/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.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:15:29,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:15:29,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:15:29,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:15:29,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:15:29,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:15:29,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:15:29,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:15:29,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:15:29,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:15:29,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:15:29,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:15:29,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:15:29,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:15:29,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:15:29,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:15:29,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:15:29,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:15:29,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:15:29,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:15:29,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:15:29,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:15:29,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:15:29,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:15:29,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:15:29,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:15:29,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:15:29,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:15:29,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:15:29,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:15:29,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:15:29,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:15:29,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:15:29,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:15:29,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:15:29,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:15:29,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:15:29,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:15:29,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:15:29,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:15:29,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:15:29,973 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 23:15:30,012 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:15:30,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:15:30,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:15:30,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:15:30,014 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:15:30,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:15:30,014 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:15:30,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:15:30,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:15:30,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:15:30,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:15:30,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:15:30,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:15:30,016 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:15:30,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:15:30,016 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:15:30,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:15:30,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:15:30,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:15:30,017 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:15:30,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:15:30,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:15:30,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:15:30,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:15:30,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:15:30,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:15:30,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:15:30,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:15:30,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:15:30,019 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:15:30,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:15:30,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:15:30,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:15:30,427 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:15:30,429 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:15:30,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.ufo.BOUNDED-10.pals.c [2020-10-27 23:15:30,518 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0bd7a976/45c32c21620a40e4bd2d1e9aa47946e2/FLAG908fbba6d [2020-10-27 23:15:31,433 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:15:31,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.ufo.BOUNDED-10.pals.c [2020-10-27 23:15:31,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0bd7a976/45c32c21620a40e4bd2d1e9aa47946e2/FLAG908fbba6d [2020-10-27 23:15:31,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0bd7a976/45c32c21620a40e4bd2d1e9aa47946e2 [2020-10-27 23:15:31,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:15:31,579 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:15:31,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:15:31,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:15:31,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:15:31,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:15:31" (1/1) ... [2020-10-27 23:15:31,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@952e8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:31, skipping insertion in model container [2020-10-27 23:15:31,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:15:31" (1/1) ... [2020-10-27 23:15:31,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:15:31,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:15:32,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:15:32,153 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:15:32,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:15:32,370 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:15:32,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:32 WrapperNode [2020-10-27 23:15:32,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:15:32,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:15:32,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:15:32,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:15:32,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:32" (1/1) ... [2020-10-27 23:15:32,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:32" (1/1) ... [2020-10-27 23:15:32,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:32" (1/1) ... [2020-10-27 23:15:32,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:32" (1/1) ... [2020-10-27 23:15:32,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:32" (1/1) ... [2020-10-27 23:15:32,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:32" (1/1) ... [2020-10-27 23:15:32,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:32" (1/1) ... [2020-10-27 23:15:32,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:15:32,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:15:32,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:15:32,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:15:32,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:32" (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 23:15:32,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:15:32,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:15:32,665 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:15:32,665 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:15:32,666 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 23:15:32,666 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 23:15:32,666 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 23:15:32,666 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 23:15:32,666 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-27 23:15:32,666 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 23:15:32,667 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 23:15:32,667 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:15:32,667 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 23:15:32,667 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:15:32,667 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:15:32,668 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:15:32,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:15:32,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:15:32,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:15:32,668 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:15:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:15:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:15:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:15:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:15:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:15:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:15:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:15:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:15:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:15:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:15:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:15:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:15:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:15:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:15:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:15:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:15:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:15:35,585 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:15:35,586 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 23:15:35,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:15:35 BoogieIcfgContainer [2020-10-27 23:15:35,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:15:35,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:15:35,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:15:35,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:15:35,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:15:31" (1/3) ... [2020-10-27 23:15:35,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b3fcb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:15:35, skipping insertion in model container [2020-10-27 23:15:35,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:32" (2/3) ... [2020-10-27 23:15:35,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b3fcb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:15:35, skipping insertion in model container [2020-10-27 23:15:35,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:15:35" (3/3) ... [2020-10-27 23:15:35,598 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.ufo.BOUNDED-10.pals.c [2020-10-27 23:15:35,610 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:15:35,616 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:15:35,629 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:15:35,662 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:15:35,662 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:15:35,662 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:15:35,662 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:15:35,663 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:15:35,663 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:15:35,663 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:15:35,663 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:15:35,700 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states. [2020-10-27 23:15:35,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 23:15:35,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:15:35,729 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 23:15:35,729 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:15:35,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:15:35,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1718594068, now