/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:13:59,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:13:59,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:13:59,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:13:59,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:13:59,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:13:59,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:13:59,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:13:59,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:13:59,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:13:59,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:13:59,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:13:59,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:13:59,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:13:59,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:13:59,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:13:59,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:13:59,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:13:59,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:13:59,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:13:59,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:13:59,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:13:59,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:13:59,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:13:59,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:13:59,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:13:59,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:13:59,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:13:59,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:13:59,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:13:59,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:13:59,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:13:59,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:13:59,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:13:59,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:13:59,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:13:59,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:13:59,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:13:59,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:13:59,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:13:59,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:13:59,351 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 23:13:59,381 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:13:59,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:13:59,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:13:59,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:13:59,384 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:13:59,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:13:59,384 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:13:59,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:13:59,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:13:59,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:13:59,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:13:59,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:13:59,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:13:59,386 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:13:59,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:13:59,387 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:13:59,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:13:59,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:13:59,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:13:59,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:13:59,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:13:59,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:13:59,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:13:59,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:13:59,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:13:59,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:13:59,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:13:59,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:13:59,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:13:59,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:13:59,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:13:59,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:13:59,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:13:59,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:13:59,882 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:13:59,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c [2020-10-27 23:13:59,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/276cbfb1f/b430920c0e8b4e918641a2f96b7cdbf7/FLAG5fba7c9ec [2020-10-27 23:14:00,694 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:14:00,694 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c [2020-10-27 23:14:00,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/276cbfb1f/b430920c0e8b4e918641a2f96b7cdbf7/FLAG5fba7c9ec [2020-10-27 23:14:00,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/276cbfb1f/b430920c0e8b4e918641a2f96b7cdbf7 [2020-10-27 23:14:00,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:14:00,898 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:14:00,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:14:00,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:14:00,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:14:00,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:14:00" (1/1) ... [2020-10-27 23:14:00,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11b36d27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:00, skipping insertion in model container [2020-10-27 23:14:00,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:14:00" (1/1) ... [2020-10-27 23:14:00,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:14:01,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:14:01,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:14:01,625 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:14:01,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:14:01,829 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:14:01,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:01 WrapperNode [2020-10-27 23:14:01,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:14:01,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:14:01,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:14:01,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:14:01,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:01" (1/1) ... [2020-10-27 23:14:01,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:01" (1/1) ... [2020-10-27 23:14:01,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:01" (1/1) ... [2020-10-27 23:14:01,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:01" (1/1) ... [2020-10-27 23:14:01,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:01" (1/1) ... [2020-10-27 23:14:01,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:01" (1/1) ... [2020-10-27 23:14:02,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:01" (1/1) ... [2020-10-27 23:14:02,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:14:02,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:14:02,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:14:02,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:14:02,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:01" (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 23:14:02,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:14:02,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:14:02,110 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:14:02,110 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:14:02,111 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 23:14:02,111 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 23:14:02,112 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 23:14:02,112 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 23:14:02,112 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-27 23:14:02,113 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 23:14:02,114 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 23:14:02,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:14:02,114 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 23:14:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:14:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:14:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:14:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:14:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:14:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:14:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:14:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:14:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:14:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:14:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:14:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:14:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:14:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:14:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:14:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:14:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:14:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:14:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:14:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:14:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:14:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:14:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:14:02,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:14:04,768 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:14:04,768 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 23:14:04,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:14:04 BoogieIcfgContainer [2020-10-27 23:14:04,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:14:04,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:14:04,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:14:04,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:14:04,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:14:00" (1/3) ... [2020-10-27 23:14:04,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b0b519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:14:04, skipping insertion in model container [2020-10-27 23:14:04,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:01" (2/3) ... [2020-10-27 23:14:04,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b0b519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:14:04, skipping insertion in model container [2020-10-27 23:14:04,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:14:04" (3/3) ... [2020-10-27 23:14:04,782 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c [2020-10-27 23:14:04,796 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:14:04,802 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:14:04,817 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:14:04,851 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:14:04,851 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:14:04,852 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:14:04,852 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:14:04,852 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:14:04,852 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:14:04,852 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:14:04,852 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:14:04,887 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states. [2020-10-27 23:14:04,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 23:14:04,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:14:04,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:14:04,916 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:14:04,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:14:04,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1718594068, now seen corresponding path program 1 times [2020-10-27 23:14:04,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:14:04,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502294837] [2020-10-27 23:14:04,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:14:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:05,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:06,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:06,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 23:14:06,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:06,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1063 [2020-10-27 23:14:06,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:06,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:06,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-27 23:14:06,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:06,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:14:07,811 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:14:07,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:14:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:07,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:07,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:07,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:14:07,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:07,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 