/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:15:23,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:15:23,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:15:24,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:15:24,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:15:24,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:15:24,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:15:24,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:15:24,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:15:24,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:15:24,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:15:24,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:15:24,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:15:24,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:15:24,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:15:24,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:15:24,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:15:24,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:15:24,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:15:24,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:15:24,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:15:24,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:15:24,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:15:24,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:15:24,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:15:24,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:15:24,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:15:24,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:15:24,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:15:24,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:15:24,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:15:24,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:15:24,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:15:24,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:15:24,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:15:24,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:15:24,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:15:24,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:15:24,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:15:24,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:15:24,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:15:24,095 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 04:15:24,154 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:15:24,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:15:24,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:15:24,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:15:24,160 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:15:24,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:15:24,161 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:15:24,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:15:24,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:15:24,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:15:24,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:15:24,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:15:24,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:15:24,163 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:15:24,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:15:24,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:15:24,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:15:24,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:15:24,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:15:24,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:15:24,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:15:24,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:15:24,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:15:24,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:15:24,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:15:24,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:15:24,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:15:24,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:15:24,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:15:24,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:15:24,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:15:24,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:15:24,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:15:24,694 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:15:24,695 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:15:24,698 INFO L432 ainManager$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 04:15:24,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a6658c84/b9573979be254071916e260654ff41cc/FLAGd324328fc [2020-10-27 04:15:25,416 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:15:25,417 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 04:15:25,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a6658c84/b9573979be254071916e260654ff41cc/FLAGd324328fc [2020-10-27 04:15:25,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a6658c84/b9573979be254071916e260654ff41cc [2020-10-27 04:15:25,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:15:25,771 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:15:25,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:15:25,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:15:25,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:15:25,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:15:25" (1/1) ... [2020-10-27 04:15:25,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42b147c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:25, skipping insertion in model container [2020-10-27 04:15:25,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:15:25" (1/1) ... [2020-10-27 04:15:25,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:15:25,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:15:26,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:15:26,170 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:15:26,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:15:26,319 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:15:26,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26 WrapperNode [2020-10-27 04:15:26,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:15:26,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:15:26,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:15:26,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:15:26,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ... [2020-10-27 04:15:26,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ... [2020-10-27 04:15:26,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ... [2020-10-27 04:15:26,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ... [2020-10-27 04:15:26,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ... [2020-10-27 04:15:26,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ... [2020-10-27 04:15:26,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ... [2020-10-27 04:15:26,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:15:26,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:15:26,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:15:26,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:15:26,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (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 04:15:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:15:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:15:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:15:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:15:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:15:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:15:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:15:26,477 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:15:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:15:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:15:26,478 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:15:26,478 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:15:26,478 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:15:26,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:15:26,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:15:26,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:15:26,484 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:15:26,484 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:15:26,484 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:15:26,484 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:15:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:15:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:15:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:15:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:15:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:15:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:15:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:15:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:15:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:15:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:15:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:15:27,308 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:15:27,309 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:15:27,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:15:27 BoogieIcfgContainer [2020-10-27 04:15:27,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:15:27,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:15:27,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:15:27,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:15:27,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:15:25" (1/3) ... [2020-10-27 04:15:27,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6368f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:15:27, skipping insertion in model container [2020-10-27 04:15:27,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (2/3) ... [2020-10-27 04:15:27,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6368f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:15:27, skipping insertion in model container [2020-10-27 04:15:27,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:15:27" (3/3) ... [2020-10-27 04:15:27,321 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-10-27 04:15:27,333 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:15:27,338 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:15:27,351 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:15:27,378 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:15:27,378 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:15:27,378 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:15:27,378 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:15:27,378 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:15:27,378 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:15:27,379 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:15:27,379 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:15:27,400 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states. [2020-10-27 04:15:27,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 04:15:27,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:27,412 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 04:15:27,412 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:27,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:27,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1884476108, now seen corresponding path program 1 times [2020-10-27 04:15:27,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:27,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324639162] [2020-10-27 04:15:27,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:27,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:28,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 04:15:28,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-10-27 04:15:28,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:28,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:28,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 04:15:28,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:28,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:15:28,621 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:15:28,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:28,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:28,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:28,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:28,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:15:28,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:28,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:28,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:28,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:28,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:28,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:15:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:28,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:28,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:15:28,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:28,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:15:28,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:28,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:28,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:28,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:28,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:28,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 04:15:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:28,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:28,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:15:28,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:28,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 04:15:28,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:28,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:28,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:15:28,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:28,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:15:28,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:15:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:28,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:28,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:15:28,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:28,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:15:28,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:28,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:28,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:15:28,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:28,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:15:28,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 04:15:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:28,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:28,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:15:28,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:28,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:15:28,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:28,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:28,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:15:28,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:28,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:28,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:15:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:28,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:28,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:15:28,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:28,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:15:28,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:15:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:28,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:28,923 