seen corresponding path program 1 times [2020-10-27 23:15:35,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:15:35,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595364656] [2020-10-27 23:15:35,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:15:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:36,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:37,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:37,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 23:15:37,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:37,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1110 [2020-10-27 23:15:37,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:37,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:37,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-27 23:15:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:37,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 23:15:39,073 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:15:39,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:15:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:39,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:39,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:39,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:15:39,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:39,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 23:15:39,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:39,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:39,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:39,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:39,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:39,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:15:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:39,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:39,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:39,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 23:15:39,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:39,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 23:15:39,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:39,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:39,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:39,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:39,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:39,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 23:15:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:39,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:39,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:39,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:15:39,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:39,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:15:39,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:15:39,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:39,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:39,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 23:15:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:39,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:39,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:39,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:39,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:39,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:15:39,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:39,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:39,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:39,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:39,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:39,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 23:15:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:39,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:39,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:39,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:39,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:39,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:15:39,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:39,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:39,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:39,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:39,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-27 23:15:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:39,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:39,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:39,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:39,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:39,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:15:39,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:39,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:39,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:39,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:39,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:39,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 23:15:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:39,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:39,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:39,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:39,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:39,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:15:39,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:39,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:39,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:39,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:39,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:39,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-27 23:15:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:39,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:39,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:39,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:39,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:39,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:15:39,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:39,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:39,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:39,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:39,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:39,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-27 23:15:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:39,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:39,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:39,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:15:39,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:39,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:15:39,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:39,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:39,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:15:39,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:39,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:39,851 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 23:15:39,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595364656] [2020-10-27 23:15:39,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:15:39,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 23:15:39,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289754975] [2020-10-27 23:15:39,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 23:15:39,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:15:39,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 23:15:39,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:15:39,878 INFO L87 Difference]: Start difference. First operand 777 states. Second operand 8 states. [2020-10-27 23:15:42,939 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:43,666 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:44,499 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:45,240 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:46,052 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:47,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:15:47,281 INFO L93 Difference]: Finished difference Result 1056 states and 1861 transitions. [2020-10-27 23:15:47,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 23:15:47,285 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 188 [2020-10-27 23:15:47,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:15:47,321 INFO L225 Difference]: With dead ends: 1056 [2020-10-27 23:15:47,321 INFO L226 Difference]: Without dead ends: 834 [2020-10-27 23:15:47,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:15:47,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-10-27 23:15:47,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 769. [2020-10-27 23:15:47,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-27 23:15:47,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1388 transitions. [2020-10-27 23:15:47,575 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1388 transitions. Word has length 188 [2020-10-27 23:15:47,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:15:47,576 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 1388 transitions. [2020-10-27 23:15:47,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 23:15:47,576 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1388 transitions. [2020-10-27 23:15:47,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 23:15:47,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:15:47,582 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 23:15:47,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:15:47,582 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:15:47,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:15:47,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1274693394, now seen corresponding path program 1 times [2020-10-27 23:15:47,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:15:47,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305206259] [2020-10-27 23:15:47,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:15:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:47,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:50,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:50,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 23:15:50,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:50,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2837 [2020-10-27 23:15:50,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:50,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:15:50,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 23:15:50,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:15:50,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:51,723 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:15:51,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:15:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:51,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:51,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:51,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:15:51,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:51,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 23:15:51,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:51,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:51,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:51,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:15:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:51,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:52,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:52,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 23:15:52,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:52,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-10-27 23:15:52,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:15:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 23:15:52,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:52,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 