23:14:07,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:07,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:07,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:07,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:07,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:07,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:14:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:07,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:08,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:08,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 23:14:08,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:08,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-27 23:14:08,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:08,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:08,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:08,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:08,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:08,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 23:14:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:08,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:08,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:08,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:14:08,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:08,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:14:08,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:14:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:08,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:08,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 23:14:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:08,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:08,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:08,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:08,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:08,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:14:08,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:08,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:08,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:14:08,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:08,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:08,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 23:14:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:08,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:08,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:08,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:08,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:08,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:14:08,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:08,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:08,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:14:08,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:08,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 17 [2020-10-27 23:14:08,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-27 23:14:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:08,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:08,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:08,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:08,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:08,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:14:08,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:08,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:08,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:14:08,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:08,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:08,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 23:14:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:08,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:08,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:08,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:08,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:08,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:14:08,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:08,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:08,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:14:08,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:08,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:08,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-27 23:14:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:08,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:08,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:08,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:08,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:08,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:14:08,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:08,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:08,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:14:08,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:08,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:08,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-27 23:14:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:08,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:08,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:08,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:14:08,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:08,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:14:08,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:08,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:08,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:14:08,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:08,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:08,632 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 23:14:08,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502294837] [2020-10-27 23:14:08,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:14:08,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 23:14:08,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014988695] [2020-10-27 23:14:08,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 23:14:08,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:14:08,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 23:14:08,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:14:08,660 INFO L87 Difference]: Start difference. First operand 777 states. Second operand 8 states. [2020-10-27 23:14:12,191 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:12,958 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:13,867 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:14,655 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:15,519 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:16,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:14:16,731 INFO L93 Difference]: Finished difference Result 1056 states and 1861 transitions. [2020-10-27 23:14:16,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 23:14:16,732 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 188 [2020-10-27 23:14:16,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:14:16,776 INFO L225 Difference]: With dead ends: 1056 [2020-10-27 23:14:16,777 INFO L226 Difference]: Without dead ends: 834 [2020-10-27 23:14:16,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:14:16,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-10-27 23:14:17,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 769. [2020-10-27 23:14:17,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-27 23:14:17,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1388 transitions. [2020-10-27 23:14:17,018 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1388 transitions. Word has length 188 [2020-10-27 23:14:17,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:14:17,019 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 1388 transitions. [2020-10-27 23:14:17,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 23:14:17,020 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1388 transitions. [2020-10-27 23:14:17,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 23:14:17,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:14:17,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:14:17,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:14:17,029 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:14:17,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:14:17,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1274693394, now seen corresponding path program 1 times [2020-10-27 23:14:17,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:14:17,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960760474] [2020-10-27 23:14:17,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:14:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:17,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:20,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:20,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 23:14:20,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:20,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3048 [2020-10-27 23:14:20,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:20,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:14:20,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 23:14:20,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:14:20,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:21,381 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:14:21,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:14:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:21,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:21,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:21,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:14:21,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:21,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 23:14:21,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:21,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:21,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:21,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:21,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:21,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:14:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:21,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:22,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:22,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 23:14:22,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:22,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-27 23:14:22,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:22,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:14:22,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:22,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 23:14:22,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:14:22,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 23:14:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:22,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:22,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:22,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:14:22,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:22,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:14:22,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:14:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 23:14:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:14:22,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:22,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 23:14:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:22,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:22,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:22,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:22,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:22,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:14:22,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:14:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:22,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:22,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 23:14:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:22,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:22,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:22,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:22,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:22,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:14:22,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:22,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:22,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:14:22,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:22,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:22,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-27 23:14:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:22,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:22,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:22,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:22,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:22,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 23:14:22,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:14:22,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:22,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:14:22,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 23:14:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:22,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:22,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:22,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:22,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:22,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:14:22,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:22,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:22,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:14:22,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:22,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:14:22,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-27 