/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=DEEPEST --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/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:45:48,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:45:48,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:45:48,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:45:48,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:45:48,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:45:48,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:45:48,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:45:48,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:45:48,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:45:48,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:45:48,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:45:48,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:45:48,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:45:48,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:45:48,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:45:48,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:45:48,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:45:48,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:45:48,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:45:48,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:45:48,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:45:48,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:45:48,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:45:48,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:45:48,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:45:48,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:45:48,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:45:48,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:45:48,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:45:48,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:45:48,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:45:48,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:45:48,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:45:48,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:45:48,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:45:48,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:45:48,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:45:48,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:45:48,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:45:48,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:45:48,271 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 22:45:48,338 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:45:48,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:45:48,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:45:48,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:45:48,343 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:45:48,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:45:48,344 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:45:48,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:45:48,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:45:48,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:45:48,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:45:48,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:45:48,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:45:48,349 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:45:48,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:45:48,349 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:45:48,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:45:48,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:45:48,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:45:48,350 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:45:48,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:45:48,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:45:48,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:45:48,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:45:48,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:45:48,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:45:48,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:45:48,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:45:48,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:45:48,353 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:45:48,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:45:48,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:45:48,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:45:48,847 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:45:48,848 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:45:48,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-10-27 22:45:48,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbdbabd6d/5e163ab2a7cf43f7a4b6ddd608943dab/FLAGe7b622828 [2020-10-27 22:45:49,632 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:45:49,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-10-27 22:45:49,645 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbdbabd6d/5e163ab2a7cf43f7a4b6ddd608943dab/FLAGe7b622828 [2020-10-27 22:45:49,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbdbabd6d/5e163ab2a7cf43f7a4b6ddd608943dab [2020-10-27 22:45:49,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:45:49,943 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:45:49,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:45:49,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:45:49,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:45:49,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:45:49" (1/1) ... [2020-10-27 22:45:49,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f1982c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:45:49, skipping insertion in model container [2020-10-27 22:45:49,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:45:49" (1/1) ... [2020-10-27 22:45:49,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:45:50,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:45:50,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:45:50,285 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:45:50,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:45:50,377 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:45:50,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:45:50 WrapperNode [2020-10-27 22:45:50,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:45:50,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:45:50,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:45:50,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:45:50,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:45:50" (1/1) ... [2020-10-27 22:45:50,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:45:50" (1/1) ... [2020-10-27 22:45:50,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:45:50" (1/1) ... [2020-10-27 22:45:50,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:45:50" (1/1) ... [2020-10-27 22:45:50,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:45:50" (1/1) ... [2020-10-27 22:45:50,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:45:50" (1/1) ... [2020-10-27 22:45:50,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:45:50" (1/1) ... [2020-10-27 22:45:50,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:45:50,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:45:50,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:45:50,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:45:50,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:45:50" (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 22:45:50,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:45:50,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:45:50,587 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:45:50,587 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 22:45:50,587 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 22:45:50,588 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 22:45:50,588 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 22:45:50,589 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 22:45:50,590 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:45:50,590 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 22:45:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:45:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:45:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:45:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:45:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 22:45:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 22:45:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 22:45:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 22:45:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 22:45:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 22:45:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 22:45:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 22:45:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 22:45:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 22:45:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:45:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:45:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:45:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:45:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:45:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:45:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:45:51,678 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:45:51,679 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 22:45:51,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:45:51 BoogieIcfgContainer [2020-10-27 22:45:51,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:45:51,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:45:51,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:45:51,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:45:51,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:45:49" (1/3) ... [2020-10-27 22:45:51,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f99afac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:45:51, skipping insertion in model container [2020-10-27 22:45:51,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:45:50" (2/3) ... [2020-10-27 22:45:51,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f99afac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:45:51, skipping insertion in model container [2020-10-27 22:45:51,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:45:51" (3/3) ... [2020-10-27 22:45:51,690 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-10-27 22:45:51,703 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:45:51,709 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:45:51,727 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:45:51,757 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:45:51,758 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:45:51,758 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:45:51,758 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:45:51,758 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:45:51,758 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:45:51,758 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:45:51,758 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:45:51,781 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states. [2020-10-27 22:45:51,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 22:45:51,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:51,794 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] [2020-10-27 22:45:51,794 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:51,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:51,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1884476108, now seen corresponding path program 1 times [2020-10-27 22:45:51,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:51,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586530325] [2020-10-27 22:45:51,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:52,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:52,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:52,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 22:45:52,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:52,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-10-27 22:45:52,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 22:45:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:52,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:45:52,997 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:45:53,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:53,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:53,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:53,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:53,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:53,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 22:45:53,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:53,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:53,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:53,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:53,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:53,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:45:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:53,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:53,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:53,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:45:53,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:53,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 