23:15:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:52,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:52,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:52,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:15:52,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:52,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:15:52,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:52,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:15:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 23:15:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:15:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:52,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 23:15:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:52,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:52,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:52,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:52,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:52,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:15:52,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:52,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:52,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 23:15:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:52,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:52,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:52,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:52,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:52,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:15:52,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:52,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:52,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:52,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:52,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:52,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-27 23:15:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:52,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:52,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:52,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:52,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:52,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:15:52,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:52,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:52,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 23:15:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:52,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:52,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:52,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:52,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:52,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:15:52,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:52,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:52,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-27 23:15:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:52,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:52,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:52,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:52,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:52,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:15:52,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:52,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:52,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:52,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:52,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:52,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-27 23:15:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:52,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:52,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:52,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:15:52,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:52,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:15:52,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:52,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:52,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:15:52,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:52,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:52,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:15:52,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305206259] [2020-10-27 23:15:52,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:15:52,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 23:15:52,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418762710] [2020-10-27 23:15:52,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 23:15:52,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:15:52,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 23:15:52,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 23:15:52,967 INFO L87 Difference]: Start difference. First operand 769 states and 1388 transitions. Second operand 14 states. [2020-10-27 23:16:02,616 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:16:03,766 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 23:16:05,074 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 23:16:06,185 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 23:16:07,649 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:08,517 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:09,598 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:10,545 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:11,544 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:13,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:16:13,194 INFO L93 Difference]: Finished difference Result 1057 states and 1863 transitions. [2020-10-27 23:16:13,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 23:16:13,195 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 188 [2020-10-27 23:16:13,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:16:13,203 INFO L225 Difference]: With dead ends: 1057 [2020-10-27 23:16:13,203 INFO L226 Difference]: Without dead ends: 845 [2020-10-27 23:16:13,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-27 23:16:13,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2020-10-27 23:16:13,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 769. [2020-10-27 23:16:13,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-27 23:16:13,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1323 transitions. [2020-10-27 23:16:13,346 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1323 transitions. Word has length 188 [2020-10-27 23:16:13,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:16:13,346 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 1323 transitions. [2020-10-27 23:16:13,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 23:16:13,347 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1323 transitions. [2020-10-27 23:16:13,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-27 23:16:13,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:16:13,351 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 23:16:13,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:16:13,351 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:16:13,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:16:13,352 INFO L82 PathProgramCache]: Analyzing trace with hash 595284816, now seen corresponding path program 1 times [2020-10-27 23:16:13,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:16:13,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876014253] [2020-10-27 23:16:13,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:16:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:13,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:13,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:14,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:15,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:18,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:18,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-27 23:16:18,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 23:16:18,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-27 23:16:18,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:18,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:16:18,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-27 23:16:18,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 23:16:18,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:16:19,651 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:16:19,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:16:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:19,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:19,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:19,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:16:19,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:19,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:16:19,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:19,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:19,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:19,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:19,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:19,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:16:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:19,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:20,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:20,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 23:16:20,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:20,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-27 23:16:20,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-27 23:16:20,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:20,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 23:16:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:20,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:20,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:20,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:16:20,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:20,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:16:20,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:20,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:20,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:20,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:16:20,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:20,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 23:16:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:20,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:20,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:20,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:16:20,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:20,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:16:20,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:16:20,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:20,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 23:16:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:20,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:20,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:20,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:16:20,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:20,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:16:20,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:20,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:20,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:20,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:16:20,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:20,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-27 23:16:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:20,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:20,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:20,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:16:20,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:20,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:16:20,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:20,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:20,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:20,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:16:20,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:20,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-27 