23:14:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:22,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:22,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:22,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:22,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:22,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:14:22,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:14:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:22,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:14:22,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-27 23:14:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:22,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:22,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:22,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:14:22,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:22,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:14:22,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:22,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:22,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:14:22,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:22,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:22,871 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 23:14:22,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960760474] [2020-10-27 23:14:22,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:14:22,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 23:14:22,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541194570] [2020-10-27 23:14:22,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 23:14:22,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:14:22,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 23:14:22,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 23:14:22,875 INFO L87 Difference]: Start difference. First operand 769 states and 1388 transitions. Second operand 14 states. [2020-10-27 23:14:33,158 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:14:34,441 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 23:14:35,878 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 23:14:37,111 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 23:14:38,700 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:39,604 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:40,771 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:41,813 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:42,854 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:44,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:14:44,680 INFO L93 Difference]: Finished difference Result 1057 states and 1863 transitions. [2020-10-27 23:14:44,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 23:14:44,681 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 188 [2020-10-27 23:14:44,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:14:44,689 INFO L225 Difference]: With dead ends: 1057 [2020-10-27 23:14:44,690 INFO L226 Difference]: Without dead ends: 845 [2020-10-27 23:14:44,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-27 23:14:44,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2020-10-27 23:14:44,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 769. [2020-10-27 23:14:44,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-27 23:14:44,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1323 transitions. [2020-10-27 23:14:44,867 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1323 transitions. Word has length 188 [2020-10-27 23:14:44,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:14:44,868 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 1323 transitions. [2020-10-27 23:14:44,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 23:14:44,868 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1323 transitions. [2020-10-27 23:14:44,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-27 23:14:44,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:14:44,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:14:44,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:14:44,874 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:14:44,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:14:44,875 INFO L82 PathProgramCache]: Analyzing trace with hash 595284816, now seen corresponding path program 1 times [2020-10-27 23:14:44,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:14:44,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334830531] [2020-10-27 23:14:44,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:14:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:45,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:45,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:46,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:46,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:50,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:50,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-27 23:14:50,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 23:14:50,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 23:14:50,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:14:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-27 23:14:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 23:14:50,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:14:51,298 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:14:51,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:14:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:51,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:51,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:51,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:14:51,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:51,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 23:14:51,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:51,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:51,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:51,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:51,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:51,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:14:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:51,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:51,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:51,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 23:14:51,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:51,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-27 23:14:51,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:14:51,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:51,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-27 23:14:51,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:51,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 23:14:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:51,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:51,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:51,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:14:51,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:51,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:14:51,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:14:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:51,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:14:51,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:14:51,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 23:14:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:51,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:51,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:51,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:51,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:51,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:14:51,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:51,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:14:51,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:51,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:14:51,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:51,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 23:14:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:51,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:51,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:51,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:51,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:51,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:14:51,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:14:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:14:51,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:52,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-27 23:14:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:52,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:52,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:52,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:52,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:52,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:14:52,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:52,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:14:52,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:52,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:14:52,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:52,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-27 23:14:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:52,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:52,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:52,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:52,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:52,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:14:52,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:52,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:14:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:14:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:14:52,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:52,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-27 23:14:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:52,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:52,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:52,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:52,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:52,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:14:52,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:52,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:52,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:14:52,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:52,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:52,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-27 23:14:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:52,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:52,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:52,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:14:52,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:52,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:14:52,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:52,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:52,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:14:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:52,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:52,403 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 23:14:52,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334830531] [2020-10-27 23:14:52,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:14:52,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:14:52,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282415628] [2020-10-27 23:14:52,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:14:52,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:14:52,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:14:52,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:14:52,407 INFO L87 Difference]: Start difference. First operand 769 states and 1323 transitions. Second operand 11 states. [2020-10-27 23:14:53,668 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:15:01,097 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:15:01,910 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:15:02,856 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:15:03,742 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:04,531 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:15:05,195 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:15:05,521 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:07,560 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:08,200 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:08,876 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:10,424 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:15:10,773 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:15:11,252 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:15:11,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:15:11,305 INFO L93 Difference]: Finished difference Result 1304 states and 2208 transitions. [2020-10-27 23:15:11,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 23:15:11,305 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 252 [2020-10-27 23:15:11,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:15:11,314 INFO L225 Difference]: With dead ends: 1304 [2020-10-27 23:15:11,314 INFO L226 Difference]: Without dead ends: 