22:45:53,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:53,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:53,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:53,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:53,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:53,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:45:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:53,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:53,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:53,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:45:53,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:53,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:45:53,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:53,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:53,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:45:53,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:53,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:53,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:45:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:53,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:53,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:53,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:45:53,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:53,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:45:53,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:53,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:53,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:45:53,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:53,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:45:53,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 22:45:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:53,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:53,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:53,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:45:53,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:53,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:45:53,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:53,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:53,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:45:53,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:53,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:53,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 22:45:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:53,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:53,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:53,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:45:53,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:53,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:45:53,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:53,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:45:53,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:53,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:53,363 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 22:45:53,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586530325] [2020-10-27 22:45:53,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:45:53,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 22:45:53,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726758345] [2020-10-27 22:45:53,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:45:53,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:53,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:45:53,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:45:53,391 INFO L87 Difference]: Start difference. First operand 153 states. Second operand 6 states. [2020-10-27 22:45:54,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:54,682 INFO L93 Difference]: Finished difference Result 257 states and 405 transitions. [2020-10-27 22:45:54,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:45:54,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-27 22:45:54,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:54,697 INFO L225 Difference]: With dead ends: 257 [2020-10-27 22:45:54,698 INFO L226 Difference]: Without dead ends: 157 [2020-10-27 22:45:54,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:45:54,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-27 22:45:54,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 145. [2020-10-27 22:45:54,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-27 22:45:54,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 232 transitions. [2020-10-27 22:45:54,768 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 232 transitions. Word has length 59 [2020-10-27 22:45:54,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:54,769 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 232 transitions. [2020-10-27 22:45:54,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:45:54,769 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 232 transitions. [2020-10-27 22:45:54,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 22:45:54,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:54,773 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] [2020-10-27 22:45:54,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:45:54,773 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:54,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:54,774 INFO L82 PathProgramCache]: Analyzing trace with hash -359507190, now seen corresponding path program 1 times [2020-10-27 22:45:54,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:54,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743270694] [2020-10-27 22:45:54,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:54,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:55,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:55,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 22:45:55,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:55,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-27 22:45:55,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:55,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:45:55,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 22:45:55,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:45:55,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:55,744 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:45:55,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:55,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:55,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:55,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:55,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:55,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:45:55,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:55,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:55,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:55,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:55,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:55,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:45:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:55,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:55,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:55,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:45:55,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:55,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 22:45:55,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:55,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:45:55,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:55,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:45:55,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:55,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:45:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:55,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:55,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:55,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:45:55,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:55,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:45:55,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:55,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:55,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:45:55,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:55,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:55,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:45:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:55,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:55,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:55,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:45:55,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:55,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:45:55,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:45:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:55,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:56,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 22:45:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:56,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:56,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:56,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:45:56,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:56,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:45:56,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:56,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:56,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:45:56,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:56,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:56,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 22:45:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:56,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:56,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:56,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:45:56,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:56,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:45:56,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:56,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:56,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:45:56,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:56,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:56,040 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 22:45:56,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743270694] [2020-10-27 22:45:56,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:45:56,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:45:56,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176250883] [2020-10-27 22:45:56,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:45:56,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:56,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:45:56,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:45:56,045 INFO L87 Difference]: Start difference. First operand 145 states and 232 transitions. Second operand 10 states. [2020-10-27 22:45:56,746 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:45:57,104 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:45:58,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:58,734 INFO L93 Difference]: Finished difference Result 258 states and 404 transitions. [2020-10-27 22:45:58,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 22:45:58,735 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-27 22:45:58,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:58,740 INFO L225 Difference]: With dead ends: 258 [2020-10-27 22:45:58,745 INFO L226 Difference]: Without dead ends: 166 [2020-10-27 22:45:58,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-27 22:45:58,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-27 22:45:58,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 145. [2020-10-27 22:45:58,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-27 22:45:58,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 211 transitions. [2020-10-27 22:45:58,782 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 211 transitions. Word has length 59 [2020-10-27 22:45:58,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:58,782 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 211 transitions. [2020-10-27 22:45:58,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:45:58,782 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 211 transitions. [2020-10-27 22:45:58,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 22:45:58,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:58,786 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] [2020-10-27 22:45:58,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:45:58,786 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:58,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:58,787 INFO L82 PathProgramCache]: Analyzing trace with hash 547360494, now seen corresponding path program 1 times [2020-10-27 22:45:58,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:58,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868337267] [2020-10-27 22:45:58,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:58,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:58,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:58,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:59,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:03,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:03,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:46:03,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:46:03,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 22:46:03,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:03,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:46:03,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 22:46:03,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 22:46:03,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:46:04,168 