23:16:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:20,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:20,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:20,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:16:20,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:20,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:16:20,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:16:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:16:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:16:20,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:20,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-27 23:16:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:20,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:20,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:20,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:16:20,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:20,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:16:20,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:20,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:20,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:16:20,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:20,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:20,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-27 23:16:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:20,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:20,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:20,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:16:20,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:20,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:16:20,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:20,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:20,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:16:20,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:20,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:20,643 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 23:16:20,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876014253] [2020-10-27 23:16:20,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:16:20,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:16:20,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652477555] [2020-10-27 23:16:20,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:16:20,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:16:20,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:16:20,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:16:20,646 INFO L87 Difference]: Start difference. First operand 769 states and 1323 transitions. Second operand 11 states. [2020-10-27 23:16:21,802 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:16:28,583 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:29,296 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:30,170 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:30,938 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:31,640 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:16:32,230 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:32,521 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:34,288 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:34,846 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:35,476 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:36,861 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:16:37,186 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:16:37,703 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:16:37,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:16:37,760 INFO L93 Difference]: Finished difference Result 1304 states and 2208 transitions. [2020-10-27 23:16:37,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 23:16:37,761 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 252 [2020-10-27 23:16:37,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:16:37,771 INFO L225 Difference]: With dead ends: 1304 [2020-10-27 23:16:37,771 INFO L226 Difference]: Without dead ends: 1098 [2020-10-27 23:16:37,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:16:37,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2020-10-27 23:16:37,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 962. [2020-10-27 23:16:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2020-10-27 23:16:37,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1641 transitions. [2020-10-27 23:16:37,927 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1641 transitions. Word has length 252 [2020-10-27 23:16:37,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:16:37,928 INFO L481 AbstractCegarLoop]: Abstraction has 962 states and 1641 transitions. [2020-10-27 23:16:37,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:16:37,928 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1641 transitions. [2020-10-27 23:16:37,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-27 23:16:37,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:16:37,934 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 23:16:37,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:16:37,935 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:16:37,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:16:37,935 INFO L82 PathProgramCache]: Analyzing trace with hash 295384056, now seen corresponding path program 1 times [2020-10-27 23:16:37,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:16:37,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151416376] [2020-10-27 23:16:37,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:16:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:38,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:38,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:38,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:39,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:41,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:41,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:41,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:43,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:43,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-27 23:16:43,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:16:43,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 23:16:43,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:43,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:16:43,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-27 23:16:43,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 23:16:43,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:44,144 WARN L193 SmtUtils]: Spent 980.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:16:44,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:16:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:44,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:44,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:44,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:16:44,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:44,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 23:16:44,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:44,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:44,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:44,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:44,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:44,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:16:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:44,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:44,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:44,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 23:16:44,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:44,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-27 23:16:44,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:44,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:44,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:44,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-27 23:16:44,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:44,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 23:16:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:44,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:44,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:44,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:16:44,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:44,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:16:44,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:44,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:44,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:44,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:16:44,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:44,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 23:16:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:44,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:44,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:44,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:16:44,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:44,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:16:44,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:44,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:44,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:44,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:16:44,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:44,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 23:16:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:44,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:44,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:44,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:16:44,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:44,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:16:44,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:44,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:44,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:44,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:16:44,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:44,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-27 23:16:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:44,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:44,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:44,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:16:44,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:44,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:16:44,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:44,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:16:44,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:16:44,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:16:44,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:44,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-27 23:16:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:45,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:45,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:45,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:16:45,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:45,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:16:45,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:16:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:45,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:45,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-27 23:16:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:45,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:45,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:45,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:16:45,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:45,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:16:45,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:45,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:45,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:16:45,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:45,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:45,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-27 