1098 [2020-10-27 23:15:11,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:15:11,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2020-10-27 23:15:11,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 962. [2020-10-27 23:15:11,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2020-10-27 23:15:11,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1641 transitions. [2020-10-27 23:15:11,532 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1641 transitions. Word has length 252 [2020-10-27 23:15:11,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:15:11,534 INFO L481 AbstractCegarLoop]: Abstraction has 962 states and 1641 transitions. [2020-10-27 23:15:11,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:15:11,534 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1641 transitions. [2020-10-27 23:15:11,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-27 23:15:11,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:15:11,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:15:11,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:15:11,541 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:15:11,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:15:11,542 INFO L82 PathProgramCache]: Analyzing trace with hash 295384056, now seen corresponding path program 1 times [2020-10-27 23:15:11,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:15:11,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217036069] [2020-10-27 23:15:11,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:15:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:11,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:11,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:12,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:13,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:14,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:15,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:15,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:16,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:16,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-27 23:15:16,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:15:16,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 23:15:16,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:16,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:15:16,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-27 23:15:16,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 23:15:16,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:18,020 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:15:18,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:15:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:18,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:18,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:18,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:15:18,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:18,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:15:18,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:18,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:18,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:18,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:18,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:18,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:15:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:18,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:18,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:18,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 23:15:18,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:18,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-27 23:15:18,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-27 23:15:18,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:18,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 23:15:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:18,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:18,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:18,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:15:18,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:18,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:15:18,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:18,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:15:18,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:15:18,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 23:15:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:18,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:18,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:18,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:18,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:18,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:15:18,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:15:18,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:18,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 23:15:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:18,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:18,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:18,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:18,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:18,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:15:18,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:18,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:18,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:18,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:15:18,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:18,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-27 23:15:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:18,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:18,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:18,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:18,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:18,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:15:18,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:18,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:15:18,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:15:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:15:18,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:18,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-27 23:15:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:18,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:18,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:18,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:15:18,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:18,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:15:18,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:18,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:18,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:15:18,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:18,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:18,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-27 23:15:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:18,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:18,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:18,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:18,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:18,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:15:18,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:18,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:18,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:18,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:18,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:18,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-27 23:15:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:18,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:18,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:18,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:15:18,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:18,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:15:18,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:15:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:18,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:19,081 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 23:15:19,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217036069] [2020-10-27 23:15:19,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:15:19,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:15:19,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403792508] [2020-10-27 23:15:19,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:15:19,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:15:19,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:15:19,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:15:19,084 INFO L87 Difference]: Start difference. First operand 962 states and 1641 transitions. Second operand 11 states. [2020-10-27 23:15:20,374 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:15:27,374 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:15:28,074 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:15:28,960 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:29,634 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:15:30,247 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:15:30,552 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:31,643 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:15:31,986 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:33,746 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:34,364 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:35,906 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:15:36,250 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:15:36,737 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:15:36,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:15:36,818 INFO L93 Difference]: Finished difference Result 2006 states and 3367 transitions. [2020-10-27 23:15:36,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 23:15:36,819 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 256 [2020-10-27 23:15:36,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:15:36,829 INFO L225 Difference]: With dead ends: 2006 [2020-10-27 23:15:36,829 INFO L226 Difference]: Without dead ends: 1607 [2020-10-27 23:15:36,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:15:36,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2020-10-27 23:15:37,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1338. [2020-10-27 23:15:37,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1338 states. [2020-10-27 23:15:37,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 2257 transitions. [2020-10-27 23:15:37,038 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 2257 transitions. Word has length 256 [2020-10-27 23:15:37,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:15:37,039 INFO L481 AbstractCegarLoop]: Abstraction has 1338 states and 2257 transitions. [2020-10-27 23:15:37,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:15:37,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 2257 transitions. [2020-10-27 23:15:37,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-27 23:15:37,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:15:37,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:15:37,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:15:37,045 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:15:37,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:15:37,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1049986960, now seen corresponding path program 1 times [2020-10-27 23:15:37,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:15:37,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462796030] [2020-10-27 23:15:37,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:15:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:37,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:37,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:38,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:38,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:39,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:39,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:40,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:40,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:41,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:41,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:42,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:42,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-27 23:15:42,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:15:42,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-27 23:15:42,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:42,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:15:42,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-27 23:15:42,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 23:15:42,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:43,322 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:15:43,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:15:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:43,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:43,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:43,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:15:43,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:43,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 