:04,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:04,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:04,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:06,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:06,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 05:20:06,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:20:06,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 05:20:06,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:06,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 05:20:06,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:20:06,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 05:20:06,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:07,363 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:20:07,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:20:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:07,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:07,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:07,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:20:07,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:20:07,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:20:07,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:07,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:20:07,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:20:07,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:20:07,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:07,440 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 05:20:07,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201452356] [2020-10-27 05:20:07,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:20:07,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 05:20:07,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705127011] [2020-10-27 05:20:07,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 05:20:07,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:20:07,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 05:20:07,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:20:07,442 INFO L87 Difference]: Start difference. First operand 1425 states and 2038 transitions. Second operand 12 states. [2020-10-27 05:20:08,035 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 05:20:08,795 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-27 05:20:09,607 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-27 05:20:10,602 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-27 05:20:11,117 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-27 05:20:11,342 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-27 05:20:12,443 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-27 05:20:17,211 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 179 DAG size of output: 177 [2020-10-27 05:20:18,298 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 183 DAG size of output: 181 [2020-10-27 05:20:18,815 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 05:20:19,357 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 05:20:20,541 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 05:20:20,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:20:20,823 INFO L93 Difference]: Finished difference Result 7380 states and 10777 transitions. [2020-10-27 05:20:20,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 05:20:20,824 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 119 [2020-10-27 05:20:20,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:20:20,851 INFO L225 Difference]: With dead ends: 7380 [2020-10-27 05:20:20,851 INFO L226 Difference]: Without dead ends: 7175 [2020-10-27 05:20:20,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=461, Invalid=1701, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 05:20:20,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7175 states. [2020-10-27 05:20:21,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7175 to 1906. [2020-10-27 05:20:21,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1906 states. [2020-10-27 05:20:21,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2727 transitions. [2020-10-27 05:20:21,328 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2727 transitions. Word has length 119 [2020-10-27 05:20:21,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:20:21,329 INFO L481 AbstractCegarLoop]: Abstraction has 1906 states and 2727 transitions. [2020-10-27 05:20:21,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 05:20:21,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2727 transitions. [2020-10-27 05:20:21,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 05:20:21,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:20:21,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:20:21,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:20:21,336 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:20:21,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:20:21,337 INFO L82 PathProgramCache]: Analyzing trace with hash 39535077, now seen corresponding path program 1 times [2020-10-27 05:20:21,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:20:21,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722631434] [2020-10-27 05:20:21,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:20:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:21,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:21,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:21,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:21,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:21,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:21,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:21,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:21,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:22,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:22,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:22,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:26,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:26,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 05:20:26,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:20:26,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 05:20:26,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:20:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:20:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 05:20:26,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:26,675 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 18 [2020-10-27 05:20:27,267 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:20:27,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:20:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:27,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:27,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:27,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:20:27,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:20:27,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:20:27,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:20:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:20:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:20:27,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:27,335 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 05:20:27,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722631434] [2020-10-27 05:20:27,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:20:27,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:20:27,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431440033] [2020-10-27 05:20:27,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:20:27,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:20:27,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:20:27,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:20:27,338 INFO L87 Difference]: Start difference. First operand 1906 states and 2727 transitions. Second operand 10 states. [2020-10-27 05:20:27,897 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:20:32,449 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 05:20:32,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:20:32,512 INFO L93 Difference]: Finished difference Result 5283 states and 7704 transitions. [2020-10-27 05:20:32,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 05:20:32,513 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 119 [2020-10-27 05:20:32,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:20:32,526 INFO L225 Difference]: With dead ends: 5283 [2020-10-27 05:20:32,526 INFO L226 Difference]: Without dead ends: 5078 [2020-10-27 05:20:32,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2020-10-27 05:20:32,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5078 states. [2020-10-27 05:20:32,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5078 to 1425. [2020-10-27 05:20:32,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-27 05:20:32,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2032 transitions. [2020-10-27 05:20:32,883 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2032 transitions. Word has length 119 [2020-10-27 05:20:32,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:20:32,883 INFO L481 AbstractCegarLoop]: Abstraction has 1425 states and 2032 transitions. [2020-10-27 05:20:32,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:20:32,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2032 transitions. [2020-10-27 05:20:32,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 05:20:32,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:20:32,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:20:32,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 05:20:32,888 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:20:32,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:20:32,888 INFO L82 PathProgramCache]: Analyzing trace with hash 2003170812, now seen corresponding path program 1 times [2020-10-27 05:20:32,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:20:32,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59339813] [2020-10-27 05:20:32,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:20:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:32,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:32,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:32,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:33,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:33,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:33,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:33,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:33,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:33,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:33,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:33,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:34,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:34,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:36,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:36,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:37,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:37,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 05:20:37,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:20:37,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:20:37,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:37,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:20:37,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:20:37,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 05:20:37,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:38,616 