23:16:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:45,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:45,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:45,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:16:45,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:45,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:16:45,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:45,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:45,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:16:45,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:45,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:45,199 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 23:16:45,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151416376] [2020-10-27 23:16:45,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:16:45,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:16:45,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345907514] [2020-10-27 23:16:45,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:16:45,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:16:45,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:16:45,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:16:45,201 INFO L87 Difference]: Start difference. First operand 962 states and 1641 transitions. Second operand 11 states. [2020-10-27 23:16:46,321 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:16:53,030 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:53,708 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:54,561 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:55,226 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:16:55,830 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:56,128 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:57,100 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:57,397 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:58,942 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:59,495 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:00,864 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:17:01,176 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:17:01,617 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:17:01,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:17:01,685 INFO L93 Difference]: Finished difference Result 2006 states and 3367 transitions. [2020-10-27 23:17:01,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 23:17:01,685 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 256 [2020-10-27 23:17:01,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:17:01,695 INFO L225 Difference]: With dead ends: 2006 [2020-10-27 23:17:01,695 INFO L226 Difference]: Without dead ends: 1607 [2020-10-27 23:17:01,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:17:01,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2020-10-27 23:17:01,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1338. [2020-10-27 23:17:01,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1338 states. [2020-10-27 23:17:01,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 2257 transitions. [2020-10-27 23:17:01,897 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 2257 transitions. Word has length 256 [2020-10-27 23:17:01,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:17:01,898 INFO L481 AbstractCegarLoop]: Abstraction has 1338 states and 2257 transitions. [2020-10-27 23:17:01,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:17:01,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 2257 transitions. [2020-10-27 23:17:01,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-27 23:17:01,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:17:01,903 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 23:17:01,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:17:01,904 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:17:01,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:17:01,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1049986960, now seen corresponding path program 1 times [2020-10-27 23:17:01,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:17:01,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166065534] [2020-10-27 23:17:01,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:17:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:02,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:02,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:02,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:03,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:03,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:04,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:04,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:05,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:05,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:06,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:07,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:07,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-27 23:17:07,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:17:07,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 23:17:07,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:07,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:17:07,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-27 23:17:07,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 23:17:07,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:08,156 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:17:08,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:17:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:08,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:08,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:08,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:17:08,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:08,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:17:08,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:08,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:08,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:08,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:08,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:17:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:08,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:08,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:08,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 23:17:08,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:08,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-27 23:17:08,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:08,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:17:08,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:08,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 23:17:08,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:08,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 23:17:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:08,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:08,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:08,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:17:08,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:08,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:17:08,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:08,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:17:08,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:08,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:17:08,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:08,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 23:17:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:08,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:08,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:08,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:17:08,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:08,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:17:08,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:08,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:17:08,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:17:08,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:08,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 23:17:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:08,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:08,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:08,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:17:08,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:08,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:17:08,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:08,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:17:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:17:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:17:08,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:08,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-27 23:17:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:08,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:08,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:08,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:17:08,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:08,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:17:08,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:08,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:08,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:17:08,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:08,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:08,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-27 23:17:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:08,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:08,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:08,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:17:08,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:08,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:17:08,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:08,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:08,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:17:08,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:08,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:08,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-27 23:17:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:08,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:08,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:08,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:17:08,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:08,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:17:08,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:08,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:08,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:17:08,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:08,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:08,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-27 23:17:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:08,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:08,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:08,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:17:08,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:08,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:17:08,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:08,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:08,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:17:08,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:08,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:09,019 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 23:17:09,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166065534] [2020-10-27 23:17:09,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:17:09,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:17:09,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951822560] [2020-10-27 23:17:09,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:17:09,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:17:09,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:17:09,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:17:09,023 