23:15:43,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:43,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:43,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:43,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:43,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:15:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:43,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:43,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:43,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 23:15:43,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:43,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-27 23:15:43,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:43,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 23:15:43,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:43,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 23:15:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:43,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:43,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:43,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:15:43,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:43,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:15:43,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:43,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:43,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:43,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:15:43,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:43,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 23:15:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:43,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:43,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:43,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:43,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:43,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:15:43,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:43,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:43,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:43,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:15:43,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:43,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 23:15:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:43,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:43,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:43,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:43,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:43,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:15:43,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:43,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:15:43,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:15:43,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:15:43,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:44,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-27 23:15:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:44,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:44,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:44,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:15:44,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:44,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:15:44,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:44,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:44,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:15:44,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:44,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:44,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-27 23:15:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:44,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:44,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:44,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:15:44,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:44,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:15:44,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:44,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:44,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:15:44,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:44,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:44,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-27 23:15:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:44,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:44,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:44,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:44,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:44,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:15:44,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:44,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:44,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:44,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:44,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:44,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-27 23:15:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:44,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:44,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:44,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:15:44,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:44,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:15:44,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:44,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:44,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:15:44,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:44,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:44,310 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 23:15:44,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462796030] [2020-10-27 23:15:44,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:15:44,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:15:44,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439396758] [2020-10-27 23:15:44,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:15:44,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:15:44,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:15:44,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:15:44,313 INFO L87 Difference]: Start difference. First operand 1338 states and 2257 transitions. Second operand 11 states. [2020-10-27 23:15:45,479 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:15:52,658 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:15:53,422 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:54,146 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:15:54,792 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:15:55,101 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:56,269 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:15:56,602 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:57,887 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:15:58,213 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:00,257 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:01,793 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:16:02,121 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:16:02,612 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:16:02,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:16:02,705 INFO L93 Difference]: Finished difference Result 3380 states and 5625 transitions. [2020-10-27 23:16:02,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 23:16:02,707 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 260 [2020-10-27 23:16:02,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:16:02,722 INFO L225 Difference]: With dead ends: 3380 [2020-10-27 23:16:02,722 INFO L226 Difference]: Without dead ends: 2605 [2020-10-27 23:16:02,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:16:02,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2020-10-27 23:16:03,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2070. [2020-10-27 23:16:03,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2070 states. [2020-10-27 23:16:03,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 3449 transitions. [2020-10-27 23:16:03,014 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 3449 transitions. Word has length 260 [2020-10-27 23:16:03,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:16:03,015 INFO L481 AbstractCegarLoop]: Abstraction has 2070 states and 3449 transitions. [2020-10-27 23:16:03,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:16:03,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 3449 transitions. [2020-10-27 23:16:03,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-27 23:16:03,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:16:03,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:16:03,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:16:03,022 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:16:03,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:16:03,023 INFO L82 PathProgramCache]: Analyzing trace with hash -268166088, now seen corresponding path program 1 times [2020-10-27 23:16:03,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:16:03,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402294654] [2020-10-27 23:16:03,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:16:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:03,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:03,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:03,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:03,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:04,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:06,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:06,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:07,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:07,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:07,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:08,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:08,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:08,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-27 23:16:08,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:16:08,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-27 23:16:08,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:16:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 23:16:08,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 23:16:08,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:09,449 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:16:09,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:16:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:09,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:09,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:09,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:16:09,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:09,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:16:09,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:09,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:09,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:09,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:09,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:09,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:16:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:09,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:09,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:09,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 23:16:09,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:09,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-27 23:16:09,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:09,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:09,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:09,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 23:16:09,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:09,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 23:16:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:09,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:09,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:09,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:16:09,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:09,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:16:09,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:09,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:09,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:09,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:16:09,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:09,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 23:16:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:09,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:09,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:09,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:16:09,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:09,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:16:09,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:16:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:16:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:16:09,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:10,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 23:16:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:10,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:10,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:10,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:16:10,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:10,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:16:10,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:10,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:10,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:16:10,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:10,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:10,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-27 