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:20:38,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:20:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:38,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:38,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:38,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:20:38,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:20:38,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:20:38,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:20:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:20:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:20:38,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:38,682 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 05:20:38,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59339813] [2020-10-27 05:20:38,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:20:38,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:20:38,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702474519] [2020-10-27 05:20:38,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:20:38,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:20:38,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:20:38,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:20:38,684 INFO L87 Difference]: Start difference. First operand 1425 states and 2032 transitions. Second operand 10 states. [2020-10-27 05:20:39,297 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 05:20:44,095 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 05:20:44,679 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 05:20:44,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:20:44,720 INFO L93 Difference]: Finished difference Result 4175 states and 6059 transitions. [2020-10-27 05:20:44,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 05:20:44,721 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 119 [2020-10-27 05:20:44,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:20:44,730 INFO L225 Difference]: With dead ends: 4175 [2020-10-27 05:20:44,730 INFO L226 Difference]: Without dead ends: 3798 [2020-10-27 05:20:44,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2020-10-27 05:20:44,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3798 states. [2020-10-27 05:20:45,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3798 to 1593. [2020-10-27 05:20:45,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-10-27 05:20:45,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2268 transitions. [2020-10-27 05:20:45,084 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2268 transitions. Word has length 119 [2020-10-27 05:20:45,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:20:45,084 INFO L481 AbstractCegarLoop]: Abstraction has 1593 states and 2268 transitions. [2020-10-27 05:20:45,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:20:45,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2268 transitions. [2020-10-27 05:20:45,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 05:20:45,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:20:45,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:20:45,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 05:20:45,089 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:20:45,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:20:45,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1175099615, now seen corresponding path program 1 times [2020-10-27 05:20:45,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:20:45,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035846941] [2020-10-27 05:20:45,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:20:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:45,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:45,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:45,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:45,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:45,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:45,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:45,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:45,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:46,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:46,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:48,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:50,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:50,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 05:20:50,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:20:50,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 05:20:50,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:20:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:20:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 05:20:50,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:50,408 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 18 [2020-10-27 05:20:50,950 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:20:50,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:20:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:50,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:50,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:50,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:20:50,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:20:50,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:20:50,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:20:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:20:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:20:50,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:51,008 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 05:20:51,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035846941] [2020-10-27 05:20:51,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:20:51,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:20:51,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566988843] [2020-10-27 05:20:51,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:20:51,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:20:51,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:20:51,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:20:51,011 INFO L87 Difference]: Start difference. First operand 1593 states and 2268 transitions. Second operand 10 states. [2020-10-27 05:20:51,607 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:20:56,740 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 05:20:57,331 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 05:20:57,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:20:57,374 INFO L93 Difference]: Finished difference Result 5261 states and 7680 transitions. [2020-10-27 05:20:57,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:20:57,374 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 119 [2020-10-27 05:20:57,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:20:57,385 INFO L225 Difference]: With dead ends: 5261 [2020-10-27 05:20:57,385 INFO L226 Difference]: Without dead ends: 4884 [2020-10-27 05:20:57,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2020-10-27 05:20:57,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4884 states. [2020-10-27 05:20:57,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4884 to 1281. [2020-10-27 05:20:57,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2020-10-27 05:20:57,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1808 transitions. [2020-10-27 05:20:57,718 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1808 transitions. Word has length 119 [2020-10-27 05:20:57,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:20:57,719 INFO L481 AbstractCegarLoop]: Abstraction has 1281 states and 1808 transitions. [2020-10-27 05:20:57,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:20:57,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1808 transitions. [2020-10-27 05:20:57,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 05:20:57,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:20:57,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:20:57,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 05:20:57,723 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:20:57,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:20:57,723 INFO L82 PathProgramCache]: Analyzing trace with hash -166700756, now seen corresponding path program 1 times [2020-10-27 05:20:57,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:20:57,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652183216] [2020-10-27 05:20:57,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:20:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:57,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:57,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:57,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:57,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:57,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:57,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:57,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:58,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:58,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:59,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:59,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:02,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:02,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 05:21:02,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:21:02,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 05:21:02,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:02,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:21:02,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:21:02,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 05:21:02,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:03,148 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 18 [2020-10-27 05:21:03,723 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:21:03,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:03,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:03,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:03,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:03,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:03,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 05:21:03,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:03,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:21:03,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:03,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:21:03,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:03,775 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 05:21:03,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652183216] [2020-10-27 05:21:03,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:03,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:21:03,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341067242] [2020-10-27 05:21:03,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:21:03,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:03,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:21:03,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:21:03,777 INFO L87 Difference]: Start difference. First operand 1281 states and 1808 transitions. Second operand 10 states. [2020-10-27 05:21:04,428 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 05:21:09,193 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:21:09,804 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 05:21:09,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:09,869 INFO L93 Difference]: Finished difference Result 4621 states and 6714 transitions. [2020-10-27 05:21:09,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:21:09,870 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 119 [2020-10-27 05:21:09,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:09,880 INFO L225 Difference]: With dead ends: 4621 [2020-10-27 05:21:09,880 INFO L226 Difference]: Without dead ends: 4430 [2020-10-27 05:21:09,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2020-10-27 05:21:09,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4430 