INFO L87 Difference]: Start difference. First operand 1338 states and 2257 transitions. Second operand 11 states. [2020-10-27 23:17:10,156 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:17:16,947 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:17:17,633 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:18,324 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:17:18,922 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:17:19,219 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:20,325 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:17:20,649 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:21,800 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:17:22,096 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:23,896 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:25,266 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:17:25,589 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:17:26,028 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:17:26,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:17:26,111 INFO L93 Difference]: Finished difference Result 3380 states and 5625 transitions. [2020-10-27 23:17:26,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 23:17:26,111 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 260 [2020-10-27 23:17:26,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:17:26,125 INFO L225 Difference]: With dead ends: 3380 [2020-10-27 23:17:26,126 INFO L226 Difference]: Without dead ends: 2605 [2020-10-27 23:17:26,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:17:26,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2020-10-27 23:17:26,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2070. [2020-10-27 23:17:26,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2070 states. [2020-10-27 23:17:26,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 3449 transitions. [2020-10-27 23:17:26,413 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 3449 transitions. Word has length 260 [2020-10-27 23:17:26,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:17:26,413 INFO L481 AbstractCegarLoop]: Abstraction has 2070 states and 3449 transitions. [2020-10-27 23:17:26,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:17:26,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 3449 transitions. [2020-10-27 23:17:26,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-27 23:17:26,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:17:26,421 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 23:17:26,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:17:26,421 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:17:26,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:17:26,422 INFO L82 PathProgramCache]: Analyzing trace with hash -268166088, now seen corresponding path program 1 times [2020-10-27 23:17:26,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:17:26,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706770712] [2020-10-27 23:17:26,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:17:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:26,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:26,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:26,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:27,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:27,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:29,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:29,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:30,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:30,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:30,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:31,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:31,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:31,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:31,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-27 23:17:31,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:17:31,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 23:17:31,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:17:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 23:17:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 23:17:31,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:32,844 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:17:32,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:17:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:32,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:32,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:32,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:17:32,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:32,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:17:32,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:32,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:32,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:32,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:32,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:32,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:17:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:32,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:33,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:33,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 23:17:33,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:33,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-27 23:17:33,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:33,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:17:33,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:33,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 23:17:33,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:33,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 23:17:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:33,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:33,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:33,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:17:33,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:33,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:17:33,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:33,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:17:33,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:33,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:17:33,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:33,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 23:17:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:33,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:33,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:33,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:17:33,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:33,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:17:33,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:33,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:17:33,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:17:33,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:17:33,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:33,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 23:17:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:33,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:33,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:33,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:17:33,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:33,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:17:33,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:33,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:33,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:17:33,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:33,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:33,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-27 23:17:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:33,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:33,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:33,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:17:33,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:33,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:17:33,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:33,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:33,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:17:33,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:33,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:33,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-27 23:17:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:33,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:33,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:33,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:17:33,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:33,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:17:33,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:33,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:33,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:17:33,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:33,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:33,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-27 23:17:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:33,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:33,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:33,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:17:33,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:33,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:17:33,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:33,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:33,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:17:33,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:33,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:33,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-27 23:17:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:33,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:33,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:33,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:17:33,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:33,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:17:33,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:17:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:33,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:33,772 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 23:17:33,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706770712] [2020-10-27 23:17:33,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:17:33,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:17:33,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329224536] [2020-10-27 23:17:33,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:17:33,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:17:33,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:17:33,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:17:33,774 INFO L87 Difference]: Start difference. First operand 2070 states and 3449 transitions. Second operand 11 states. [2020-10-27 23:17:34,893 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:17:41,705 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:42,273 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:17:42,874 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:17:43,175 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:44,328 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:17:44,621 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:45,726 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:17:46,022 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:47,140 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:17:47,434 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:49,647 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:17:50,432 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:17:50,913 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:17:51,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:17:51,025 