23:16:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:10,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:10,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:10,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:16:10,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:10,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:16:10,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:10,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:10,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:16:10,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:10,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:10,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-27 23:16:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:10,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:10,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:10,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:16:10,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:10,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:16:10,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:10,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:10,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:16:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:10,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:10,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-27 23:16:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:10,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:10,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:10,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:16:10,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:10,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:16:10,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:16:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:10,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:10,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-27 23:16:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:10,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:10,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:10,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:16:10,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:10,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:16:10,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:16:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:10,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:10,436 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 23:16:10,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402294654] [2020-10-27 23:16:10,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:16:10,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:16:10,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641560461] [2020-10-27 23:16:10,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:16:10,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:16:10,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:16:10,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:16:10,439 INFO L87 Difference]: Start difference. First operand 2070 states and 3449 transitions. Second operand 11 states. [2020-10-27 23:16:11,591 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:16:18,754 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:19,335 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:16:19,942 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:20,245 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:21,447 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:21,782 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:23,052 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:23,387 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:24,664 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:25,022 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:27,479 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:16:28,392 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:16:28,887 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:16:29,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:16:29,016 INFO L93 Difference]: Finished difference Result 6100 states and 10077 transitions. [2020-10-27 23:16:29,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 23:16:29,026 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 264 [2020-10-27 23:16:29,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:16:29,054 INFO L225 Difference]: With dead ends: 6100 [2020-10-27 23:16:29,054 INFO L226 Difference]: Without dead ends: 4593 [2020-10-27 23:16:29,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:16:29,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4593 states. [2020-10-27 23:16:29,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4593 to 3502. [2020-10-27 23:16:29,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3502 states. [2020-10-27 23:16:29,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3502 states to 3502 states and 5713 transitions. [2020-10-27 23:16:29,488 INFO L78 Accepts]: Start accepts. Automaton has 3502 states and 5713 transitions. Word has length 264 [2020-10-27 23:16:29,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:16:29,489 INFO L481 AbstractCegarLoop]: Abstraction has 3502 states and 5713 transitions. [2020-10-27 23:16:29,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:16:29,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3502 states and 5713 transitions. [2020-10-27 23:16:29,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-27 23:16:29,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:16:29,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:16:29,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:16:29,498 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:16:29,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:16:29,498 INFO L82 PathProgramCache]: Analyzing trace with hash -2091824688, now seen corresponding path program 1 times [2020-10-27 23:16:29,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:16:29,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505387844] [2020-10-27 23:16:29,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:16:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:29,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:29,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:29,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:30,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:30,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:30,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:31,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:31,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:31,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:34,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:34,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-27 23:16:34,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:16:34,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-27 23:16:34,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:16:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-27 23:16:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 23:16:34,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:35,782 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:16:35,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:16:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:35,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:35,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:35,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:16:35,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:35,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:16:35,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:35,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:35,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:35,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:35,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:35,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:16:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:35,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:36,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:36,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 23:16:36,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:36,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-27 23:16:36,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:36,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:36,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:36,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-27 23:16:36,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:36,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 23:16:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:36,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:36,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:36,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:16:36,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:36,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 23:16:36,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:36,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:36,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:36,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:16:36,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:36,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 23:16:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:36,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:36,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:36,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:16:36,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:36,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:16:36,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:36,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:36,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:36,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:16:36,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:36,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-27 23:16:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:36,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:36,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:36,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:16:36,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:36,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:16:36,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:36,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:36,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:36,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:16:36,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:36,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-27 23:16:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:36,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:36,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:36,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:16:36,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:36,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:16:36,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:36,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:36,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:36,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:16:36,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:36,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 23:16:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:36,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:36,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:36,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:16:36,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:36,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:16:36,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:16:36,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:36,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-27 23:16:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:36,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:36,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:36,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:16:36,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:36,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:16:36,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:16:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:16:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:16:36,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:36,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-27 23:16:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:36,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:36,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:36,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:16:36,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:36,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:16:36,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:16:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:36,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:36,640 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 23:16:36,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505387844] [2020-10-27 23:16:36,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:16:36,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:16:36,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651290823] [2020-10-27 