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:46:04,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:04,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:04,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:04,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:04,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:04,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:46:04,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:04,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:04,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:04,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:04,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:04,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:46:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:04,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:04,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:04,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 22:46:04,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:04,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 22:46:04,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:04,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:04,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:04,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 22:46:04,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:04,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:46:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:04,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:04,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:04,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:04,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:04,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:46:04,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:04,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:04,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:46:04,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:46:04,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:04,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:46:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:04,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:04,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:04,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:04,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:04,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 22:46:04,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:04,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:04,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:46:04,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:46:04,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:04,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:46:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:04,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:04,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:04,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:04,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:04,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:46:04,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:04,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:04,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:46:04,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:46:04,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:04,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:46:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:04,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:04,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:04,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:04,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:04,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:46:04,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:46:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:46:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:46:04,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:04,687 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 22:46:04,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868337267] [2020-10-27 22:46:04,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:46:04,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 22:46:04,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959946944] [2020-10-27 22:46:04,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 22:46:04,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:04,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 22:46:04,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-27 22:46:04,696 INFO L87 Difference]: Start difference. First operand 145 states and 211 transitions. Second operand 14 states. [2020-10-27 22:46:05,023 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:46:05,634 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:46:05,936 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:46:08,497 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:46:08,818 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:46:09,132 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:46:13,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:13,847 INFO L93 Difference]: Finished difference Result 840 states and 1291 transitions. [2020-10-27 22:46:13,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-27 22:46:13,847 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 79 [2020-10-27 22:46:13,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:13,855 INFO L225 Difference]: With dead ends: 840 [2020-10-27 22:46:13,855 INFO L226 Difference]: Without dead ends: 754 [2020-10-27 22:46:13,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=604, Invalid=2048, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 22:46:13,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2020-10-27 22:46:13,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 634. [2020-10-27 22:46:13,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-10-27 22:46:13,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 972 transitions. [2020-10-27 22:46:13,951 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 972 transitions. Word has length 79 [2020-10-27 22:46:13,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:13,952 INFO L481 AbstractCegarLoop]: Abstraction has 634 states and 972 transitions. [2020-10-27 22:46:13,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 22:46:13,952 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 972 transitions. [2020-10-27 22:46:13,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 22:46:13,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:13,958 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] [2020-10-27 22:46:13,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:46:13,958 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:13,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:13,959 INFO L82 PathProgramCache]: Analyzing trace with hash -275414784, now seen corresponding path program 1 times [2020-10-27 22:46:13,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:13,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699717705] [2020-10-27 22:46:13,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:14,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:14,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:14,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:14,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:15,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:19,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:19,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 22:46:19,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:46:19,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 22:46:19,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:19,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:46:19,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 22:46:19,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 22:46:19,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:19,356 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:46:19,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:19,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:19,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:19,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:19,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:19,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:46:19,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:19,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:19,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:19,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:19,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:19,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:46:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:19,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:19,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:19,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 22:46:19,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:19,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 22:46:19,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 22:46:19,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:19,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:46:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:19,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:19,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:19,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:19,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:19,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:46:19,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:19,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:19,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:46:19,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:46:19,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:46:19,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:46:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:19,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:19,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:19,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:19,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:19,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:46:19,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:19,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:19,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:46:19,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:46:19,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:19,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:46:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:19,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:19,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:19,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:19,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:19,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:46:19,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:19,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:19,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:46:19,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:46:19,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:19,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:46:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:19,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:19,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:19,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:46:19,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:19,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:46:19,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:19,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:46:19,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:46:19,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:46:19,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:46:19,826 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 22:46:19,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699717705] [2020-10-27 22:46:19,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:46:19,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 22:46:19,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000219927] [2020-10-27 22:46:19,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 22:46:19,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:19,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 22:46:19,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-27 22:46:19,832 INFO L87 Difference]: Start difference. First operand 634 states and 972 transitions. Second operand 14 states. [2020-10-27 22:46:20,181 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 22:46:20,924 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:46:21,257 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:46:21,571 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:46:22,657 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 22:46:24,950 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:46:25,267 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:46:25,616 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 22:46:25,940 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 22:46:26,273 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:46:30,706 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:46:31,067 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:46:34,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:34,012 INFO L93 Difference]: Finished difference Result 2937 states and 4589 transitions. [2020-10-27 22:46:34,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-27 22:46:34,013 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 80 [2020-10-27 22:46:34,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:34,031 INFO L225 Difference]: With dead ends: 2937 [2020-10-27 22:46:34,031 INFO L226 Difference]: Without dead ends: 2362 [2020-10-27 22:46:34,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2046 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1125, Invalid=4727, Unknown=0, NotChecked=0, Total=5852 [2020-10-27 22:46:34,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2020-10-27 22:46:34,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 1657. [2020-10-27 22:46:34,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1657 states. [2020-10-27 22:46:34,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 2594 transitions. [2020-10-27 22:46:34,240 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 2594 transitions. Word has length 80 [2020-10-27 22:46:34,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:34,240 INFO L481 AbstractCegarLoop]: Abstraction has 1657 states and 2594 transitions. [2020-10-27 22:46:34,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 22:46:34,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 2594 transitions. [2020-10-27 22:46:34,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 22:46:34,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:34,248 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] [2020-10-27 22:46:34,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:46:34,248 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:34,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:34,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1613877673, now seen corresponding path program 1 times [2020-10-27 22:46:34,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:34,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122530773] [2020-10-27 22:46:34,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:34,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:34,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:34,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:34,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:35,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:39,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:39,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 22:46:39,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:46:39,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 22:46:39,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:39,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:46:39,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 22:46:39,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 22:46:39,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:39,607 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:46:39,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:39,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:39,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:39,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:39,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:39,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:39,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:46:39,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:39,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:39,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:39,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:39,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:39,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:46:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:39,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:39,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:39,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 22:46:39,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:39,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 22:46:39,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:46:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 22:46:39,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:39,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:46:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:39,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:39,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:39,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:39,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:39,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:46:39,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:46:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:46:39,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:39,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:46:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:39,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:39,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:39,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:39,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:39,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:46:39,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:39,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:39,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:46:39,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:46:39,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:39,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:46:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:39,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:39,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:39,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:39,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:39,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:46:39,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:39,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:46:39,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:39,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:46:39,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:39,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:46:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:39,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:39,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:39,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:46:39,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:39,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:46:39,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:39,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:46:39,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 22:46:39,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:46:39,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:39,963 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 22:46:39,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122530773] [2020-10-27 22:46:39,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:46:39,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:46:39,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266965031] [2020-10-27 22:46:39,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:46:39,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:39,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:46:39,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:46:39,966 INFO L87 Difference]: Start difference. First operand 1657 states and 2594 transitions. Second operand 10 states. [2020-10-27 22:46:40,284 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:46:40,869 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:46:41,319 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-27 22:46:42,638 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:46:42,931 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:46:44,644 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-10-27 22:46:45,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:45,879 INFO L93 Difference]: Finished difference Result 6584 states and 10319 transitions. [2020-10-27 22:46:45,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 22:46:45,879 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2020-10-27 22:46:45,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:45,911 INFO L225 Difference]: With dead ends: 6584 [2020-10-27 22:46:45,911 INFO L226 Difference]: Without dead ends: 5009 [2020-10-27 22:46:45,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 22:46:45,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5009 states. [2020-10-27 22:46:46,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5009 to 4337. [2020-10-27 22:46:46,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4337 states. [2020-10-27 22:46:46,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4337 states to 4337 states and 6775 transitions. [2020-10-27 22:46:46,292 INFO L78 Accepts]: Start accepts. Automaton has 4337 states and 6775 transitions. Word has length 81 [2020-10-27 22:46:46,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:46,293 INFO L481 AbstractCegarLoop]: Abstraction has 4337 states and 6775 transitions. [2020-10-27 22:46:46,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:46:46,293 INFO L276 IsEmpty]: Start isEmpty. Operand 4337 states and 6775 transitions. [2020-10-27 22:46:46,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 22:46:46,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:46,296 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] [2020-10-27 22:46:46,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:46:46,296 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:46,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:46,296 INFO L82 PathProgramCache]: Analyzing trace with hash 601120289, now seen corresponding path program 1 times [2020-10-27 22:46:46,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:46,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674976985] [2020-10-27 22:46:46,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:46,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:46,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:46,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:46,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:46,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:46,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:50,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:51,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:51,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 22:46:51,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:46:51,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 22:46:51,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:51,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:51,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 22:46:51,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:46:51,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:51,641 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:46:51,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:51,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:51,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:51,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:51,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:51,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:46:51,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:51,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:51,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:51,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:51,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:46:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:51,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:51,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:51,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 22:46:51,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:51,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 22:46:51,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:51,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:46:51,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:51,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 22:46:51,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:51,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:46:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:51,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:51,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:51,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:51,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:51,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:46:51,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:51,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:46:51,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:51,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:46:51,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:51,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:46:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:51,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:51,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:51,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:51,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:51,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:46:51,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:51,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:46:51,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:51,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:46:51,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:51,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:46:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:51,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:51,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:51,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:46:51,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:51,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:46:51,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:51,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:51,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:46:51,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:46:51,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:51,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:46:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:51,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:51,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:51,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:51,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:51,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:46:51,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:51,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:51,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:51,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:51,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:51,922 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 22:46:51,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674976985] [2020-10-27 22:46:51,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:46:51,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:46:51,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435162606] [2020-10-27 22:46:51,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:46:51,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:51,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:46:51,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:46:51,927 INFO L87 Difference]: Start difference. First operand 4337 states and 6775 transitions. Second operand 8 states. [2020-10-27 22:46:52,242 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:46:54,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:54,965 INFO L93 Difference]: Finished difference Result 12989 states and 20250 transitions. [2020-10-27 22:46:54,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:46:54,966 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-27 22:46:54,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:55,021 INFO L225 Difference]: With dead ends: 12989 [2020-10-27 22:46:55,021 INFO L226 Difference]: Without dead ends: 8734 [2020-10-27 22:46:55,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:46:55,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8734 states. [2020-10-27 22:46:55,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8734 to 7683. [2020-10-27 22:46:55,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7683 states. [2020-10-27 22:46:55,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7683 states to 7683 states and 11843 transitions. [2020-10-27 22:46:55,745 INFO L78 Accepts]: Start accepts. Automaton has 7683 states and 11843 transitions. Word has length 82 [2020-10-27 22:46:55,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:55,745 INFO L481 AbstractCegarLoop]: Abstraction has 7683 states and 11843 transitions. [2020-10-27 22:46:55,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:46:55,746 INFO L276 IsEmpty]: Start isEmpty. Operand 7683 states and 11843 transitions. [2020-10-27 22:46:55,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 22:46:55,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:55,748 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] [2020-10-27 22:46:55,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:46:55,748 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:55,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:55,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1758787319, now seen corresponding path program 1 times [2020-10-27 22:46:55,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:55,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030315639] [2020-10-27 22:46:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:55,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:55,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:55,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:56,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:56,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:00,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:00,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 22:47:00,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:47:00,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 22:47:00,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:00,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:47:00,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 22:47:00,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 22:47:00,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:01,137 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:01,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:01,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:01,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:01,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:01,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:01,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:47:01,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:01,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:01,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:01,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:01,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:01,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:01,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:01,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:01,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 22:47:01,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:01,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 22:47:01,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:01,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:47:01,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:01,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 22:47:01,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:01,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:47:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:01,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:01,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:01,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:01,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:01,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:47:01,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:01,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:01,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:01,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:47:01,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:01,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:47:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:01,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:01,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:01,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:01,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:01,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:47:01,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:01,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:01,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:01,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:47:01,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:01,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:47:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:01,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:01,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:01,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:01,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:01,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:47:01,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:01,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:01,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:01,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:01,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:01,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:47:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:01,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:01,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:01,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:47:01,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:01,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:47:01,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:01,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:01,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:47:01,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:47:01,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:01,429 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 22:47:01,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030315639] [2020-10-27 22:47:01,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:01,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:47:01,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101655867] [2020-10-27 22:47:01,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:47:01,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:01,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:47:01,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:47:01,434 INFO L87 Difference]: Start difference. First operand 7683 states and 11843 transitions. Second operand 10 states. [2020-10-27 22:47:01,821 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:47:02,503 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:47:04,234 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:04,598 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:47:09,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:09,305 INFO L93 Difference]: Finished difference Result 31500 states and 48397 transitions. [2020-10-27 22:47:09,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 22:47:09,306 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-10-27 22:47:09,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:09,431 INFO L225 Difference]: With dead ends: 31500 [2020-10-27 22:47:09,431 INFO L226 Difference]: Without dead ends: 23899 [2020-10-27 22:47:09,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 22:47:09,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23899 states. [2020-10-27 22:47:11,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23899 to 20910. [2020-10-27 22:47:11,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20910 states. [2020-10-27 22:47:11,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20910 states to 20910 states and 31991 transitions. [2020-10-27 22:47:11,193 INFO L78 Accepts]: Start accepts. Automaton has 20910 states and 31991 transitions. Word has length 82 [2020-10-27 22:47:11,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:11,193 INFO L481 AbstractCegarLoop]: Abstraction has 20910 states and 31991 transitions. [2020-10-27 22:47:11,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:47:11,193 INFO L276 IsEmpty]: Start isEmpty. Operand 20910 states and 31991 transitions. [2020-10-27 22:47:11,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 22:47:11,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:11,197 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] [2020-10-27 22:47:11,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:47:11,197 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:11,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:11,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1431374006, now seen corresponding path program 1 times [2020-10-27 22:47:11,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:11,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109839076] [2020-10-27 22:47:11,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:11,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:11,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:11,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:11,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:11,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:11,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:15,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:16,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:16,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 22:47:16,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:47:16,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 22:47:16,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 22:47:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 22:47:16,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:16,617 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:16,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:16,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:16,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:16,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:16,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:16,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:47:16,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:16,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:16,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:16,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:16,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:16,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:16,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:16,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:16,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 22:47:16,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:16,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 22:47:16,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:16,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 22:47:16,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:16,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:47:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:16,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:16,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:16,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:16,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:16,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:47:16,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:16,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:16,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:16,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:47:16,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:47:16,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:47:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:16,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:16,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:16,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:47:16,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:16,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 22:47:16,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:47:16,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:47:16,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 22:47:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:16,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:16,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:16,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:16,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:16,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:47:16,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:16,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:16,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:16,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:16,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:16,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:47:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:16,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:16,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:16,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:16,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:16,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:47:16,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:16,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:16,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:16,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:16,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:16,958 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 22:47:16,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109839076] [2020-10-27 22:47:16,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:16,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:47:16,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978806092] [2020-10-27 22:47:16,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:47:16,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:16,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:47:16,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:47:16,962 INFO L87 Difference]: Start difference. First operand 20910 states and 31991 transitions. Second operand 8 states. [2020-10-27 22:47:17,285 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:47:21,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:21,797 INFO L93 Difference]: Finished difference Result 61880 states and 94686 transitions. [2020-10-27 22:47:21,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:47:21,798 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-27 22:47:21,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:21,982 INFO L225 Difference]: With dead ends: 61880 [2020-10-27 22:47:21,982 INFO L226 Difference]: Without dead ends: 41052 [2020-10-27 22:47:22,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:47:22,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41052 states. [2020-10-27 22:47:24,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41052 to 36493. [2020-10-27 22:47:24,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36493 states. [2020-10-27 22:47:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36493 states to 36493 states and 54756 transitions. [2020-10-27 22:47:24,967 INFO L78 Accepts]: Start accepts. Automaton has 36493 states and 54756 transitions. Word has length 82 [2020-10-27 22:47:24,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:24,968 INFO L481 AbstractCegarLoop]: Abstraction has 36493 states and 54756 transitions. [2020-10-27 22:47:24,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:47:24,968 INFO L276 IsEmpty]: Start isEmpty. Operand 36493 states and 54756 transitions. [2020-10-27 22:47:24,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 22:47:24,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:24,969 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] [2020-10-27 22:47:24,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:47:24,970 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:24,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:24,970 INFO L82 PathProgramCache]: Analyzing trace with hash 463481599, now seen corresponding path program 1 times [2020-10-27 22:47:24,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:24,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856596178] [2020-10-27 22:47:24,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:25,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:25,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:25,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:25,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:25,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:27,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:27,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:27,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:30,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:30,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 22:47:30,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 22:47:30,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 22:47:30,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 22:47:30,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:47:30,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:30,302 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:30,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:30,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:30,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:30,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:30,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:30,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:47:30,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:30,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:30,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:30,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:30,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:30,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:30,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:30,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:30,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 22:47:30,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:30,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 22:47:30,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:30,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 22:47:30,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:30,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:47:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:30,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:30,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:30,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:47:30,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:30,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 22:47:30,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:30,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:30,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:30,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:47:30,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:30,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:47:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:30,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:30,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:30,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:30,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:30,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:47:30,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:30,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:30,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:30,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:30,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:30,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 22:47:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:30,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:30,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:30,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:30,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:30,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:47:30,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:30,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:30,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:30,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:30,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:30,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:47:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:30,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:30,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:30,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:47:30,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:30,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:47:30,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:30,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:30,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:47:30,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:30,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:30,550 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 22:47:30,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856596178] [2020-10-27 22:47:30,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:30,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:47:30,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372868060] [2020-10-27 22:47:30,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:47:30,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:30,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:47:30,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:47:30,552 INFO L87 Difference]: Start difference. First operand 36493 states and 54756 transitions. Second operand 8 states. [2020-10-27 22:47:30,878 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:47:36,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:36,764 INFO L93 Difference]: Finished difference Result 104987 states and 157479 transitions. [2020-10-27 22:47:36,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:47:36,765 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-10-27 22:47:36,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:37,366 INFO L225 Difference]: With dead ends: 104987 [2020-10-27 22:47:37,366 INFO L226 Difference]: Without dead ends: 68564 [2020-10-27 22:47:37,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:47:37,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68564 states. [2020-10-27 22:47:42,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68564 to 61845. [2020-10-27 22:47:42,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61845 states. [2020-10-27 22:47:42,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61845 states to 61845 states and 90844 transitions. [2020-10-27 22:47:42,439 INFO L78 Accepts]: Start accepts. Automaton has 61845 states and 90844 transitions. Word has length 83 [2020-10-27 22:47:42,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:42,440 INFO L481 AbstractCegarLoop]: Abstraction has 61845 states and 90844 transitions. [2020-10-27 22:47:42,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:47:42,440 INFO L276 IsEmpty]: Start isEmpty. Operand 61845 states and 90844 transitions. [2020-10-27 22:47:42,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 22:47:42,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:42,441 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] [2020-10-27 22:47:42,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:47:42,441 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:42,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:42,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1040280946, now seen corresponding path program 1 times [2020-10-27 22:47:42,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:42,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779049570] [2020-10-27 22:47:42,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:42,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:42,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:42,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:43,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:43,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:45,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:45,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 22:47:45,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:47:45,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3335 [2020-10-27 22:47:45,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:45,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:45,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 22:47:45,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 22:47:45,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:46,091 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:46,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:46,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:46,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:46,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:46,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:46,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:47:46,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:46,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:46,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:46,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:46,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:46,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:46,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:46,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:46,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 22:47:46,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:46,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:47:46,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:46,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:46,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:46,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:47:46,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:46,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:47:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:46,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:46,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:46,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:46,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:46,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:47:46,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:46,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:46,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:46,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:47:46,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:46,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:47:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:46,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:46,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:46,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:46,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:46,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:47:46,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:46,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:46,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:46,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:47:46,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:46,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:47:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:46,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:46,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:46,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:46,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:46,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:47:46,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:46,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:46,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:46,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:46,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:46,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:47:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:46,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:46,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:46,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:47:46,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:46,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:47:46,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 22:47:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:46,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:46,312 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 22:47:46,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779049570] [2020-10-27 22:47:46,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:46,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:47:46,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516987780] [2020-10-27 22:47:46,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:47:46,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:46,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:47:46,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:47:46,314 INFO L87 Difference]: Start difference. First operand 61845 states and 90844 transitions. Second operand 9 states. [2020-10-27 22:47:46,632 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:47:49,240 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:47:52,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:52,962 INFO L93 Difference]: Finished difference Result 137673 states and 202483 transitions. [2020-10-27 22:47:52,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:47:52,965 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-10-27 22:47:52,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:53,410 INFO L225 Difference]: With dead ends: 137673 [2020-10-27 22:47:53,411 INFO L226 Difference]: Without dead ends: 75900 [2020-10-27 22:47:53,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:47:53,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75900 states. [2020-10-27 22:47:58,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75900 to 66707. [2020-10-27 22:47:58,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66707 states. [2020-10-27 22:47:58,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66707 states to 66707 states and 98063 transitions. [2020-10-27 22:47:58,286 INFO L78 Accepts]: Start accepts. Automaton has 66707 states and 98063 transitions. Word has length 85 [2020-10-27 22:47:58,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:58,287 INFO L481 AbstractCegarLoop]: Abstraction has 66707 states and 98063 transitions. [2020-10-27 22:47:58,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:47:58,287 INFO L276 IsEmpty]: Start isEmpty. Operand 66707 states and 98063 transitions. [2020-10-27 22:47:58,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 22:47:58,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:58,288 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] [2020-10-27 22:47:58,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:47:58,288 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:58,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:58,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1128665665, now seen corresponding path program 1 times [2020-10-27 22:47:58,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:58,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275323104] [2020-10-27 22:47:58,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:58,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:58,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:58,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:58,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:59,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:59,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:02,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:02,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 22:48:02,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:48:02,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4540 [2020-10-27 22:48:02,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:02,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:02,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 22:48:02,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 22:48:02,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:03,145 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:03,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:03,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:03,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:03,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:03,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:03,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:48:03,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:03,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:03,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:03,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:03,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:03,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:03,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:03,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:03,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 22:48:03,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:03,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:48:03,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:03,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:03,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:48:03,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:03,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:48:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:03,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:03,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:03,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:03,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:03,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:48:03,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:03,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:03,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:03,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:03,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:03,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:48:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:03,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:03,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:03,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:03,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:03,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:48:03,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:03,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:03,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:03,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:48:03,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:03,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:48:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:03,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:03,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:03,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:48:03,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:03,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:48:03,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:03,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:03,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 22:48:03,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:03,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:03,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 22:48:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:03,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:03,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:03,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:48:03,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:03,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:48:03,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:03,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:03,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 22:48:03,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:03,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:03,379 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 22:48:03,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275323104] [2020-10-27 22:48:03,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:03,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:48:03,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867079022] [2020-10-27 22:48:03,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:48:03,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:03,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:48:03,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:48:03,381 INFO L87 Difference]: Start difference. First operand 66707 states and 98063 transitions. Second operand 9 states. [2020-10-27 22:48:03,704 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:48:06,362 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:48:10,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:48:10,630 INFO L93 Difference]: Finished difference Result 151376 states and 222964 transitions. [2020-10-27 22:48:10,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:48:10,630 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-27 22:48:10,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:48:10,889 INFO L225 Difference]: With dead ends: 151376 [2020-10-27 22:48:10,889 INFO L226 Difference]: Without dead ends: 84750 [2020-10-27 22:48:10,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:48:11,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84750 states. [2020-10-27 22:48:15,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84750 to 74433. [2020-10-27 22:48:15,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74433 states. [2020-10-27 22:48:16,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74433 states to 74433 states and 109567 transitions. [2020-10-27 22:48:16,071 INFO L78 Accepts]: Start accepts. Automaton has 74433 states and 109567 transitions. Word has length 87 [2020-10-27 22:48:16,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:48:16,072 INFO L481 AbstractCegarLoop]: Abstraction has 74433 states and 109567 transitions. [2020-10-27 22:48:16,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:48:16,072 INFO L276 IsEmpty]: Start isEmpty. Operand 74433 states and 109567 transitions. [2020-10-27 22:48:16,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 22:48:16,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:48:16,073 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] [2020-10-27 22:48:16,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 22:48:16,073 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:48:16,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:48:16,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1327376752, now seen corresponding path program 1 times [2020-10-27 22:48:16,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:48:16,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864386416] [2020-10-27 22:48:16,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:48:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:16,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:16,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:16,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:16,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:16,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:17,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:17,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:21,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:21,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 22:48:21,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:48:21,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 22:48:21,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:21,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:21,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 22:48:21,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 22:48:21,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:21,391 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:21,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:21,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:21,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:21,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:21,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:21,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:48:21,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:21,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:21,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:21,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:21,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:21,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:21,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:21,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:21,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 22:48:21,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:21,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:48:21,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:21,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:21,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:21,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 22:48:21,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:21,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:48:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:21,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:21,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:21,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:21,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:21,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:48:21,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:48:21,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:21,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:21,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:21,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:48:21,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:21,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:48:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:21,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:21,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:21,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:48:21,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:21,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:48:21,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 22:48:21,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:21,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 22:48:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:21,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:21,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:21,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:48:21,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:21,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:48:21,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:21,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:21,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:21,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 22:48:21,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:21,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 22:48:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:21,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:21,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:21,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:21,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:48:21,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:48:21,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:48:21,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:21,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:21,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:48:21,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:48:21,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:21,621 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 22:48:21,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864386416] [2020-10-27 22:48:21,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:21,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:48:21,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387268397] [2020-10-27 22:48:21,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:48:21,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:21,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:48:21,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:48:21,623 INFO L87 Difference]: Start difference. First operand 74433 states and 109567 transitions. Second operand 9 states. [2020-10-27 22:48:21,939 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:48:23,439 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:48:33,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:48:33,625 INFO L93 Difference]: Finished difference Result 235050 states and 349621 transitions. [2020-10-27 22:48:33,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 22:48:33,626 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-27 22:48:33,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:48:34,220 INFO L225 Difference]: With dead ends: 235050 [2020-10-27 22:48:34,221 INFO L226 Difference]: Without dead ends: 160686 [2020-10-27 22:48:34,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:48:34,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160686 states. [2020-10-27 22:48:44,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160686 to 144924. [2020-10-27 22:48:44,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144924 states. [2020-10-27 22:48:44,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144924 states to 144924 states and 211501 transitions. [2020-10-27 22:48:44,972 INFO L78 Accepts]: Start accepts. Automaton has 144924 states and 211501 transitions. Word has length 89 [2020-10-27 22:48:44,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:48:44,972 INFO L481 AbstractCegarLoop]: Abstraction has 144924 states and 211501 transitions. [2020-10-27 22:48:44,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:48:44,972 INFO L276 IsEmpty]: Start isEmpty. Operand 144924 states and 211501 transitions. [2020-10-27 22:48:44,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 22:48:44,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:48:44,973 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] [2020-10-27 22:48:44,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 22:48:44,973 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:48:44,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:48:44,974 INFO L82 PathProgramCache]: Analyzing trace with hash -32521241, now seen corresponding path program 1 times [2020-10-27 22:48:44,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:48:44,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367641659] [2020-10-27 22:48:44,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:48:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:45,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:45,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:45,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:45,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:45,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:47,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:50,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:50,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 22:48:50,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:48:50,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 22:48:50,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:50,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:48:50,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 22:48:50,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 22:48:50,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:50,320 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:50,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:50,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:50,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:50,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:50,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:50,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:48:50,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:50,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:50,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:50,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:50,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:50,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:50,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:50,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:50,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 22:48:50,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:50,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 22:48:50,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:50,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:50,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:50,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 22:48:50,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:50,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:48:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:50,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:50,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:50,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:48:50,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:50,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:48:50,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:50,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:50,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:50,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:48:50,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:50,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 22:48:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:50,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:50,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:50,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:48:50,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:50,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:48:50,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:50,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:50,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:50,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:48:50,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:50,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 22:48:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:50,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:50,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:50,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:48:50,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:50,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:48:50,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:50,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:50,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:50,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:48:50,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:50,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:48:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:50,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:50,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:50,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 22:48:50,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:50,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:48:50,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:50,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:50,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 22:48:50,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:48:50,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:50,721 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 22:48:50,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367641659] [2020-10-27 22:48:50,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:50,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 22:48:50,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580290267] [2020-10-27 22:48:50,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:48:50,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:50,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:48:50,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:48:50,724 INFO L87 Difference]: Start difference. First operand 144924 states and 211501 transitions. Second operand 13 states. [2020-10-27 22:48:51,066 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:48:51,765 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:48:52,052 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:48:53,261 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 22:48:54,162 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 22:48:55,442 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 185