INFO L93 Difference]: Finished difference Result 6100 states and 10077 transitions. [2020-10-27 23:17:51,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 23:17:51,033 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 264 [2020-10-27 23:17:51,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:17:51,061 INFO L225 Difference]: With dead ends: 6100 [2020-10-27 23:17:51,061 INFO L226 Difference]: Without dead ends: 4593 [2020-10-27 23:17:51,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:17:51,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4593 states. [2020-10-27 23:17:51,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4593 to 3502. [2020-10-27 23:17:51,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3502 states. [2020-10-27 23:17:51,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3502 states to 3502 states and 5713 transitions. [2020-10-27 23:17:51,451 INFO L78 Accepts]: Start accepts. Automaton has 3502 states and 5713 transitions. Word has length 264 [2020-10-27 23:17:51,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:17:51,452 INFO L481 AbstractCegarLoop]: Abstraction has 3502 states and 5713 transitions. [2020-10-27 23:17:51,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:17:51,452 INFO L276 IsEmpty]: Start isEmpty. Operand 3502 states and 5713 transitions. [2020-10-27 23:17:51,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-27 23:17:51,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:17:51,461 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 23:17:51,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:17:51,461 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:17:51,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:17:51,462 INFO L82 PathProgramCache]: Analyzing trace with hash -2091824688, now seen corresponding path program 1 times [2020-10-27 23:17:51,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:17:51,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91916632] [2020-10-27 23:17:51,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:17:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:51,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:51,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:51,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:52,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:52,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:52,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:53,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:53,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:53,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:56,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:56,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-27 23:17:56,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:17:56,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:17:56,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:56,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:17:56,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-27 23:17:56,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 23:17:56,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:57,680 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:17:57,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:17:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:57,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:57,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:57,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:17:57,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:57,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:17:57,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:57,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:57,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:57,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:57,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:57,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:17:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:57,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:57,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:57,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 23:17:57,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:57,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 23:17:57,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:57,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:17:57,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-27 23:17:57,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:57,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 23:17:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:57,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:57,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:57,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:17:57,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:57,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:17:57,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:57,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:17:57,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:57,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:17:57,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:57,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 23:17:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:58,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:58,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:58,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:17:58,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:58,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:17:58,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:17:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:17:58,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:58,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-27 23:17:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:58,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:58,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:58,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:17:58,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:58,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:17:58,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:58,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:17:58,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:58,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:17:58,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:58,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-27 23:17:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:58,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:58,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:58,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:17:58,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:58,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:17:58,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:58,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:17:58,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:58,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:17:58,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:58,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 23:17:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:58,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:58,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:58,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:17:58,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:58,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:17:58,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:58,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:17:58,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:58,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:17:58,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:58,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-27 23:17:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:58,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:58,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:58,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:17:58,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:58,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:17:58,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:17:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:17:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:17:58,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:58,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-27 23:17:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:58,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:58,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:58,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:17:58,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:58,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:17:58,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:17:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:58,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:58,409 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 23:17:58,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91916632] [2020-10-27 23:17:58,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:17:58,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:17:58,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597549855] [2020-10-27 23:17:58,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:17:58,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:17:58,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:17:58,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:17:58,412 INFO L87 Difference]: Start difference. First operand 3502 states and 5713 transitions. Second operand 11 states. [2020-10-27 23:17:59,595 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:18:06,440 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:18:07,262 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:18:08,081 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:18:08,942 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:18:09,759 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:18:10,330 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:18:11,722 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:18:12,381 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:18:12,996 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:18:13,619 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:18:15,018 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:18:15,333 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:18:15,833 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:18:15,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:18:15,890 INFO L93 Difference]: Finished difference Result 11348 states and 18453 transitions. [2020-10-27 23:18:15,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 23:18:15,892 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 268 [2020-10-27 23:18:15,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:18:15,930 INFO L225 Difference]: With dead ends: 11348 [2020-10-27 23:18:15,930 INFO L226 Difference]: Without dead ends: 8409 [2020-10-27 23:18:15,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:18:15,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8409 states. [2020-10-27 23:18:16,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8409 to 6278. [2020-10-27 23:18:16,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6278 states. [2020-10-27 23:18:16,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 10121 transitions. [2020-10-27 23:18:16,651 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 10121 transitions. Word has length 268 [2020-10-27 23:18:16,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:18:16,651 INFO L481 AbstractCegarLoop]: Abstraction has 6278 states and 10121 transitions. [2020-10-27 23:18:16,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:18:16,652 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 10121 transitions. [2020-10-27 