23:16:36,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:16:36,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:16:36,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:16:36,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:16:36,642 INFO L87 Difference]: Start difference. First operand 3502 states and 5713 transitions. Second operand 11 states. [2020-10-27 23:16:37,800 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:16:45,026 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:45,870 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:46,738 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:47,714 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:48,635 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:49,270 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:16:50,824 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:51,549 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:52,257 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:52,936 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:54,448 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:16:54,812 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:16:55,273 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:16:55,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:16:55,335 INFO L93 Difference]: Finished difference Result 11348 states and 18453 transitions. [2020-10-27 23:16:55,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 23:16:55,340 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 268 [2020-10-27 23:16:55,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:16:55,385 INFO L225 Difference]: With dead ends: 11348 [2020-10-27 23:16:55,386 INFO L226 Difference]: Without dead ends: 8409 [2020-10-27 23:16:55,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:16:55,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8409 states. [2020-10-27 23:16:56,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8409 to 6278. [2020-10-27 23:16:56,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6278 states. [2020-10-27 23:16:56,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 10121 transitions. [2020-10-27 23:16:56,093 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 10121 transitions. Word has length 268 [2020-10-27 23:16:56,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:16:56,094 INFO L481 AbstractCegarLoop]: Abstraction has 6278 states and 10121 transitions. [2020-10-27 23:16:56,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:16:56,094 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 10121 transitions. [2020-10-27 23:16:56,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-27 23:16:56,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:16:56,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:16:56,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:16:56,102 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:16:56,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:16:56,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1057755624, now seen corresponding path program 1 times [2020-10-27 23:16:56,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:16:56,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732472713] [2020-10-27 23:16:56,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:16:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:56,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:56,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:56,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:57,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:57,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:57,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:57,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:57,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:58,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:01,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:01,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 23:17:01,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:17:01,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 23:17:01,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 23:17:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-27 23:17:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 23:17:01,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:02,370 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:17:02,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:17:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:02,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:02,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:02,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:17:02,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:02,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:17:02,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:02,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:02,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:17:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:02,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:02,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:02,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 23:17:02,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:02,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-10-27 23:17:02,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 23:17:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-27 23:17:02,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:03,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 23:17:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:03,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:03,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:03,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:17:03,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:03,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 23:17:03,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:03,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:17:03,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:03,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:17:03,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:03,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 23:17:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:03,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:03,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:03,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:17:03,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:03,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:17:03,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:03,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:17:03,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:17:03,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 23:17:03,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:03,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-27 23:17:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:03,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:03,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:03,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:17:03,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:03,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:17:03,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:03,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:17:03,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:17:03,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 23:17:03,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:03,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-27 23:17:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:03,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:03,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:03,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:17:03,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:03,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:17:03,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:03,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:17:03,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:17:03,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 23:17:03,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:03,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 23:17:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:03,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:03,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:03,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:17:03,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:03,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:17:03,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:17:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:17:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 23:17:03,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:03,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-27 23:17:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:03,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:03,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:03,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:17:03,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:03,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:17:03,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:03,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:17:03,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:17:03,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 23:17:03,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:03,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-27 23:17:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:03,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:03,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:03,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:17:03,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:03,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:17:03,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:03,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:17:03,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:17:03,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:17:03,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:03,675 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 23:17:03,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732472713] [2020-10-27 23:17:03,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:17:03,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-27 23:17:03,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104166656] [2020-10-27 23:17:03,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 23:17:03,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:17:03,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 23:17:03,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-27 23:17:03,678 INFO L87 Difference]: Start difference. First operand 6278 states and 10121 transitions. Second operand 19 states. [2020-10-27 23:17:04,961 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 410 [2020-10-27 23:17:16,231 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:17:17,492 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 23:17:18,663 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 23:17:19,881 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 23:17:20,489 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:17:21,143 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:21,801 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:17:22,156 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:17:23,035 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:17:23,535 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:24,067 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:17:24,431 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:17:24,772 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:17:25,958 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:17:26,559 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:26,924 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:17:27,508 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:17:27,880 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:17:28,222 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:17:28,573 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:17:30,011 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:17:30,620 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:30,991 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:17:31,402 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:17:32,037 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:17:32,439 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:17:32,800 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:17:33,157 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:17:33,520 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:17:35,183 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:17:35,861 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:36,264 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:17:36,642 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:17:37,023 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:17:38,677 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:17:39,927 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 23:17:41,238 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 407 [2020-10-27 23:17:42,528 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 409