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 04:15:28,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324639162] [2020-10-27 04:15:28,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:15:28,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 04:15:28,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942289338] [2020-10-27 04:15:28,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:15:28,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:28,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:15:28,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:15:28,950 INFO L87 Difference]: Start difference. First operand 153 states. Second operand 6 states. [2020-10-27 04:15:30,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:30,183 INFO L93 Difference]: Finished difference Result 257 states and 405 transitions. [2020-10-27 04:15:30,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:15:30,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-27 04:15:30,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:30,198 INFO L225 Difference]: With dead ends: 257 [2020-10-27 04:15:30,199 INFO L226 Difference]: Without dead ends: 157 [2020-10-27 04:15:30,203 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 04:15:30,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-27 04:15:30,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 145. [2020-10-27 04:15:30,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-27 04:15:30,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 232 transitions. [2020-10-27 04:15:30,269 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 232 transitions. Word has length 59 [2020-10-27 04:15:30,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:30,270 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 232 transitions. [2020-10-27 04:15:30,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:15:30,270 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 232 transitions. [2020-10-27 04:15:30,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 04:15:30,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:30,274 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 04:15:30,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:15:30,275 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:30,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:30,276 INFO L82 PathProgramCache]: Analyzing trace with hash -359507190, now seen corresponding path program 1 times [2020-10-27 04:15:30,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:30,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844258577] [2020-10-27 04:15:30,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:30,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:30,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:30,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 04:15:30,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:30,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-27 04:15:30,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:30,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:15:30,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 04:15:30,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:15:30,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:31,306 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:15:31,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:31,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:31,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:31,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:31,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:31,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:15:31,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:31,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:31,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:15:31,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:15:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:31,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:31,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:31,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:15:31,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:31,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 04:15:31,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:31,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:15:31,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:31,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:15:31,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:31,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 04:15:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:31,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:31,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:31,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:15:31,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:31,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:15:31,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:31,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:31,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:15:31,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:31,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:31,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:15:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:31,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:31,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:31,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:15:31,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:31,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:15:31,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:15:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:31,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:31,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 04:15:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:31,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:31,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:31,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:15:31,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:31,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:15:31,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:15:31,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:31,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:31,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:15:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:31,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:31,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:31,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:15:31,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:31,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:15:31,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:31,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:31,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:15:31,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:31,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:31,636 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 04:15:31,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844258577] [2020-10-27 04:15:31,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:15:31,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:15:31,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150743097] [2020-10-27 04:15:31,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:15:31,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:31,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:15:31,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:15:31,640 INFO L87 Difference]: Start difference. First operand 145 states and 232 transitions. Second operand 10 states. [2020-10-27 04:15:32,265 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:15:32,606 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:15:34,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:34,149 INFO L93 Difference]: Finished difference Result 258 states and 404 transitions. [2020-10-27 04:15:34,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 04:15:34,150 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-27 04:15:34,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:34,153 INFO L225 Difference]: With dead ends: 258 [2020-10-27 04:15:34,154 INFO L226 Difference]: Without dead ends: 166 [2020-10-27 04:15:34,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:15:34,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-27 04:15:34,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 145. [2020-10-27 04:15:34,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-27 04:15:34,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 211 transitions. [2020-10-27 04:15:34,183 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 211 transitions. Word has length 59 [2020-10-27 04:15:34,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:34,183 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 211 transitions. [2020-10-27 04:15:34,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:15:34,184 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 211 transitions. [2020-10-27 04:15:34,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 04:15:34,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:34,187 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 04:15:34,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:15:34,187 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:34,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:34,188 INFO L82 PathProgramCache]: Analyzing trace with hash 547360494, now seen corresponding path program 1 times [2020-10-27 04:15:34,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:34,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923226310] [2020-10-27 04:15:34,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:34,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:34,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:34,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:35,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:39,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:39,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 04:15:39,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:39,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:15:39,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:39,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:15:39,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 04:15:39,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 04:15:39,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:15:39,535 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:15:39,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:39,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:39,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:39,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:39,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:39,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:15:39,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:39,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:39,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:39,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:39,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:39,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:15:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:39,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:39,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:39,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:15:39,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:39,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 04:15:39,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:39,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:15:39,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:39,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 04:15:39,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:39,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 04:15:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:39,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:39,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:39,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:15:39,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:39,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:15:39,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:39,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:15:39,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:15:39,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:15:39,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:39,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:15:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:39,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:39,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:39,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:15:39,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:39,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:15:39,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:39,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:39,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:15:39,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:39,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:39,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:15:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:39,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:39,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:39,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:15:39,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:39,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:15:39,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:39,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:39,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:15:39,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:39,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:39,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 04:15:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:39,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:39,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:39,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:15:39,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:39,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:39,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:15:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:39,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:39,824 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 04:15:39,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923226310] [2020-10-27 04:15:39,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:15:39,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:15:39,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805291490] [2020-10-27 04:15:39,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:15:39,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:39,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:15:39,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:15:39,832 INFO L87 Difference]: Start difference. First operand 145 states and 211 transitions. Second operand 9 states. [2020-10-27 04:15:40,139 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 04:15:42,226 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:15:42,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:42,756 INFO L93 Difference]: Finished difference Result 344 states and 517 transitions. [2020-10-27 04:15:42,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:15:42,757 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-10-27 04:15:42,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:42,767 INFO L225 Difference]: With dead ends: 344 [2020-10-27 04:15:42,767 INFO L226 Difference]: Without dead ends: 258 [2020-10-27 04:15:42,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:15:42,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-27 04:15:42,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 221. [2020-10-27 04:15:42,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-27 04:15:42,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 324 transitions. [2020-10-27 04:15:42,813 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 324 transitions. Word has length 79 [2020-10-27 04:15:42,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:42,813 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 324 transitions. [2020-10-27 04:15:42,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:15:42,814 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 324 transitions. [2020-10-27 04:15:42,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 04:15:42,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:42,817 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 04:15:42,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:15:42,817 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:42,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:42,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1097662175, now seen corresponding path program 1 times [2020-10-27 04:15:42,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:42,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640032077] [2020-10-27 04:15:42,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:42,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:42,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:42,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:43,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:44,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:47,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:47,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 04:15:47,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:15:47,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 04:15:47,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:47,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:15:47,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:15:47,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:15:47,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:15:48,198 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:15:48,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:48,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:48,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:48,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:48,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:48,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:15:48,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:48,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:48,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:48,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:48,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:48,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:15:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:48,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:48,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:48,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:15:48,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:48,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 04:15:48,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:48,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:15:48,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:48,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:15:48,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:48,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 04:15:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:48,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:48,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:48,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:15:48,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:48,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:15:48,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:15:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:15:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:15:48,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:48,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 04:15:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:48,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:48,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:48,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:15:48,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:48,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:15:48,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:48,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:48,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:15:48,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:48,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:48,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:15:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:48,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:48,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:48,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:15:48,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:48,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:15:48,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:48,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:48,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:15:48,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:48,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:48,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 04:15:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:48,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:48,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:48,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:15:48,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:48,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:48,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:48,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:48,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:15:48,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:48,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:48,587 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 04:15:48,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640032077] [2020-10-27 04:15:48,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:15:48,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:15:48,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318439366] [2020-10-27 04:15:48,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:15:48,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:48,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:15:48,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:15:48,591 INFO L87 Difference]: Start difference. First operand 221 states and 324 transitions. Second operand 9 states. [2020-10-27 04:15:48,930 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:15:49,290 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:15:49,658 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:15:50,511 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-27 04:15:51,376 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:15:54,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:54,364 INFO L93 Difference]: Finished difference Result 800 states and 1185 transitions. [2020-10-27 04:15:54,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:15:54,365 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 81 [2020-10-27 04:15:54,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:54,370 INFO L225 Difference]: With dead ends: 800 [2020-10-27 04:15:54,370 INFO L226 Difference]: Without dead ends: 602 [2020-10-27 04:15:54,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:15:54,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-10-27 04:15:54,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 543. [2020-10-27 04:15:54,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-10-27 04:15:54,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 794 transitions. [2020-10-27 04:15:54,450 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 794 transitions. Word has length 81 [2020-10-27 04:15:54,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:54,450 INFO L481 AbstractCegarLoop]: Abstraction has 543 states and 794 transitions. [2020-10-27 04:15:54,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:15:54,451 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 794 transitions. [2020-10-27 04:15:54,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 04:15:54,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:54,454 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 04:15:54,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:15:54,454 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:54,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:54,455 INFO L82 PathProgramCache]: Analyzing trace with hash -831936087, now seen corresponding path program 1 times [2020-10-27 04:15:54,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:54,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815792862] [2020-10-27 04:15:54,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:54,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:54,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:54,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:54,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:54,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:58,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:59,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:59,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 04:15:59,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:15:59,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:15:59,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:59,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:15:59,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:15:59,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:15:59,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:59,818 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:15:59,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:59,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:59,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:59,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:59,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:59,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:15:59,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:59,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:59,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:15:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:59,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:59,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:59,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:15:59,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:59,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 04:15:59,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:15:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:15:59,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:00,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 04:16:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:00,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:00,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:00,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:16:00,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:00,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:16:00,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:00,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:16:00,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:16:00,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:16:00,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:00,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 04:16:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:00,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:00,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:00,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:00,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:00,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:16:00,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:00,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:00,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:00,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:00,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:00,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:16:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:00,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:00,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:00,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:00,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:00,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:16:00,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:00,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:00,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 04:16:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:00,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:00,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:00,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:00,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:00,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:16:00,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:00,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:00,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:00,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:00,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:00,212 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 04:16:00,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815792862] [2020-10-27 04:16:00,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:16:00,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:16:00,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867707389] [2020-10-27 04:16:00,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:16:00,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:00,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:16:00,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:16:00,215 INFO L87 Difference]: Start difference. First operand 543 states and 794 transitions. Second operand 9 states. [2020-10-27 04:16:00,533 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:16:00,836 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:16:01,244 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:16:02,065 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-27 04:16:02,843 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:16:05,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:05,693 INFO L93 Difference]: Finished difference Result 1807 states and 2641 transitions. [2020-10-27 04:16:05,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:16:05,694 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 81 [2020-10-27 04:16:05,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:05,703 INFO L225 Difference]: With dead ends: 1807 [2020-10-27 04:16:05,703 INFO L226 Difference]: Without dead ends: 1311 [2020-10-27 04:16:05,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:16:05,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2020-10-27 04:16:05,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1215. [2020-10-27 04:16:05,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1215 states. [2020-10-27 04:16:05,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1754 transitions. [2020-10-27 04:16:05,840 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1754 transitions. Word has length 81 [2020-10-27 04:16:05,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:05,841 INFO L481 AbstractCegarLoop]: Abstraction has 1215 states and 1754 transitions. [2020-10-27 04:16:05,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:16:05,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1754 transitions. [2020-10-27 04:16:05,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 04:16:05,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:05,845 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 04:16:05,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:16:05,846 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:05,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:05,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1777229005, now seen corresponding path program 1 times [2020-10-27 04:16:05,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:05,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328905442] [2020-10-27 04:16:05,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:05,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:05,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:05,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:06,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:06,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:10,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:10,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 04:16:10,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:16:10,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 04:16:10,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:16:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:16:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 04:16:10,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:11,190 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:16:11,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:11,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:11,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:11,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:11,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:11,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:16:11,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:11,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:16:11,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:11,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:16:11,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:11,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:16:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:11,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:11,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:11,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:16:11,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:11,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 04:16:11,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:11,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:16:11,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:11,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 04:16:11,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:11,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 04:16:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:11,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:11,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:11,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:16:11,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:11,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 04:16:11,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:11,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:16:11,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:16:11,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:16:11,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:11,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 04:16:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:11,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:11,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:11,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:11,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:11,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:16:11,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:11,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:11,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:11,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:11,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:11,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:16:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:11,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:11,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:11,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:11,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:11,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:16:11,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:11,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:11,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:11,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:11,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:11,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:16:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:11,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:11,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:11,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:11,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:11,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:16:11,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:11,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:11,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:11,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:11,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:11,568 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 04:16:11,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328905442] [2020-10-27 04:16:11,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:16:11,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:16:11,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131737623] [2020-10-27 04:16:11,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:16:11,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:11,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:16:11,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:16:11,571 INFO L87 Difference]: Start difference. First operand 1215 states and 1754 transitions. Second operand 14 states. [2020-10-27 04:16:11,962 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:16:12,263 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:16:12,857 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:16:13,365 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:16:13,805 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-27 04:16:14,039 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-27 04:16:16,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:16,196 INFO L93 Difference]: Finished difference Result 2172 states and 3211 transitions. [2020-10-27 04:16:16,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:16:16,196 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 82 [2020-10-27 04:16:16,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:16,210 INFO L225 Difference]: With dead ends: 2172 [2020-10-27 04:16:16,210 INFO L226 Difference]: Without dead ends: 1925 [2020-10-27 04:16:16,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=253, Invalid=677, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:16:16,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2020-10-27 04:16:16,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 1384. [2020-10-27 04:16:16,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1384 states. [2020-10-27 04:16:16,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2003 transitions. [2020-10-27 04:16:16,358 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2003 transitions. Word has length 82 [2020-10-27 04:16:16,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:16,359 INFO L481 AbstractCegarLoop]: Abstraction has 1384 states and 2003 transitions. [2020-10-27 04:16:16,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:16:16,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2003 transitions. [2020-10-27 04:16:16,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 04:16:16,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:16,367 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 04:16:16,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:16:16,367 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:16,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:16,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1816138417, now seen corresponding path program 1 times [2020-10-27 04:16:16,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:16,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006087384] [2020-10-27 04:16:16,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:16,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:16,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:16,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:16,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:18,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:21,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:21,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 04:16:21,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:16:21,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:16:21,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:16:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:16:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:16:21,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:21,811 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:16:21,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:21,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:21,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:21,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:21,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:21,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:16:21,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:21,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:21,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:21,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:21,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:16:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:21,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:21,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:21,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:16:21,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:21,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 04:16:21,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:21,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:16:21,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:21,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:16:21,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:22,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 04:16:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:22,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:22,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:22,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:16:22,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:22,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:16:22,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:22,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:16:22,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:16:22,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:16:22,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:22,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 04:16:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:22,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:22,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:22,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:22,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:22,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:16:22,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:22,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:22,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:22,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:22,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:22,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:16:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:22,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:22,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:22,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:22,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:22,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:16:22,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:22,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:22,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:22,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:22,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:22,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:16:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:22,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:22,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:22,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:22,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:22,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:16:22,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:22,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:22,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:22,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:22,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:22,231 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 04:16:22,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006087384] [2020-10-27 04:16:22,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:16:22,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:16:22,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528301756] [2020-10-27 04:16:22,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:16:22,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:22,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:16:22,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:16:22,244 INFO L87 Difference]: Start difference. First operand 1384 states and 2003 transitions. Second operand 9 states. [2020-10-27 04:16:22,554 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:16:22,912 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:16:23,361 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:16:23,995 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-27 04:16:24,999 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:16:27,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:27,980 INFO L93 Difference]: Finished difference Result 4919 states and 7086 transitions. [2020-10-27 04:16:27,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:16:27,984 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-27 04:16:27,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:28,005 INFO L225 Difference]: With dead ends: 4919 [2020-10-27 04:16:28,006 INFO L226 Difference]: Without dead ends: 3604 [2020-10-27 04:16:28,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:16:28,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3604 states. [2020-10-27 04:16:28,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3604 to 3421. [2020-10-27 04:16:28,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3421 states. [2020-10-27 04:16:28,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3421 states to 3421 states and 4841 transitions. [2020-10-27 04:16:28,328 INFO L78 Accepts]: Start accepts. Automaton has 3421 states and 4841 transitions. Word has length 82 [2020-10-27 04:16:28,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:28,330 INFO L481 AbstractCegarLoop]: Abstraction has 3421 states and 4841 transitions. [2020-10-27 04:16:28,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:16:28,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3421 states and 4841 transitions. [2020-10-27 04:16:28,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 04:16:28,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:28,342 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 04:16:28,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:16:28,343 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:28,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:28,343 INFO L82 PathProgramCache]: Analyzing trace with hash 2111056532, now seen corresponding path program 1 times [2020-10-27 04:16:28,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:28,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103559227] [2020-10-27 04:16:28,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:28,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:28,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:28,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:28,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:29,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:33,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:33,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 04:16:33,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:16:33,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:16:33,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:33,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:16:33,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:16:33,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:16:33,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:33,659 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:16:33,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:33,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:33,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:33,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:33,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:33,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:16:33,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:33,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:33,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:33,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:33,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:33,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:16:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:33,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:33,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:33,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:33,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 04:16:33,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:33,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 04:16:33,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:33,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:16:33,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:16:33,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:33,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 04:16:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:33,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:33,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:33,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:16:33,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:33,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:16:33,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:33,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:16:33,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:16:33,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:16:33,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:33,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 04:16:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:33,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:33,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:33,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:33,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:33,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:16:33,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:33,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:33,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:33,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:33,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:33,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:16:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:33,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:33,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:33,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:33,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:33,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:16:33,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:33,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:33,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:33,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:33,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:33,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:16:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:33,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:33,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:33,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:33,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:33,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:16:33,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:33,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:34,025 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 04:16:34,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103559227] [2020-10-27 04:16:34,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:16:34,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:16:34,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25785544] [2020-10-27 04:16:34,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:16:34,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:34,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:16:34,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:16:34,028 INFO L87 Difference]: Start difference. First operand 3421 states and 4841 transitions. Second operand 9 states. [2020-10-27 04:16:34,339 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:16:34,680 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:16:35,048 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:16:36,001 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-27 04:16:36,672 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:16:39,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:39,821 INFO L93 Difference]: Finished difference Result 10718 states and 15421 transitions. [2020-10-27 04:16:39,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:16:39,822 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-27 04:16:39,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:39,867 INFO L225 Difference]: With dead ends: 10718 [2020-10-27 04:16:39,868 INFO L226 Difference]: Without dead ends: 8039 [2020-10-27 04:16:39,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:16:39,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8039 states. [2020-10-27 04:16:40,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8039 to 7863. [2020-10-27 04:16:40,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7863 states. [2020-10-27 04:16:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7863 states to 7863 states and 11035 transitions. [2020-10-27 04:16:40,535 INFO L78 Accepts]: Start accepts. Automaton has 7863 states and 11035 transitions. Word has length 82 [2020-10-27 04:16:40,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:40,535 INFO L481 AbstractCegarLoop]: Abstraction has 7863 states and 11035 transitions. [2020-10-27 04:16:40,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:16:40,535 INFO L276 IsEmpty]: Start isEmpty. Operand 7863 states and 11035 transitions. [2020-10-27 04:16:40,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 04:16:40,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:40,555 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 04:16:40,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:16:40,556 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:40,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:40,556 INFO L82 PathProgramCache]: Analyzing trace with hash 117203830, now seen corresponding path program 1 times [2020-10-27 04:16:40,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:40,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596245939] [2020-10-27 04:16:40,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:40,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:40,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:40,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:40,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:42,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:45,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:45,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 04:16:45,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:16:45,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 04:16:45,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:45,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:16:45,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 04:16:45,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:16:45,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:45,860 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:16:45,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:45,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:45,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:45,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:45,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:45,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:16:45,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:45,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:45,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:45,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:45,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:16:45,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:16:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:45,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:45,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:45,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 04:16:45,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:45,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:16:45,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:45,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:16:45,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:16:45,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:16:45,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:45,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 04:16:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:45,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:45,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:45,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:16:45,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:45,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:16:45,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:45,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:45,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:16:45,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:45,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:46,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:16:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:46,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:46,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:46,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:46,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:46,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:16:46,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:46,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:46,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:16:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:46,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:46,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:46,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:46,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:46,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:16:46,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:46,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:46,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:46,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:46,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:46,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:16:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:46,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:46,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:46,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:46,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:46,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:16:46,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:46,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:46,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:46,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:46,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:46,074 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 04:16:46,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596245939] [2020-10-27 04:16:46,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:16:46,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 04:16:46,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387965410] [2020-10-27 04:16:46,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:16:46,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:46,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:16:46,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:16:46,076 INFO L87 Difference]: Start difference. First operand 7863 states and 11035 transitions. Second operand 7 states. [2020-10-27 04:16:46,524 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:16:48,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:48,232 INFO L93 Difference]: Finished difference Result 15506 states and 21528 transitions. [2020-10-27 04:16:48,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:16:48,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-10-27 04:16:48,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:48,284 INFO L225 Difference]: With dead ends: 15506 [2020-10-27 04:16:48,284 INFO L226 Difference]: Without dead ends: 8903 [2020-10-27 04:16:48,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:16:48,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8903 states. [2020-10-27 04:16:48,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8903 to 7899. [2020-10-27 04:16:48,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7899 states. [2020-10-27 04:16:48,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7899 states to 7899 states and 11063 transitions. [2020-10-27 04:16:48,966 INFO L78 Accepts]: Start accepts. Automaton has 7899 states and 11063 transitions. Word has length 83 [2020-10-27 04:16:48,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:48,966 INFO L481 AbstractCegarLoop]: Abstraction has 7899 states and 11063 transitions. [2020-10-27 04:16:48,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:16:48,966 INFO L276 IsEmpty]: Start isEmpty. Operand 7899 states and 11063 transitions. [2020-10-27 04:16:48,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 04:16:48,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:48,986 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 04:16:48,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:16:48,986 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:48,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:48,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1259050059, now seen corresponding path program 1 times [2020-10-27 04:16:48,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:48,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080077242] [2020-10-27 04:16:48,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:49,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:49,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:49,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:49,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:53,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:53,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 04:16:53,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:53,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4062 [2020-10-27 04:16:53,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:53,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:16:53,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 04:16:53,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:16:53,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:53,372 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:16:53,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:53,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:53,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:53,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:53,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:53,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 04:16:53,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:53,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:53,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:53,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:53,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:53,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:16:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:53,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:53,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:53,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:16:53,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:53,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:16:53,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:53,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:16:53,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:53,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:16:53,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:53,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 04:16:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:53,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:53,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:53,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:16:53,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:53,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:16:53,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:53,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:16:53,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:53,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:16:53,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:53,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:16:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:53,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:53,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:53,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:53,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:53,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:16:53,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:16:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:16:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:16:53,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:53,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:16:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:53,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:53,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:53,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:53,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:53,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:16:53,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:53,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:53,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:53,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:53,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:53,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:16:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:53,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:53,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:53,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:53,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:53,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:16:53,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:53,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:53,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:53,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:53,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:53,631 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 04:16:53,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080077242] [2020-10-27 04:16:53,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:16:53,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:16:53,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820921596] [2020-10-27 04:16:53,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:16:53,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:53,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:16:53,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:16:53,633 INFO L87 Difference]: Start difference. First operand 7899 states and 11063 transitions. Second operand 9 states. [2020-10-27 04:16:53,947 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 04:16:56,563 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 04:16:56,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:56,927 INFO L93 Difference]: Finished difference Result 16849 states and 24095 transitions. [2020-10-27 04:16:56,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:16:56,927 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-10-27 04:16:56,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:56,976 INFO L225 Difference]: With dead ends: 16849 [2020-10-27 04:16:56,976 INFO L226 Difference]: Without dead ends: 11581 [2020-10-27 04:16:56,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:16:57,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11581 states. [2020-10-27 04:16:57,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11581 to 11303. [2020-10-27 04:16:57,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11303 states. [2020-10-27 04:16:57,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11303 states to 11303 states and 15880 transitions. [2020-10-27 04:16:57,710 INFO L78 Accepts]: Start accepts. Automaton has 11303 states and 15880 transitions. Word has length 83 [2020-10-27 04:16:57,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:57,711 INFO L481 AbstractCegarLoop]: Abstraction has 11303 states and 15880 transitions. [2020-10-27 04:16:57,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:16:57,711 INFO L276 IsEmpty]: Start isEmpty. Operand 11303 states and 15880 transitions. [2020-10-27 04:16:57,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 04:16:57,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:57,737 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 04:16:57,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:16:57,737 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:57,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:57,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1411697791, now seen corresponding path program 1 times [2020-10-27 04:16:57,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:57,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349260240] [2020-10-27 04:16:57,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:57,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:57,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:57,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:58,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:58,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:02,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:02,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 04:17:02,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:17:02,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4439 [2020-10-27 04:17:02,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:02,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:17:02,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:17:02,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 04:17:02,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:02,492 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:17:02,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:02,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:02,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:02,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:02,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:02,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:17:02,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:02,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:02,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:02,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:02,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:02,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:17:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:02,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:02,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:02,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:02,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 04:17:02,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:02,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 04:17:02,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:02,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:17:02,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:02,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:17:02,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:02,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 04:17:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:02,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:02,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:02,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:17:02,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:02,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:17:02,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:02,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:17:02,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:02,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:17:02,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:02,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:17:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:02,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:02,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:02,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:17:02,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:02,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:17:02,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:17:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:17:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:17:02,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:02,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:17:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:02,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:02,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:02,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:02,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:02,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:17:02,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:02,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:02,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:17:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:02,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:02,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:02,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:02,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:02,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:17:02,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:02,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:02,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:02,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:02,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:02,810 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 04:17:02,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349260240] [2020-10-27 04:17:02,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:17:02,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:17:02,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898512394] [2020-10-27 04:17:02,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:17:02,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:02,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:17:02,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:17:02,812 INFO L87 Difference]: Start difference. First operand 11303 states and 15880 transitions. Second operand 9 states. [2020-10-27 04:17:03,142 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:17:03,488 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:17:03,913 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:17:04,634 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-27 04:17:05,758 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:17:10,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:10,006 INFO L93 Difference]: Finished difference Result 36642 states and 52573 transitions. [2020-10-27 04:17:10,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:17:10,007 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-10-27 04:17:10,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:10,130 INFO L225 Difference]: With dead ends: 36642 [2020-10-27 04:17:10,130 INFO L226 Difference]: Without dead ends: 26848 [2020-10-27 04:17:10,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:17:10,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26848 states. [2020-10-27 04:17:12,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26848 to 26398. [2020-10-27 04:17:12,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26398 states. [2020-10-27 04:17:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26398 states to 26398 states and 37084 transitions. [2020-10-27 04:17:12,561 INFO L78 Accepts]: Start accepts. Automaton has 26398 states and 37084 transitions. Word has length 85 [2020-10-27 04:17:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:12,562 INFO L481 AbstractCegarLoop]: Abstraction has 26398 states and 37084 transitions. [2020-10-27 04:17:12,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:17:12,562 INFO L276 IsEmpty]: Start isEmpty. Operand 26398 states and 37084 transitions. [2020-10-27 04:17:12,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 04:17:12,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:12,599 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 04:17:12,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:17:12,600 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:12,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:12,600 INFO L82 PathProgramCache]: Analyzing trace with hash -56651962, now seen corresponding path program 1 times [2020-10-27 04:17:12,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:12,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559803207] [2020-10-27 04:17:12,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:12,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:12,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:12,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:12,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:17,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:17,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 04:17:17,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:17:17,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4400 [2020-10-27 04:17:17,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:17,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:17:17,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:17:17,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 04:17:17,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:17,363 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:17:17,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:17,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:17,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:17,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:17,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:17,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:17:17,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:17,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:17,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:17:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:17,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:17,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:17,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 04:17:17,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:17,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:17:17,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:17,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:17:17,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:17,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:17:17,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:17,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:17:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:17,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:17,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:17,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:17:17,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:17,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:17:17,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:17,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:17:17,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:17,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:17:17,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:17,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:17:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:17,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:17,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:17,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:17:17,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:17,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:17:17,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:17,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:17:17,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:17:17,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:17:17,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:17,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:17:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:17,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:17,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:17,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:17,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:17,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:17:17,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:17,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:17,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:17,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:17,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:17,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:17:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:17,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:17,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:17,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:17,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:17,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:17:17,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:17,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:17,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:17,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:17,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:17,693 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 04:17:17,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559803207] [2020-10-27 04:17:17,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:17:17,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:17:17,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164712186] [2020-10-27 04:17:17,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:17:17,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:17,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:17:17,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:17:17,696 INFO L87 Difference]: Start difference. First operand 26398 states and 37084 transitions. Second operand 9 states. [2020-10-27 04:17:18,027 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:17:18,384 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:17:19,069 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-27 04:17:19,432 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:17:20,592 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:17:26,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:26,655 INFO L93 Difference]: Finished difference Result 80519 states and 115330 transitions. [2020-10-27 04:17:26,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:17:26,656 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-10-27 04:17:26,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:26,897 INFO L225 Difference]: With dead ends: 80519 [2020-10-27 04:17:26,897 INFO L226 Difference]: Without dead ends: 58422 [2020-10-27 04:17:26,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:17:27,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58422 states. [2020-10-27 04:17:31,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58422 to 57772. [2020-10-27 04:17:31,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57772 states. [2020-10-27 04:17:31,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57772 states to 57772 states and 80827 transitions. [2020-10-27 04:17:31,634 INFO L78 Accepts]: Start accepts. Automaton has 57772 states and 80827 transitions. Word has length 85 [2020-10-27 04:17:31,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:31,634 INFO L481 AbstractCegarLoop]: Abstraction has 57772 states and 80827 transitions. [2020-10-27 04:17:31,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:17:31,634 INFO L276 IsEmpty]: Start isEmpty. Operand 57772 states and 80827 transitions. [2020-10-27 04:17:31,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 04:17:31,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:31,843 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] [2020-10-27 04:17:31,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:17:31,844 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:31,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:31,844 INFO L82 PathProgramCache]: Analyzing trace with hash 291902518, now seen corresponding path program 1 times [2020-10-27 04:17:31,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:31,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960300548] [2020-10-27 04:17:31,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:31,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:31,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:32,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:33,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:33,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 04:17:33,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:17:33,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1427 [2020-10-27 04:17:33,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:33,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:17:33,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 04:17:33,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:17:33,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:33,592 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:17:33,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:33,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:33,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:33,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:33,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:33,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:17:33,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:33,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:33,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:33,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:33,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:33,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:17:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:33,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:33,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:33,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 04:17:33,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:33,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:17:33,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:33,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:17:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 04:17:33,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:33,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:17:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:33,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:33,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:33,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:17:33,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:33,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:17:33,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:33,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:17:33,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:33,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:17:33,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:33,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:17:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:33,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:33,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:33,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:17:33,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:33,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:17:33,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:33,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:17:33,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:33,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:17:33,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:33,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 04:17:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:33,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:33,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:33,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:33,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:33,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:17:33,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:33,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:17:33,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:17:33,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:17:33,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:33,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:17:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:33,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:33,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:33,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:33,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:33,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:17:33,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:33,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:33,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:33,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:33,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:33,837 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 04:17:33,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960300548] [2020-10-27 04:17:33,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:17:33,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:17:33,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640353040] [2020-10-27 04:17:33,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:17:33,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:33,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:17:33,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:17:33,839 INFO L87 Difference]: Start difference. First operand 57772 states and 80827 transitions. Second operand 9 states. [2020-10-27 04:17:34,163 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 04:17:39,784 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:17:41,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:41,559 INFO L93 Difference]: Finished difference Result 124921 states and 175183 transitions. [2020-10-27 04:17:41,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:17:41,559 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-10-27 04:17:41,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:42,051 INFO L225 Difference]: With dead ends: 124921 [2020-10-27 04:17:42,051 INFO L226 Difference]: Without dead ends: 78770 [2020-10-27 04:17:42,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:17:42,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78770 states. [2020-10-27 04:17:48,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78770 to 78079. [2020-10-27 04:17:48,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78079 states. [2020-10-27 04:17:48,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78079 states to 78079 states and 107609 transitions. [2020-10-27 04:17:48,647 INFO L78 Accepts]: Start accepts. Automaton has 78079 states and 107609 transitions. Word has length 86 [2020-10-27 04:17:48,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:48,647 INFO L481 AbstractCegarLoop]: Abstraction has 78079 states and 107609 transitions. [2020-10-27 04:17:48,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:17:48,647 INFO L276 IsEmpty]: Start isEmpty. Operand 78079 states and 107609 transitions. [2020-10-27 04:17:48,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 04:17:48,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:48,708 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 04:17:48,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:17:48,708 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:48,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:48,709 INFO L82 PathProgramCache]: Analyzing trace with hash -2099777612, now seen corresponding path program 1 times [2020-10-27 04:17:48,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:48,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186827154] [2020-10-27 04:17:48,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:48,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:48,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:48,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:50,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:50,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 04:17:50,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:17:50,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1694 [2020-10-27 04:17:50,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:50,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:17:50,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 04:17:50,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:17:50,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:50,749 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:17:50,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:50,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:50,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:50,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:50,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:50,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:17:50,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:50,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:50,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:17:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:50,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:50,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:50,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 04:17:50,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:50,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 04:17:50,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:50,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:17:50,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:50,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:17:50,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:50,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:17:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:50,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:50,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:50,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:17:50,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:50,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:17:50,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:50,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:17:50,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:17:50,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:17:50,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:50,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:17:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:50,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:50,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:50,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:17:50,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:50,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:17:50,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:50,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:17:50,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:17:50,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:17:50,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:51,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:17:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:51,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:51,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:51,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:17:51,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:51,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:17:51,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:51,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:17:51,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:17:51,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:17:51,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:51,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:17:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:51,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:51,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:51,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:51,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:51,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:17:51,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:17:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:17:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:17:51,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:51,160 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 04:17:51,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186827154] [2020-10-27 04:17:51,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:17:51,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:17:51,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296939583] [2020-10-27 04:17:51,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:17:51,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:51,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:17:51,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:17:51,163 INFO L87 Difference]: Start difference. First operand 78079 states and 107609 transitions. Second operand 14 states. [2020-10-27 04:17:51,495 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:17:52,144 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 04:17:52,465 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:17:54,090 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-27 04:17:56,256 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:17:56,582 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:17:57,009 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 04:18:05,395 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 04:18:10,091 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-27 04:18:18,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:18,327 INFO L93 Difference]: Finished difference Result 350578 states and 496816 transitions. [2020-10-27 04:18:18,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-27 04:18:18,328 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2020-10-27 04:18:18,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:20,247 INFO L225 Difference]: With dead ends: 350578 [2020-10-27 04:18:20,247 INFO L226 Difference]: Without dead ends: 286539 [2020-10-27 04:18:20,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=595, Invalid=2057, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 04:18:20,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286539 states. [2020-10-27 04:18:40,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286539 to 276691. [2020-10-27 04:18:40,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276691 states. [2020-10-27 04:18:41,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276691 states to 276691 states and 386893 transitions. [2020-10-27 04:18:41,992 INFO L78 Accepts]: Start accepts. Automaton has 276691 states and 386893 transitions. Word has length 89 [2020-10-27 04:18:41,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:41,993 INFO L481 AbstractCegarLoop]: Abstraction has 276691 states and 386893 transitions. [2020-10-27 04:18:41,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:18:41,993 INFO L276 IsEmpty]: Start isEmpty. Operand 276691 states and 386893 transitions. [2020-10-27 04:18:42,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 04:18:42,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:42,170 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] [2020-10-27 04:18:42,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:18:42,171 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:42,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:42,171 INFO L82 PathProgramCache]: Analyzing trace with hash -29580476, now seen corresponding path program 1 times [2020-10-27 04:18:42,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:42,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360263844] [2020-10-27 04:18:42,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:42,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:42,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:42,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:42,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:46,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:46,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 04:18:46,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:18:46,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4674 [2020-10-27 04:18:46,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:46,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:18:46,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 04:18:46,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:18:46,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:47,182 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:47,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:47,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:47,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:47,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:47,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:47,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:18:47,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:47,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:47,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:47,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:47,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:47,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:47,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:47,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:47,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 04:18:47,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:47,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:18:47,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:47,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:47,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:47,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:18:47,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:47,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:18:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:47,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:47,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:47,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:18:47,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:47,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:18:47,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:47,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:18:47,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:18:47,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:18:47,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:47,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:18:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:47,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:47,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:47,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:18:47,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:47,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:18:47,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:47,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:47,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:18:47,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:47,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:47,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 04:18:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:47,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:47,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:47,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:18:47,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:47,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:47,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:47,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:47,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:18:47,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:47,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:47,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 04:18:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:47,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:47,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:47,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:47,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:47,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:18:47,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:47,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:47,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:47,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:47,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:47,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:18:47,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360263844] [2020-10-27 04:18:47,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:47,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:18:47,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212200144] [2020-10-27 04:18:47,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:18:47,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:47,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:18:47,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:18:47,459 INFO L87 Difference]: Start difference. First operand 276691 states and 386893 transitions. Second operand 9 states. [2020-10-27 04:18:47,809 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:18:51,764 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 182