23:18:16,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-27 23:18:16,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:18:16,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:18:16,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:18:16,660 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:18:16,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:18:16,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1057755624, now seen corresponding path program 1 times [2020-10-27 23:18:16,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:18:16,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133328524] [2020-10-27 23:18:16,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:18:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:18:16,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:16,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:17,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:17,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:17,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:18,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:18,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:18,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:18,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:21,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:18:21,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 23:18:21,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:18:21,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 23:18:21,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:18:21,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 23:18:21,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-27 23:18:21,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 23:18:21,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:18:22,866 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:18:22,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:18:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:18:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:22,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:18:22,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:18:22,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:18:22,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:18:22,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:18:22,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:18:22,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:18:22,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:18:22,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:18:22,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:18:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:18:22,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:23,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:18:23,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 23:18:23,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:18:23,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-10-27 23:18:23,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:18:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 23:18:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:18:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-27 23:18:23,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:18:23,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 23:18:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:18:23,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:23,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:18:23,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:18:23,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:18:23,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:18:23,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:18:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:18:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:18:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:18:23,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:18:23,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 23:18:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:18:23,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:23,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:18:23,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:18:23,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:18:23,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:18:23,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:18:23,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:18:23,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:18:23,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 23:18:23,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:18:23,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-27 23:18:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:18:23,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:23,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:18:23,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:18:23,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:18:23,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:18:23,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:18:23,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:18:23,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:18:23,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 23:18:23,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:18:23,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-27 23:18:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:18:23,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:23,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:18:23,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:18:23,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:18:23,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:18:23,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:18:23,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:18:23,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:18:23,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 23:18:23,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:18:23,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 23:18:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:18:23,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:23,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:18:23,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:18:23,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:18:23,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:18:23,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:18:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:18:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:18:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 23:18:23,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:18:24,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-27 23:18:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:18:24,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:24,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:18:24,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:18:24,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:18:24,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:18:24,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:18:24,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:18:24,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:18:24,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 23:18:24,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:18:24,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-27 23:18:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:18:24,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:24,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:18:24,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:18:24,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:18:24,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:18:24,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:18:24,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:18:24,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:18:24,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:18:24,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:18:24,175 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 23:18:24,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133328524] [2020-10-27 23:18:24,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:18:24,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-27 23:18:24,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598427282] [2020-10-27 23:18:24,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 23:18:24,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:18:24,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 23:18:24,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-27 23:18:24,178 INFO L87 Difference]: Start difference. First operand 6278 states and 10121 transitions. Second operand 19 states. [2020-10-27 23:18:25,417 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 410 [2020-10-27 23:18:35,970 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:18:37,065 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 23:18:38,224 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 23:18:39,356 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 23:18:39,938 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:18:40,553 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:18:41,137 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:18:41,479 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:18:42,329 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:18:42,845 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:18:43,357 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:18:43,705 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:18:44,035 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:18:45,155 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:18:45,700 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:18:46,056 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:18:46,629 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:18:46,996 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:18:47,327 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:18:47,707 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:18:49,088 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:18:49,680 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:18:50,040 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:18:50,404 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:18:51,025 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:18:51,406 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:18:51,741 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:18:52,078 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:18:52,426 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:18:54,072 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:18:54,718 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:18:55,079 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:18:55,448 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:18:55,824 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:18:57,325 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:18:58,496 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 23:18:59,645 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 407 [2020-10-27 23:19:00,800 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-27 23:19:02,019 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-27 23:19:04,233 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:19:05,440 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 23:19:06,661 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 23:19:07,837 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 23:19:10,076 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:19:10,449 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:19:10,825 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 23:19:11,194 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 193