states. [2020-10-27 05:21:10,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4430 to 1687. [2020-10-27 05:21:10,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-10-27 05:21:10,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2376 transitions. [2020-10-27 05:21:10,367 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2376 transitions. Word has length 119 [2020-10-27 05:21:10,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:10,367 INFO L481 AbstractCegarLoop]: Abstraction has 1687 states and 2376 transitions. [2020-10-27 05:21:10,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:21:10,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2376 transitions. [2020-10-27 05:21:10,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 05:21:10,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:10,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:21:10,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 05:21:10,372 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:10,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:10,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1486357127, now seen corresponding path program 1 times [2020-10-27 05:21:10,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:10,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802537042] [2020-10-27 05:21:10,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:10,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:10,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:10,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:10,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:10,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:10,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:10,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:10,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:11,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:11,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:14,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:14,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:14,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:14,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:14,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:14,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:15,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:15,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 05:21:15,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:21:15,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 05:21:15,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:15,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:21:15,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:21:15,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 05:21:15,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:15,948 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:21:15,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:15,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:15,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:15,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:15,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:15,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:21:15,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:15,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:21:15,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:15,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:21:15,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:15,995 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 05:21:15,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802537042] [2020-10-27 05:21:15,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:15,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:21:15,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984507315] [2020-10-27 05:21:15,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:21:15,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:15,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:21:15,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:21:15,998 INFO L87 Difference]: Start difference. First operand 1687 states and 2376 transitions. Second operand 6 states. [2020-10-27 05:21:16,576 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:21:18,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:18,037 INFO L93 Difference]: Finished difference Result 2051 states and 2914 transitions. [2020-10-27 05:21:18,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:21:18,038 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-10-27 05:21:18,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:18,041 INFO L225 Difference]: With dead ends: 2051 [2020-10-27 05:21:18,041 INFO L226 Difference]: Without dead ends: 1264 [2020-10-27 05:21:18,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:21:18,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2020-10-27 05:21:18,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1264. [2020-10-27 05:21:18,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1264 states. [2020-10-27 05:21:18,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1771 transitions. [2020-10-27 05:21:18,464 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1771 transitions. Word has length 119 [2020-10-27 05:21:18,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:18,465 INFO L481 AbstractCegarLoop]: Abstraction has 1264 states and 1771 transitions. [2020-10-27 05:21:18,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:21:18,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1771 transitions. [2020-10-27 05:21:18,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 05:21:18,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:18,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:21:18,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 05:21:18,468 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:18,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:18,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1418382634, now seen corresponding path program 1 times [2020-10-27 05:21:18,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:18,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747952850] [2020-10-27 05:21:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:18,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:18,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:18,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:18,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:18,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:18,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:18,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:18,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:18,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:20,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:20,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:23,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:23,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 05:21:23,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:21:23,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 05:21:23,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:23,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:21:23,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:21:23,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 05:21:23,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:24,376 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:21:24,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:24,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:24,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:24,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:24,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:24,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 05:21:24,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:21:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:21:24,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:24,449 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 05:21:24,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747952850] [2020-10-27 05:21:24,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:24,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:21:24,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103118457] [2020-10-27 05:21:24,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:21:24,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:24,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:21:24,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:21:24,451 INFO L87 Difference]: Start difference. First operand 1264 states and 1771 transitions. Second operand 10 states. [2020-10-27 05:21:25,080 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:21:30,649 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 05:21:31,253 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 05:21:31,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:31,567 INFO L93 Difference]: Finished difference Result 4784 states and 6859 transitions. [2020-10-27 05:21:31,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:21:31,568 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 119 [2020-10-27 05:21:31,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:31,577 INFO L225 Difference]: With dead ends: 4784 [2020-10-27 05:21:31,578 INFO L226 Difference]: Without dead ends: 4556 [2020-10-27 05:21:31,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2020-10-27 05:21:31,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4556 states. [2020-10-27 05:21:32,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4556 to 1517. [2020-10-27 05:21:32,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1517 states. [2020-10-27 05:21:32,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2126 transitions. [2020-10-27 05:21:32,123 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2126 transitions. Word has length 119 [2020-10-27 05:21:32,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:32,124 INFO L481 AbstractCegarLoop]: Abstraction has 1517 states and 2126 transitions. [2020-10-27 05:21:32,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:21:32,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2126 transitions. [2020-10-27 05:21:32,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 05:21:32,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:32,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:21:32,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 05:21:32,128 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:32,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:32,128 INFO L82 PathProgramCache]: Analyzing trace with hash 564980613, now seen corresponding path program 1 times [2020-10-27 05:21:32,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:32,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953773104] [2020-10-27 05:21:32,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:32,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:32,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:32,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:32,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:32,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:32,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:32,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:32,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:33,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:33,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:33,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:33,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:33,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:33,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking...