/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:19:40,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:19:40,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:19:40,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:19:40,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:19:40,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:19:40,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:19:40,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:19:40,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:19:40,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:19:40,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:19:40,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:19:40,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:19:40,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:19:40,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:19:40,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:19:40,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:19:40,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:19:40,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:19:40,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:19:40,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:19:40,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:19:40,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:19:40,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:19:40,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:19:40,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:19:40,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:19:40,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:19:40,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:19:40,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:19:40,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:19:40,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:19:40,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:19:40,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:19:40,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:19:40,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:19:40,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:19:40,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:19:40,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:19:40,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:19:40,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:19:40,888 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 [2020-10-26 23:19:40,924 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:19:40,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:19:40,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:19:40,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:19:40,927 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:19:40,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:19:40,928 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:19:40,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:19:40,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:19:40,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:19:40,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:19:40,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:19:40,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:19:40,930 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:19:40,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:19:40,930 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:19:40,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:19:40,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:19:40,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:19:40,931 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:19:40,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:19:40,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:19:40,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:19:40,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:19:40,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:19:40,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:19:40,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:19:40,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:19:40,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:19:40,934 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:19:41,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:19:41,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:19:41,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:19:41,503 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:19:41,504 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:19:41,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label02.c [2020-10-26 23:19:41,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7dcc5174/72208c944c624ec8ab86db9a2f9dec3d/FLAG093dd213e [2020-10-26 23:19:42,537 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:19:42,538 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label02.c [2020-10-26 23:19:42,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7dcc5174/72208c944c624ec8ab86db9a2f9dec3d/FLAG093dd213e [2020-10-26 23:19:42,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7dcc5174/72208c944c624ec8ab86db9a2f9dec3d [2020-10-26 23:19:42,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:19:42,742 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:19:42,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:19:42,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:19:42,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:19:42,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:19:42" (1/1) ... [2020-10-26 23:19:42,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1290a604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:42, skipping insertion in model container [2020-10-26 23:19:42,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:19:42" (1/1) ... [2020-10-26 23:19:42,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:19:42,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:19:43,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:19:43,407 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:19:43,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:19:43,719 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:19:43,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:43 WrapperNode [2020-10-26 23:19:43,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:19:43,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:19:43,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:19:43,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:19:43,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:43" (1/1) ... [2020-10-26 23:19:43,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:43" (1/1) ... [2020-10-26 23:19:43,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:43" (1/1) ... [2020-10-26 23:19:43,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:43" (1/1) ... [2020-10-26 23:19:43,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:43" (1/1) ... [2020-10-26 23:19:43,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:43" (1/1) ... [2020-10-26 23:19:43,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:43" (1/1) ... [2020-10-26 23:19:43,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:19:43,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:19:43,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:19:43,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:19:43,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:43" (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 [2020-10-26 23:19:44,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:19:44,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:19:44,042 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:19:44,042 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:19:44,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:19:44,043 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:19:44,043 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:19:44,044 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:19:44,045 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:19:44,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:19:44,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:19:44,047 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:19:44,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:19:44,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:19:44,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:19:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:19:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:19:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:19:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:19:46,433 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:19:46,434 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:19:46,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:19:46 BoogieIcfgContainer [2020-10-26 23:19:46,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:19:46,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:19:46,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:19:46,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:19:46,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:19:42" (1/3) ... [2020-10-26 23:19:46,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187815a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:19:46, skipping insertion in model container [2020-10-26 23:19:46,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:43" (2/3) ... [2020-10-26 23:19:46,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187815a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:19:46, skipping insertion in model container [2020-10-26 23:19:46,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:19:46" (3/3) ... [2020-10-26 23:19:46,451 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label02.c [2020-10-26 23:19:46,471 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:19:46,479 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:19:46,498 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:19:46,539 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:19:46,540 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:19:46,540 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:19:46,540 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:19:46,540 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:19:46,541 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:19:46,541 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:19:46,541 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:19:46,575 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:19:46,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-26 23:19:46,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:19:46,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:19:46,586 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:19:46,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:19:46,596 INFO L82 PathProgramCache]: Analyzing trace with hash 917780280, now seen corresponding path program 1 times [2020-10-26 23:19:46,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:19:46,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24594308] [2020-10-26 23:19:46,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:19:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:46,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:47,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:47,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-26 23:19:47,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:47,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-26 23:19:47,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:47,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:19:47,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:19:47,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 23:19:47,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:19:47,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:19:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:47,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:47,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:47,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:19:47,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:47,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:19:47,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:47,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:19:47,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:47,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:19:47,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:19:47,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:19:47,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24594308] [2020-10-26 23:19:47,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:19:47,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 23:19:47,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765857706] [2020-10-26 23:19:47,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:19:47,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:19:47,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:19:47,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:19:47,710 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 5 states. [2020-10-26 23:19:51,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:19:51,574 INFO L93 Difference]: Finished difference Result 891 states and 1619 transitions. [2020-10-26 23:19:51,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:19:51,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-26 23:19:51,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:19:51,601 INFO L225 Difference]: With dead ends: 891 [2020-10-26 23:19:51,601 INFO L226 Difference]: Without dead ends: 565 [2020-10-26 23:19:51,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:19:51,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-26 23:19:51,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 559. [2020-10-26 23:19:51,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-26 23:19:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 907 transitions. [2020-10-26 23:19:51,770 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 907 transitions. Word has length 16 [2020-10-26 23:19:51,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:19:51,771 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 907 transitions. [2020-10-26 23:19:51,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:19:51,771 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 907 transitions. [2020-10-26 23:19:51,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-26 23:19:51,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:19:51,777 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:19:51,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:19:51,777 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:19:51,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:19:51,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1209163356, now seen corresponding path program 1 times [2020-10-26 23:19:51,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:19:51,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502955085] [2020-10-26 23:19:51,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:19:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:51,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:52,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:53,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:53,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:19:53,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:19:53,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1294 [2020-10-26 23:19:53,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:19:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:19:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:19:53,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:19:53,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:19:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:53,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:53,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:53,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:19:53,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:53,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:19:53,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:53,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:19:53,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:53,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:19:53,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 23:19:53,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:19:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:53,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:53,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:53,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:19:53,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:53,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-26 23:19:53,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:53,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:19:53,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:19:53,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:19:53,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:53,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:19:53,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502955085] [2020-10-26 23:19:53,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:19:53,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 23:19:53,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320041281] [2020-10-26 23:19:53,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:19:53,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:19:53,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:19:53,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:19:53,776 INFO L87 Difference]: Start difference. First operand 559 states and 907 transitions. Second operand 8 states. [2020-10-26 23:19:57,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:19:57,807 INFO L93 Difference]: Finished difference Result 2248 states and 3777 transitions. [2020-10-26 23:19:57,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:19:57,808 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2020-10-26 23:19:57,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:19:57,825 INFO L225 Difference]: With dead ends: 2248 [2020-10-26 23:19:57,826 INFO L226 Difference]: Without dead ends: 1695 [2020-10-26 23:19:57,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:19:57,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2020-10-26 23:19:57,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 753. [2020-10-26 23:19:57,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-10-26 23:19:57,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1165 transitions. [2020-10-26 23:19:57,922 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1165 transitions. Word has length 85 [2020-10-26 23:19:57,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:19:57,923 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 1165 transitions. [2020-10-26 23:19:57,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:19:57,923 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1165 transitions. [2020-10-26 23:19:57,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-26 23:19:57,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:19:57,935 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:19:57,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:19:57,936 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:19:57,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:19:57,940 INFO L82 PathProgramCache]: Analyzing trace with hash 843727076, now seen corresponding path program 1 times [2020-10-26 23:19:57,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:19:57,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666443112] [2020-10-26 23:19:57,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:19:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:58,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:58,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:58,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-26 23:19:58,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:58,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 791 [2020-10-26 23:19:58,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:58,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:19:58,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:19:58,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 23:19:58,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:58,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:19:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:58,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:58,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:58,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:19:58,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:58,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:19:58,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:58,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:19:58,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:58,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:19:58,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:59,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:19:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:59,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:59,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:59,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:19:59,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:59,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-26 23:19:59,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:19:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:19:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:19:59,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:00,070 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:20:00,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666443112] [2020-10-26 23:20:00,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:20:00,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:20:00,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51940330] [2020-10-26 23:20:00,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:20:00,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:00,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:20:00,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:20:00,079 INFO L87 Difference]: Start difference. First operand 753 states and 1165 transitions. Second operand 7 states. [2020-10-26 23:20:03,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:03,161 INFO L93 Difference]: Finished difference Result 1934 states and 3111 transitions. [2020-10-26 23:20:03,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:20:03,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-10-26 23:20:03,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:03,175 INFO L225 Difference]: With dead ends: 1934 [2020-10-26 23:20:03,175 INFO L226 Difference]: Without dead ends: 1187 [2020-10-26 23:20:03,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:20:03,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2020-10-26 23:20:03,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1129. [2020-10-26 23:20:03,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2020-10-26 23:20:03,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1611 transitions. [2020-10-26 23:20:03,254 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1611 transitions. Word has length 181 [2020-10-26 23:20:03,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:03,255 INFO L481 AbstractCegarLoop]: Abstraction has 1129 states and 1611 transitions. [2020-10-26 23:20:03,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:20:03,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1611 transitions. [2020-10-26 23:20:03,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-26 23:20:03,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:03,261 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:20:03,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:20:03,262 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:03,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:03,263 INFO L82 PathProgramCache]: Analyzing trace with hash 2143226112, now seen corresponding path program 1 times [2020-10-26 23:20:03,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:03,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127393608] [2020-10-26 23:20:03,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:03,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:03,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:05,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:07,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:07,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-26 23:20:07,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:20:07,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4334 [2020-10-26 23:20:07,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:07,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:20:07,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:20:07,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:20:07,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:07,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:20:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:07,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:07,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:07,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:20:07,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:07,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:20:07,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:07,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:20:07,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:07,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:20:07,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:07,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:20:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:07,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:07,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:07,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:20:07,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:07,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 23:20:07,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:07,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:07,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:07,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:20:07,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:20:08,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 23:20:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:08,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:08,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:08,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:20:08,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:08,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 23:20:08,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:08,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:08,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-26 23:20:08,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:08,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:08,353 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:20:08,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127393608] [2020-10-26 23:20:08,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:20:08,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:20:08,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79068432] [2020-10-26 23:20:08,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:20:08,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:08,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:20:08,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:20:08,357 INFO L87 Difference]: Start difference. First operand 1129 states and 1611 transitions. Second operand 7 states. [2020-10-26 23:20:10,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:10,955 INFO L93 Difference]: Finished difference Result 2634 states and 3732 transitions. [2020-10-26 23:20:10,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:20:10,956 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2020-10-26 23:20:10,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:10,966 INFO L225 Difference]: With dead ends: 2634 [2020-10-26 23:20:10,967 INFO L226 Difference]: Without dead ends: 1511 [2020-10-26 23:20:10,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:20:10,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2020-10-26 23:20:11,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1503. [2020-10-26 23:20:11,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1503 states. [2020-10-26 23:20:11,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 2035 transitions. [2020-10-26 23:20:11,034 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 2035 transitions. Word has length 254 [2020-10-26 23:20:11,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:11,035 INFO L481 AbstractCegarLoop]: Abstraction has 1503 states and 2035 transitions. [2020-10-26 23:20:11,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:20:11,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 2035 transitions. [2020-10-26 23:20:11,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-26 23:20:11,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:11,042 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:20:11,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:20:11,043 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:11,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:11,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1536117172, now seen corresponding path program 1 times [2020-10-26 23:20:11,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:11,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953036811] [2020-10-26 23:20:11,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:11,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:11,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:11,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:13,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:16,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:16,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-26 23:20:16,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:20:16,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-26 23:20:16,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:20:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:20:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-26 23:20:16,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:16,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:20:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:16,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:16,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:16,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:20:16,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:16,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:20:16,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:16,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:20:16,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:16,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:20:16,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:16,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:20:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:16,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:16,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:16,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:20:16,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:16,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 23:20:16,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:16,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:16,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:16,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:20:16,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:16,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:20:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:16,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:16,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:16,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:20:16,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:16,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 23:20:16,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:16,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:20:16,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:16,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:20:16,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:16,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-26 23:20:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:16,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:17,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:17,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:17,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:20:17,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:20:17,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-26 23:20:17,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:17,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:17,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:17,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:20:17,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:20:18,562 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 85 proven. 97 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-26 23:20:18,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953036811] [2020-10-26 23:20:18,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:20:18,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:20:18,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291810112] [2020-10-26 23:20:18,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:20:18,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:18,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:20:18,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:20:18,565 INFO L87 Difference]: Start difference. First operand 1503 states and 2035 transitions. Second operand 9 states. [2020-10-26 23:20:19,014 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-10-26 23:20:22,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:22,793 INFO L93 Difference]: Finished difference Result 3118 states and 4509 transitions. [2020-10-26 23:20:22,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 23:20:22,794 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 338 [2020-10-26 23:20:22,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:22,809 INFO L225 Difference]: With dead ends: 3118 [2020-10-26 23:20:22,809 INFO L226 Difference]: Without dead ends: 2112 [2020-10-26 23:20:22,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-10-26 23:20:22,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2020-10-26 23:20:22,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 2059. [2020-10-26 23:20:22,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2059 states. [2020-10-26 23:20:22,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 2534 transitions. [2020-10-26 23:20:22,890 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 2534 transitions. Word has length 338 [2020-10-26 23:20:22,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:22,891 INFO L481 AbstractCegarLoop]: Abstraction has 2059 states and 2534 transitions. [2020-10-26 23:20:22,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:20:22,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 2534 transitions. [2020-10-26 23:20:22,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-10-26 23:20:22,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:22,901 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:20:22,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:20:22,902 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:22,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:22,902 INFO L82 PathProgramCache]: Analyzing trace with hash 770158020, now seen corresponding path program 1 times [2020-10-26 23:20:22,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:22,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699702365] [2020-10-26 23:20:22,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:23,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:23,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:23,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:24,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:27,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:27,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 414 [2020-10-26 23:20:27,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:20:27,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 23:20:27,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:20:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:20:27,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:28,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:20:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:28,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:28,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:28,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:20:28,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:28,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:20:28,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:28,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:28,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:28,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:28,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:28,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:20:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:28,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:28,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:28,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:20:28,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:28,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:20:28,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:28,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:20:28,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:28,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:20:28,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:20:28,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:20:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:28,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:28,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:28,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:20:28,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:28,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-26 23:20:28,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:28,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:28,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:28,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:20:28,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:28,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-26 23:20:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:28,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:28,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:28,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:20:28,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:28,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 23:20:28,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:28,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:28,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-26 23:20:28,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:28,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 109 proven. 132 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-26 23:20:29,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699702365] [2020-10-26 23:20:29,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:20:29,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:20:29,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035954181] [2020-10-26 23:20:29,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:20:29,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:29,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:20:29,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:20:29,227 INFO L87 Difference]: Start difference. First operand 2059 states and 2534 transitions. Second operand 7 states. [2020-10-26 23:20:31,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:31,788 INFO L93 Difference]: Finished difference Result 4518 states and 5737 transitions. [2020-10-26 23:20:31,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:20:31,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 398 [2020-10-26 23:20:31,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:31,808 INFO L225 Difference]: With dead ends: 4518 [2020-10-26 23:20:31,809 INFO L226 Difference]: Without dead ends: 2463 [2020-10-26 23:20:31,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:20:31,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2463 states. [2020-10-26 23:20:31,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2463 to 2065. [2020-10-26 23:20:31,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2065 states. [2020-10-26 23:20:31,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 2411 transitions. [2020-10-26 23:20:31,910 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 2411 transitions. Word has length 398 [2020-10-26 23:20:31,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:31,911 INFO L481 AbstractCegarLoop]: Abstraction has 2065 states and 2411 transitions. [2020-10-26 23:20:31,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:20:31,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 2411 transitions. [2020-10-26 23:20:31,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-10-26 23:20:31,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:31,923 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:20:31,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:20:31,923 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:31,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:31,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1858020112, now seen corresponding path program 1 times [2020-10-26 23:20:31,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:31,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035046366] [2020-10-26 23:20:31,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:32,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:32,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:33,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:33,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:37,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:37,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-26 23:20:37,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:20:37,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-26 23:20:37,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:37,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:20:37,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:20:37,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-26 23:20:37,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:37,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:20:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:37,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:37,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:37,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:20:37,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:37,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:20:37,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:37,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:20:37,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:37,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:20:37,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:37,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:20:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:37,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:37,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:37,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:20:37,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:37,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-26 23:20:37,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:37,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:37,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:37,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:20:37,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:37,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:20:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:37,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:37,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:37,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:20:37,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:37,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-26 23:20:37,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:20:37,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:38,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-26 23:20:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:38,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:38,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:38,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:20:38,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:38,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-26 23:20:38,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:38,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:38,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-26 23:20:38,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:38,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 29 proven. 338 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 23:20:39,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035046366] [2020-10-26 23:20:39,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:20:39,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:20:39,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420939931] [2020-10-26 23:20:39,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:20:39,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:39,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:20:39,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:20:39,201 INFO L87 Difference]: Start difference. First operand 2065 states and 2411 transitions. Second operand 8 states. [2020-10-26 23:20:41,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:41,649 INFO L93 Difference]: Finished difference Result 3984 states and 4700 transitions. [2020-10-26 23:20:41,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:20:41,650 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 424 [2020-10-26 23:20:41,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:41,664 INFO L225 Difference]: With dead ends: 3984 [2020-10-26 23:20:41,664 INFO L226 Difference]: Without dead ends: 2107 [2020-10-26 23:20:41,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:20:41,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2107 states. [2020-10-26 23:20:41,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2107 to 2071. [2020-10-26 23:20:41,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2071 states. [2020-10-26 23:20:41,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2417 transitions. [2020-10-26 23:20:41,747 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2417 transitions. Word has length 424 [2020-10-26 23:20:41,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:41,748 INFO L481 AbstractCegarLoop]: Abstraction has 2071 states and 2417 transitions. [2020-10-26 23:20:41,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:20:41,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2417 transitions. [2020-10-26 23:20:41,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2020-10-26 23:20:41,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:41,762 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:20:41,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:20:41,763 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:41,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:41,764 INFO L82 PathProgramCache]: Analyzing trace with hash -993048556, now seen corresponding path program 1 times [2020-10-26 23:20:41,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:41,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680826322] [2020-10-26 23:20:41,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:41,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:42,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:43,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:44,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:45,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:45,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-26 23:20:45,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:20:45,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3311 [2020-10-26 23:20:45,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:45,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:20:45,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:20:45,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 254 [2020-10-26 23:20:45,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:45,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:20:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:45,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:45,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:45,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:20:45,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:45,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:20:45,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:45,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:45,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:45,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:45,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:45,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:20:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:45,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:45,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:45,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:20:45,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:45,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:20:45,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:45,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:45,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:20:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:45,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:45,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:45,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:20:45,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:45,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-26 23:20:45,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:45,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:20:45,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:45,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:20:45,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:45,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:20:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:45,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:45,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:45,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:45,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:20:45,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:20:45,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-26 23:20:45,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:20:45,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:45,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-26 23:20:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:45,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:46,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:46,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:20:46,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:46,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-26 23:20:46,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:46,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:46,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:20:46,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:46,699 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 491 proven. 6 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 23:20:46,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680826322] [2020-10-26 23:20:46,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:20:46,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:20:46,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938354721] [2020-10-26 23:20:46,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:20:46,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:46,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:20:46,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:20:46,703 INFO L87 Difference]: Start difference. First operand 2071 states and 2417 transitions. Second operand 8 states. [2020-10-26 23:20:49,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:49,223 INFO L93 Difference]: Finished difference Result 4732 states and 5702 transitions. [2020-10-26 23:20:49,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:20:49,230 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 484 [2020-10-26 23:20:49,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:49,246 INFO L225 Difference]: With dead ends: 4732 [2020-10-26 23:20:49,247 INFO L226 Difference]: Without dead ends: 2653 [2020-10-26 23:20:49,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:20:49,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2653 states. [2020-10-26 23:20:49,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2653 to 2623. [2020-10-26 23:20:49,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2623 states. [2020-10-26 23:20:49,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 2906 transitions. [2020-10-26 23:20:49,344 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 2906 transitions. Word has length 484 [2020-10-26 23:20:49,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:49,345 INFO L481 AbstractCegarLoop]: Abstraction has 2623 states and 2906 transitions. [2020-10-26 23:20:49,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:20:49,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 2906 transitions. [2020-10-26 23:20:49,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2020-10-26 23:20:49,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:49,366 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:20:49,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:20:49,366 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:49,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:49,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1102831356, now seen corresponding path program 1 times [2020-10-26 23:20:49,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:49,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091549147] [2020-10-26 23:20:49,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:49,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:49,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:49,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:53,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:53,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:54,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:54,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 627 [2020-10-26 23:20:54,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:20:54,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-26 23:20:54,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:54,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:20:54,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:20:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 452 [2020-10-26 23:20:54,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:54,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:20:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:54,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:54,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:54,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:20:54,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:54,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:20:54,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:54,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:20:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:20:54,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:54,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:20:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:54,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:54,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:54,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:54,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:20:54,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:20:54,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-26 23:20:54,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:54,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:54,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:54,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:20:54,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:55,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:20:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:55,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:55,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:55,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:55,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:20:55,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:20:55,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-26 23:20:55,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:55,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:55,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:55,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:20:55,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:55,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:20:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:55,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:55,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:55,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:55,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:20:55,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:20:55,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-26 23:20:55,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:55,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:55,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:55,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:20:55,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:55,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:20:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:55,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:55,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:55,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:20:55,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:55,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-26 23:20:55,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:55,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:20:55,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:55,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-10-26 23:20:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:55,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:55,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:55,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-26 23:20:55,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:55,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:20:55,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:55,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:55,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-26 23:20:55,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:55,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:56,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 55 proven. 426 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2020-10-26 23:20:56,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091549147] [2020-10-26 23:20:56,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:20:56,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:20:56,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524507322] [2020-10-26 23:20:56,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:20:56,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:56,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:20:56,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:20:56,219 INFO L87 Difference]: Start difference. First operand 2623 states and 2906 transitions. Second operand 8 states. [2020-10-26 23:20:58,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:58,473 INFO L93 Difference]: Finished difference Result 5672 states and 6626 transitions. [2020-10-26 23:20:58,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:20:58,474 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 607 [2020-10-26 23:20:58,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:58,499 INFO L225 Difference]: With dead ends: 5672 [2020-10-26 23:20:58,499 INFO L226 Difference]: Without dead ends: 3421 [2020-10-26 23:20:58,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:20:58,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3421 states. [2020-10-26 23:20:58,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3421 to 3383. [2020-10-26 23:20:58,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3383 states. [2020-10-26 23:20:58,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3383 states to 3383 states and 3771 transitions. [2020-10-26 23:20:58,635 INFO L78 Accepts]: Start accepts. Automaton has 3383 states and 3771 transitions. Word has length 607 [2020-10-26 23:20:58,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:58,636 INFO L481 AbstractCegarLoop]: Abstraction has 3383 states and 3771 transitions. [2020-10-26 23:20:58,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:20:58,636 INFO L276 IsEmpty]: Start isEmpty. Operand 3383 states and 3771 transitions. [2020-10-26 23:20:58,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2020-10-26 23:20:58,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:58,659 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:20:58,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:20:58,660 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:58,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:58,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1783289452, now seen corresponding path program 1 times [2020-10-26 23:20:58,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:58,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114942221] [2020-10-26 23:20:58,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:58,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:58,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:59,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:00,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:01,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:03,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:03,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 663 [2020-10-26 23:21:03,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:21:03,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-26 23:21:03,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:03,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:21:03,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:21:03,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:21:03,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:21:03,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:03,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:03,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:03,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:03,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:03,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:21:03,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:03,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:03,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:03,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:03,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:21:03,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:21:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:03,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:04,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:04,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:21:04,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:04,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:21:04,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:04,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:04,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:04,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:04,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:04,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:21:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:04,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:04,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:04,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:21:04,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:04,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 23:21:04,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:04,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:04,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:04,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:21:04,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:04,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:21:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:04,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:04,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:04,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:04,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:21:04,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:21:04,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-26 23:21:04,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:04,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:04,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:04,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:21:04,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:04,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:21:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:04,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:04,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:04,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:21:04,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:04,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-26 23:21:04,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:04,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:21:04,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:04,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:21:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:04,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:04,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:04,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:21:04,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:04,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:21:04,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:04,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:04,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-26 23:21:04,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:04,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1159 backedges. 485 proven. 241 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2020-10-26 23:21:05,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114942221] [2020-10-26 23:21:05,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:21:05,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:21:05,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437393732] [2020-10-26 23:21:05,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:21:05,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:21:05,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:21:05,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:21:05,274 INFO L87 Difference]: Start difference. First operand 3383 states and 3771 transitions. Second operand 7 states. [2020-10-26 23:21:08,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:21:08,303 INFO L93 Difference]: Finished difference Result 6778 states and 7583 transitions. [2020-10-26 23:21:08,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:21:08,304 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 643 [2020-10-26 23:21:08,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:21:08,321 INFO L225 Difference]: With dead ends: 6778 [2020-10-26 23:21:08,322 INFO L226 Difference]: Without dead ends: 3767 [2020-10-26 23:21:08,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:21:08,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2020-10-26 23:21:08,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 3753. [2020-10-26 23:21:08,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3753 states. [2020-10-26 23:21:08,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3753 states to 3753 states and 4150 transitions. [2020-10-26 23:21:08,441 INFO L78 Accepts]: Start accepts. Automaton has 3753 states and 4150 transitions. Word has length 643 [2020-10-26 23:21:08,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:21:08,442 INFO L481 AbstractCegarLoop]: Abstraction has 3753 states and 4150 transitions. [2020-10-26 23:21:08,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:21:08,442 INFO L276 IsEmpty]: Start isEmpty. Operand 3753 states and 4150 transitions. [2020-10-26 23:21:08,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2020-10-26 23:21:08,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:21:08,451 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:21:08,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:21:08,452 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:21:08,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:21:08,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1798669772, now seen corresponding path program 1 times [2020-10-26 23:21:08,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:21:08,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305873496] [2020-10-26 23:21:08,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:21:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:08,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:08,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:09,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:09,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:10,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:13,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:13,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-26 23:21:13,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:21:13,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-26 23:21:13,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:13,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:21:13,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:21:13,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 674 [2020-10-26 23:21:13,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:13,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:13,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:13,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:13,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:13,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:13,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:21:13,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:13,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:13,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:13,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:21:13,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:13,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:21:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:13,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:13,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:13,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:13,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:21:13,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:21:13,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-26 23:21:13,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:13,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:13,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:13,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:21:13,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:13,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:21:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:13,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:14,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:14,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:14,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:21:14,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:21:14,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 23:21:14,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:14,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:14,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:14,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:21:14,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:14,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:21:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:14,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:14,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:14,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:14,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:21:14,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:21:14,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 23:21:14,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:21:14,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:14,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:21:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:14,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:14,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:14,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:14,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:21:14,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:21:14,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-26 23:21:14,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:14,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:14,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:14,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-26 23:21:14,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:14,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:21:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:14,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:14,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:14,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:21:14,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:14,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-26 23:21:14,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:14,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:14,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:14,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:21:14,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 511 proven. 426 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2020-10-26 23:21:15,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305873496] [2020-10-26 23:21:15,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:21:15,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:21:15,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686247812] [2020-10-26 23:21:15,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:21:15,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:21:15,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:21:15,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:21:15,942 INFO L87 Difference]: Start difference. First operand 3753 states and 4150 transitions. Second operand 9 states. [2020-10-26 23:21:17,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:21:17,939 INFO L93 Difference]: Finished difference Result 7900 states and 8879 transitions. [2020-10-26 23:21:17,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:21:17,940 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 676 [2020-10-26 23:21:17,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:21:17,963 INFO L225 Difference]: With dead ends: 7900 [2020-10-26 23:21:17,964 INFO L226 Difference]: Without dead ends: 4519 [2020-10-26 23:21:17,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:21:17,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4519 states. [2020-10-26 23:21:18,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4519 to 4483. [2020-10-26 23:21:18,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4483 states. [2020-10-26 23:21:18,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4483 states to 4483 states and 4962 transitions. [2020-10-26 23:21:18,133 INFO L78 Accepts]: Start accepts. Automaton has 4483 states and 4962 transitions. Word has length 676 [2020-10-26 23:21:18,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:21:18,135 INFO L481 AbstractCegarLoop]: Abstraction has 4483 states and 4962 transitions. [2020-10-26 23:21:18,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:21:18,135 INFO L276 IsEmpty]: Start isEmpty. Operand 4483 states and 4962 transitions. [2020-10-26 23:21:18,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2020-10-26 23:21:18,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:21:18,149 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:21:18,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:21:18,150 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:21:18,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:21:18,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1476708784, now seen corresponding path program 1 times [2020-10-26 23:21:18,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:21:18,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831157165] [2020-10-26 23:21:18,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:21:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:18,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:18,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:21,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:23,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:23,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 771 [2020-10-26 23:21:23,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:21:23,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4795 [2020-10-26 23:21:23,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:21:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:21:23,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:23,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:23,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:23,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:23,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:23,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:23,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:21:23,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:23,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:23,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:21:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:23,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:23,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:23,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:21:23,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:23,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:21:23,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:23,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:23,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:23,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:23,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:23,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:21:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:23,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:23,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:23,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:21:23,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:23,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 23:21:23,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:23,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:23,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:23,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:23,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:23,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:21:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:23,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:23,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:23,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:21:23,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:23,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:21:23,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:23,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:23,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:21:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:23,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:23,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:23,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:21:23,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:23,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-26 23:21:23,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:21:23,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:23,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:21:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:23,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:23,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:23,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:21:23,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:23,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 23:21:23,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:23,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:23,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:23,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:21:23,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:23,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-10-26 23:21:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:23,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:23,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:23,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:21:23,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:23,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 23:21:23,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:23,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-26 23:21:23,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:23,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:24,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 359 proven. 72 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2020-10-26 23:21:24,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831157165] [2020-10-26 23:21:24,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:21:24,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:21:24,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718957253] [2020-10-26 23:21:24,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:21:24,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:21:24,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:21:24,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:21:24,293 INFO L87 Difference]: Start difference. First operand 4483 states and 4962 transitions. Second operand 7 states. [2020-10-26 23:21:26,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:21:26,504 INFO L93 Difference]: Finished difference Result 8812 states and 9886 transitions. [2020-10-26 23:21:26,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:21:26,505 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 749 [2020-10-26 23:21:26,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:21:26,533 INFO L225 Difference]: With dead ends: 8812 [2020-10-26 23:21:26,533 INFO L226 Difference]: Without dead ends: 4701 [2020-10-26 23:21:26,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:21:26,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4701 states. [2020-10-26 23:21:26,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4701 to 4669. [2020-10-26 23:21:26,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4669 states. [2020-10-26 23:21:26,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4669 states to 4669 states and 5167 transitions. [2020-10-26 23:21:26,687 INFO L78 Accepts]: Start accepts. Automaton has 4669 states and 5167 transitions. Word has length 749 [2020-10-26 23:21:26,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:21:26,688 INFO L481 AbstractCegarLoop]: Abstraction has 4669 states and 5167 transitions. [2020-10-26 23:21:26,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:21:26,688 INFO L276 IsEmpty]: Start isEmpty. Operand 4669 states and 5167 transitions. [2020-10-26 23:21:26,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2020-10-26 23:21:26,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:21:26,701 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:21:26,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:21:26,701 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:21:26,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:21:26,702 INFO L82 PathProgramCache]: Analyzing trace with hash 4731020, now seen corresponding path program 1 times [2020-10-26 23:21:26,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:21:26,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342302966] [2020-10-26 23:21:26,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:21:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:26,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:27,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:27,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:27,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:31,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:31,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 789 [2020-10-26 23:21:31,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:21:31,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-26 23:21:31,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:31,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:31,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:21:31,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:21:31,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:32,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:32,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:32,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:32,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:32,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:32,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:21:32,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:32,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:32,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:32,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:32,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:32,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:21:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:32,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:32,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:32,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:21:32,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:32,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:21:32,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:32,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:32,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:32,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:32,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:32,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:21:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:32,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:32,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:32,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:21:32,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:32,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:21:32,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:32,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:32,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:21:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:32,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:32,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:32,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:21:32,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:32,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:21:32,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:21:32,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:32,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:21:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:32,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:32,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:32,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:21:32,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:32,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-26 23:21:32,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:32,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:32,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:32,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:21:32,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:32,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:21:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:32,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:32,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:32,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:21:32,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:32,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:21:32,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:21:32,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:32,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:32,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2020-10-26 23:21:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:32,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:32,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:32,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:21:32,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:32,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:21:32,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-26 23:21:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:32,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:33,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 409 proven. 234 refuted. 0 times theorem prover too weak. 935 trivial. 0 not checked. [2020-10-26 23:21:33,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342302966] [2020-10-26 23:21:33,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:21:33,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:21:33,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003683906] [2020-10-26 23:21:33,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:21:33,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:21:33,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:21:33,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:21:33,127 INFO L87 Difference]: Start difference. First operand 4669 states and 5167 transitions. Second operand 7 states. [2020-10-26 23:21:35,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:21:35,444 INFO L93 Difference]: Finished difference Result 8972 states and 9965 transitions. [2020-10-26 23:21:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:21:35,445 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 767 [2020-10-26 23:21:35,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:21:35,459 INFO L225 Difference]: With dead ends: 8972 [2020-10-26 23:21:35,459 INFO L226 Difference]: Without dead ends: 4675 [2020-10-26 23:21:35,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:21:35,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4675 states. [2020-10-26 23:21:35,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4675 to 4123. [2020-10-26 23:21:35,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4123 states. [2020-10-26 23:21:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4123 states to 4123 states and 4475 transitions. [2020-10-26 23:21:35,567 INFO L78 Accepts]: Start accepts. Automaton has 4123 states and 4475 transitions. Word has length 767 [2020-10-26 23:21:35,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:21:35,568 INFO L481 AbstractCegarLoop]: Abstraction has 4123 states and 4475 transitions. [2020-10-26 23:21:35,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:21:35,568 INFO L276 IsEmpty]: Start isEmpty. Operand 4123 states and 4475 transitions. [2020-10-26 23:21:35,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2020-10-26 23:21:35,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:21:35,580 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:21:35,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:21:35,580 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:21:35,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:21:35,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1650941092, now seen corresponding path program 1 times [2020-10-26 23:21:35,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:21:35,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292560025] [2020-10-26 23:21:35,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:21:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:35,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:35,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:37,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:39,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:39,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 812 [2020-10-26 23:21:39,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:21:39,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3667 [2020-10-26 23:21:39,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:39,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:39,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:21:39,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 23:21:39,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:39,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:39,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:39,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:39,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:39,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:39,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:21:39,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:39,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:39,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:21:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:39,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:39,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:39,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:21:39,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:39,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:21:39,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:39,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:39,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:39,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:39,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:39,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:21:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:39,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:39,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:39,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:21:39,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:39,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:21:39,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:39,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:39,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:21:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:39,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:39,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:39,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:21:39,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:39,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:21:39,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:39,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:39,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:39,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:39,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:39,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:21:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:39,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:39,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:39,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:21:39,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:39,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:21:39,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:39,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:39,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:39,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:21:39,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:39,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:21:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:39,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:39,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:39,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:21:39,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:39,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:21:39,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:21:39,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:39,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 617 [2020-10-26 23:21:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:39,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:40,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:40,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:21:40,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:40,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:21:40,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:40,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:40,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-26 23:21:40,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:40,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:40,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1768 backedges. 514 proven. 113 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2020-10-26 23:21:40,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292560025] [2020-10-26 23:21:40,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:21:40,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:21:40,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912709970] [2020-10-26 23:21:40,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:21:40,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:21:40,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:21:40,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:21:40,405 INFO L87 Difference]: Start difference. First operand 4123 states and 4475 transitions. Second operand 7 states. [2020-10-26 23:21:42,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:21:42,375 INFO L93 Difference]: Finished difference Result 9548 states and 10479 transitions. [2020-10-26 23:21:42,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:21:42,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 790 [2020-10-26 23:21:42,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:21:42,395 INFO L225 Difference]: With dead ends: 9548 [2020-10-26 23:21:42,395 INFO L226 Difference]: Without dead ends: 5797 [2020-10-26 23:21:42,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:21:42,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5797 states. [2020-10-26 23:21:42,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5797 to 5241. [2020-10-26 23:21:42,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5241 states. [2020-10-26 23:21:42,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5241 states to 5241 states and 5751 transitions. [2020-10-26 23:21:42,532 INFO L78 Accepts]: Start accepts. Automaton has 5241 states and 5751 transitions. Word has length 790 [2020-10-26 23:21:42,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:21:42,533 INFO L481 AbstractCegarLoop]: Abstraction has 5241 states and 5751 transitions. [2020-10-26 23:21:42,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:21:42,533 INFO L276 IsEmpty]: Start isEmpty. Operand 5241 states and 5751 transitions. [2020-10-26 23:21:42,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2020-10-26 23:21:42,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:21:42,547 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:21:42,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:21:42,548 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:21:42,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:21:42,548 INFO L82 PathProgramCache]: Analyzing trace with hash 107927276, now seen corresponding path program 1 times [2020-10-26 23:21:42,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:21:42,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224774930] [2020-10-26 23:21:42,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:21:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:42,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:42,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:45,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:47,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:47,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 946 [2020-10-26 23:21:47,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:21:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-26 23:21:47,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-26 23:21:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:21:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:47,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:47,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:47,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:47,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:47,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:47,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:21:47,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:47,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:47,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:47,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:47,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:47,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:21:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:47,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:47,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:47,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:21:47,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:47,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:21:47,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:47,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:47,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:47,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:47,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:47,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:21:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:47,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:47,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:47,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:21:47,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:47,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:21:47,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:47,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:47,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:47,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:47,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:47,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:21:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:47,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:48,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:48,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:21:48,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:48,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:21:48,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:48,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:48,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:48,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:48,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:48,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:21:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:48,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:48,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:48,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:21:48,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:48,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:21:48,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:48,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:48,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:48,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:48,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:48,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:21:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:48,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:48,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:48,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:21:48,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:48,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 23:21:48,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:48,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:48,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:48,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 23:21:48,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:48,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:21:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:48,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:48,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:48,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:21:48,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:48,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-26 23:21:48,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:21:48,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:48,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2020-10-26 23:21:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:48,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:48,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:48,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:21:48,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:48,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:21:48,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:48,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:48,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-26 23:21:48,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:48,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2313 backedges. 446 proven. 72 refuted. 0 times theorem prover too weak. 1795 trivial. 0 not checked. [2020-10-26 23:21:49,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224774930] [2020-10-26 23:21:49,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:21:49,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:21:49,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402291281] [2020-10-26 23:21:49,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:21:49,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:21:49,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:21:49,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:21:49,170 INFO L87 Difference]: Start difference. First operand 5241 states and 5751 transitions. Second operand 7 states. [2020-10-26 23:21:51,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:21:51,285 INFO L93 Difference]: Finished difference Result 10480 states and 11560 transitions. [2020-10-26 23:21:51,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:21:51,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 922 [2020-10-26 23:21:51,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:21:51,320 INFO L225 Difference]: With dead ends: 10480 [2020-10-26 23:21:51,320 INFO L226 Difference]: Without dead ends: 5427 [2020-10-26 23:21:51,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:21:51,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5427 states. [2020-10-26 23:21:51,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5427 to 5241. [2020-10-26 23:21:51,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5241 states. [2020-10-26 23:21:51,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5241 states to 5241 states and 5759 transitions. [2020-10-26 23:21:51,470 INFO L78 Accepts]: Start accepts. Automaton has 5241 states and 5759 transitions. Word has length 922 [2020-10-26 23:21:51,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:21:51,471 INFO L481 AbstractCegarLoop]: Abstraction has 5241 states and 5759 transitions. [2020-10-26 23:21:51,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:21:51,472 INFO L276 IsEmpty]: Start isEmpty. Operand 5241 states and 5759 transitions. [2020-10-26 23:21:51,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 930 [2020-10-26 23:21:51,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:21:51,492 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:21:51,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:21:51,493 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:21:51,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:21:51,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1223436684, now seen corresponding path program 1 times [2020-10-26 23:21:51,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:21:51,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127944082] [2020-10-26 23:21:51,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:21:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:51,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:52,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:52,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:55,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:56,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:56,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 955 [2020-10-26 23:21:56,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:21:56,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 23:21:56,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:56,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:21:56,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:21:56,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-26 23:21:56,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:56,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:56,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:56,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:56,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:56,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:56,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:21:56,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:56,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:56,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:21:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:56,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:56,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:56,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:21:56,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:56,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:21:56,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:56,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:56,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:56,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:56,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:56,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:21:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:56,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:56,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:56,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:21:56,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:56,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:21:56,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:56,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:56,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:56,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:56,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:56,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:21:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:56,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:56,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:56,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:21:56,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:56,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:21:56,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:56,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:56,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:56,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:56,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:57,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:21:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:57,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:57,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:57,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:21:57,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:57,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:21:57,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:57,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:57,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:57,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:57,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:57,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:21:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:57,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:57,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:57,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:21:57,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:57,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 23:21:57,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:57,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:57,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:57,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:21:57,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:57,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:21:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:57,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:57,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:57,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:57,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:21:57,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:21:57,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 23:21:57,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:57,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:57,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:57,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:21:57,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:57,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-26 23:21:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:57,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:57,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:57,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:21:57,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:57,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:21:57,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:57,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:57,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:57,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:21:57,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:57,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 756 [2020-10-26 23:21:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:57,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:57,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:57,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:21:57,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:57,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:21:57,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-26 23:21:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:57,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:58,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2631 backedges. 922 proven. 152 refuted. 0 times theorem prover too weak. 1557 trivial. 0 not checked. [2020-10-26 23:21:58,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127944082] [2020-10-26 23:21:58,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:21:58,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:21:58,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234554546] [2020-10-26 23:21:58,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:21:58,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:21:58,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:21:58,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:21:58,272 INFO L87 Difference]: Start difference. First operand 5241 states and 5759 transitions. Second operand 8 states. [2020-10-26 23:22:00,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:00,190 INFO L93 Difference]: Finished difference Result 10478 states and 11523 transitions. [2020-10-26 23:22:00,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:22:00,191 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 929 [2020-10-26 23:22:00,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:00,210 INFO L225 Difference]: With dead ends: 10478 [2020-10-26 23:22:00,210 INFO L226 Difference]: Without dead ends: 5609 [2020-10-26 23:22:00,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:22:00,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5609 states. [2020-10-26 23:22:00,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5609 to 5239. [2020-10-26 23:22:00,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5239 states. [2020-10-26 23:22:00,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5239 states to 5239 states and 5749 transitions. [2020-10-26 23:22:00,351 INFO L78 Accepts]: Start accepts. Automaton has 5239 states and 5749 transitions. Word has length 929 [2020-10-26 23:22:00,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:00,352 INFO L481 AbstractCegarLoop]: Abstraction has 5239 states and 5749 transitions. [2020-10-26 23:22:00,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:22:00,352 INFO L276 IsEmpty]: Start isEmpty. Operand 5239 states and 5749 transitions. [2020-10-26 23:22:00,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2020-10-26 23:22:00,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:00,368 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:00,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:22:00,369 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:00,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:00,369 INFO L82 PathProgramCache]: Analyzing trace with hash -2118627152, now seen corresponding path program 1 times [2020-10-26 23:22:00,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:00,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566344611] [2020-10-26 23:22:00,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:00,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:01,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:04,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:05,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:05,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 991 [2020-10-26 23:22:05,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:22:05,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-26 23:22:05,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:22:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:22:05,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:22:05,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:05,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:05,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:05,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:05,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:05,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:05,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:22:05,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:05,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:05,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:05,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:05,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:05,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:05,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:05,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:05,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:22:05,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:05,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:22:05,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:05,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:05,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:22:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:05,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:05,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:05,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:22:05,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:05,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:22:05,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:05,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:05,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:05,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:05,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:05,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:22:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:05,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:05,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:05,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:22:05,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:05,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:22:05,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:05,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:06,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:22:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:06,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:06,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:06,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:22:06,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:06,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:22:06,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:06,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:06,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:06,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:06,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:06,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:22:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:06,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:06,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:06,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:22:06,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:06,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:22:06,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:06,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:06,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:22:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:06,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:06,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:06,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:22:06,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:06,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:22:06,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:06,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:06,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:06,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:22:06,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:06,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:22:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:06,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:06,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:06,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:22:06,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:06,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 23:22:06,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:22:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:22:06,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:06,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-26 23:22:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:06,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:06,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:06,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:06,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:22:06,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:06,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-26 23:22:06,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:06,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:06,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:06,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:22:06,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2808 backedges. 1329 proven. 113 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:22:07,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566344611] [2020-10-26 23:22:07,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:07,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:22:07,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761910789] [2020-10-26 23:22:07,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:22:07,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:07,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:22:07,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:22:07,817 INFO L87 Difference]: Start difference. First operand 5239 states and 5749 transitions. Second operand 10 states. [2020-10-26 23:22:11,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:11,197 INFO L93 Difference]: Finished difference Result 11453 states and 12720 transitions. [2020-10-26 23:22:11,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:22:11,208 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 965 [2020-10-26 23:22:11,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:11,228 INFO L225 Difference]: With dead ends: 11453 [2020-10-26 23:22:11,228 INFO L226 Difference]: Without dead ends: 6551 [2020-10-26 23:22:11,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-10-26 23:22:11,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6551 states. [2020-10-26 23:22:11,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6551 to 5989. [2020-10-26 23:22:11,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5989 states. [2020-10-26 23:22:11,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5989 states to 5989 states and 6664 transitions. [2020-10-26 23:22:11,461 INFO L78 Accepts]: Start accepts. Automaton has 5989 states and 6664 transitions. Word has length 965 [2020-10-26 23:22:11,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:11,462 INFO L481 AbstractCegarLoop]: Abstraction has 5989 states and 6664 transitions. [2020-10-26 23:22:11,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:22:11,463 INFO L276 IsEmpty]: Start isEmpty. Operand 5989 states and 6664 transitions. [2020-10-26 23:22:11,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2020-10-26 23:22:11,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:11,479 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:11,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:22:11,480 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:11,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:11,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1438945592, now seen corresponding path program 1 times [2020-10-26 23:22:11,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:11,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714928023] [2020-10-26 23:22:11,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:11,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:12,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:13,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:16,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:16,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1024 [2020-10-26 23:22:16,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:22:16,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-26 23:22:16,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:16,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:22:16,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:22:16,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-26 23:22:16,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:16,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:16,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:16,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:16,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:16,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:16,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:22:16,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:16,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:16,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:16,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:16,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:16,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:22:16,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:16,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:22:16,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:16,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:16,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:16,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:16,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:16,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:22:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:16,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:17,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:17,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:22:17,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:17,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:22:17,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:17,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:17,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:17,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:17,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:17,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:22:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:17,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:17,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:17,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:22:17,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:17,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:22:17,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:17,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:17,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:22:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:17,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:17,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:17,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:22:17,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:17,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:22:17,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:17,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:17,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:17,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:17,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:17,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:22:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:17,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:17,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:17,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:22:17,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:17,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:22:17,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:17,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:17,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:17,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:17,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:17,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:22:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:17,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:17,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:17,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:22:17,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:17,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:22:17,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:17,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:17,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:17,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:22:17,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:17,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:22:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:17,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:17,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:17,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 23:22:17,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:17,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-26 23:22:17,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:17,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:22:17,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:17,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 23:22:17,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:17,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 825 [2020-10-26 23:22:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:17,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:17,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:18,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:18,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:22:18,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:18,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-10-26 23:22:18,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:18,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:18,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:18,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:22:18,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:19,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2877 backedges. 1391 proven. 120 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:22:19,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714928023] [2020-10-26 23:22:19,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:19,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:22:19,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917191080] [2020-10-26 23:22:19,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:22:19,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:19,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:22:19,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:22:19,841 INFO L87 Difference]: Start difference. First operand 5989 states and 6664 transitions. Second operand 10 states. [2020-10-26 23:22:22,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:22,962 INFO L93 Difference]: Finished difference Result 12043 states and 13436 transitions. [2020-10-26 23:22:22,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:22:22,963 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 998 [2020-10-26 23:22:22,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:22,981 INFO L225 Difference]: With dead ends: 12043 [2020-10-26 23:22:22,981 INFO L226 Difference]: Without dead ends: 6393 [2020-10-26 23:22:22,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2020-10-26 23:22:22,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6393 states. [2020-10-26 23:22:23,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6393 to 5989. [2020-10-26 23:22:23,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5989 states. [2020-10-26 23:22:23,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5989 states to 5989 states and 6659 transitions. [2020-10-26 23:22:23,139 INFO L78 Accepts]: Start accepts. Automaton has 5989 states and 6659 transitions. Word has length 998 [2020-10-26 23:22:23,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:23,141 INFO L481 AbstractCegarLoop]: Abstraction has 5989 states and 6659 transitions. [2020-10-26 23:22:23,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:22:23,141 INFO L276 IsEmpty]: Start isEmpty. Operand 5989 states and 6659 transitions. [2020-10-26 23:22:23,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2020-10-26 23:22:23,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:23,167 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:23,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:22:23,168 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:23,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:23,169 INFO L82 PathProgramCache]: Analyzing trace with hash 750129396, now seen corresponding path program 1 times [2020-10-26 23:22:23,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:23,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339657412] [2020-10-26 23:22:23,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:23,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:23,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:26,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:28,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:28,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1025 [2020-10-26 23:22:28,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:22:28,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-26 23:22:28,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:28,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:22:28,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:22:28,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-26 23:22:28,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:28,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:28,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:28,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:28,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:28,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:28,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:22:28,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:28,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:28,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:28,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:28,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:22:28,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:28,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:28,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:28,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:22:28,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:28,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:22:28,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:28,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:28,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:22:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:28,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:28,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:28,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:22:28,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:28,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:22:28,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:28,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:28,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:28,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:28,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:22:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:28,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:28,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:28,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:22:28,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:28,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:22:28,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:28,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:28,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:28,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:28,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:28,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:22:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:28,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:28,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:28,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:22:28,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:28,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:22:28,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:28,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:28,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:28,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:28,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:28,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:22:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:28,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:29,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:29,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:22:29,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:29,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:22:29,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:29,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:29,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:29,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:29,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:29,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:22:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:29,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:29,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:29,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:22:29,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:29,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:22:29,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:22:29,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:29,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:22:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:29,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:29,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:29,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:22:29,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:29,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 23:22:29,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:29,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:22:29,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:29,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:22:29,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:29,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 826 [2020-10-26 23:22:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:29,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:29,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:29,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:29,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:22:29,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:29,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-26 23:22:29,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:29,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:29,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:22:29,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:31,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2879 backedges. 1366 proven. 147 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:22:31,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339657412] [2020-10-26 23:22:31,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:31,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:22:31,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408625332] [2020-10-26 23:22:31,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:22:31,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:31,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:22:31,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:22:31,044 INFO L87 Difference]: Start difference. First operand 5989 states and 6659 transitions. Second operand 10 states. [2020-10-26 23:22:34,179 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-26 23:22:34,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:34,791 INFO L93 Difference]: Finished difference Result 12051 states and 13479 transitions. [2020-10-26 23:22:34,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 23:22:34,791 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 999 [2020-10-26 23:22:34,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:34,809 INFO L225 Difference]: With dead ends: 12051 [2020-10-26 23:22:34,809 INFO L226 Difference]: Without dead ends: 6395 [2020-10-26 23:22:34,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=169, Invalid=533, Unknown=0, NotChecked=0, Total=702 [2020-10-26 23:22:34,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6395 states. [2020-10-26 23:22:34,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6395 to 6357. [2020-10-26 23:22:34,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6357 states. [2020-10-26 23:22:34,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6357 states to 6357 states and 7042 transitions. [2020-10-26 23:22:34,960 INFO L78 Accepts]: Start accepts. Automaton has 6357 states and 7042 transitions. Word has length 999 [2020-10-26 23:22:34,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:34,961 INFO L481 AbstractCegarLoop]: Abstraction has 6357 states and 7042 transitions. [2020-10-26 23:22:34,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:22:34,961 INFO L276 IsEmpty]: Start isEmpty. Operand 6357 states and 7042 transitions. [2020-10-26 23:22:34,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2020-10-26 23:22:34,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:34,981 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:34,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:22:34,981 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:34,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:34,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1782446456, now seen corresponding path program 1 times [2020-10-26 23:22:34,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:34,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974300823] [2020-10-26 23:22:34,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:35,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:36,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:38,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:38,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1056 [2020-10-26 23:22:38,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:38,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3760 [2020-10-26 23:22:38,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 23:22:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:22:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 306 [2020-10-26 23:22:38,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:39,273 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2020-10-26 23:22:39,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:39,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:39,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:39,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:39,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:39,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:22:39,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:39,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:39,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:39,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:39,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:39,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:39,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:39,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:39,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:22:39,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:39,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:22:39,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:39,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:39,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:39,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:39,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:39,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:22:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:39,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:39,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:39,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:22:39,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:39,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:22:39,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:39,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:39,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:39,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:39,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:39,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:22:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:39,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:39,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:39,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:22:39,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:39,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:22:39,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:39,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:39,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:39,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:39,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:39,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:22:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:39,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:39,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:39,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:22:39,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:39,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:22:39,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:39,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:39,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:22:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:39,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:39,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:39,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:22:39,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:39,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:22:39,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:39,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:39,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:39,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:39,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:39,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:22:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:39,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:39,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:39,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:22:39,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:39,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:22:39,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:39,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:39,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:39,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:22:39,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:39,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:22:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:39,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:40,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:40,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:22:40,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:40,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-26 23:22:40,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:40,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:22:40,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:40,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:22:40,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:22:40,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:22:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:40,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:40,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:40,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:40,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:22:40,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:40,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-10-26 23:22:40,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:40,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:40,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:40,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:22:40,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2925 backedges. 1391 proven. 168 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:22:42,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974300823] [2020-10-26 23:22:42,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:42,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:22:42,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420830129] [2020-10-26 23:22:42,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:22:42,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:42,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:22:42,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:22:42,735 INFO L87 Difference]: Start difference. First operand 6357 states and 7042 transitions. Second operand 11 states. [2020-10-26 23:22:42,920 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-10-26 23:22:47,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:47,488 INFO L93 Difference]: Finished difference Result 12922 states and 14509 transitions. [2020-10-26 23:22:47,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:22:47,489 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1030 [2020-10-26 23:22:47,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:47,500 INFO L225 Difference]: With dead ends: 12922 [2020-10-26 23:22:47,501 INFO L226 Difference]: Without dead ends: 6937 [2020-10-26 23:22:47,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2020-10-26 23:22:47,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6937 states. [2020-10-26 23:22:47,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6937 to 6541. [2020-10-26 23:22:47,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6541 states. [2020-10-26 23:22:47,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6541 states to 6541 states and 7227 transitions. [2020-10-26 23:22:47,647 INFO L78 Accepts]: Start accepts. Automaton has 6541 states and 7227 transitions. Word has length 1030 [2020-10-26 23:22:47,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:47,648 INFO L481 AbstractCegarLoop]: Abstraction has 6541 states and 7227 transitions. [2020-10-26 23:22:47,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:22:47,648 INFO L276 IsEmpty]: Start isEmpty. Operand 6541 states and 7227 transitions. [2020-10-26 23:22:47,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1085 [2020-10-26 23:22:47,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:47,667 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:47,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:22:47,668 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:47,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:47,669 INFO L82 PathProgramCache]: Analyzing trace with hash -259619044, now seen corresponding path program 1 times [2020-10-26 23:22:47,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:47,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16718694] [2020-10-26 23:22:47,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:47,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:48,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:51,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:52,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:52,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1110 [2020-10-26 23:22:52,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:22:52,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-26 23:22:52,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:52,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:22:52,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:22:52,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:22:52,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:53,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:53,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:53,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:53,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:53,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:53,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:22:53,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:53,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:53,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:53,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:53,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:53,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:53,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:53,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:53,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:22:53,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:53,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:22:53,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:53,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:53,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:22:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:53,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:53,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:53,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:22:53,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:53,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:22:53,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:53,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:53,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:53,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:53,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:53,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:22:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:53,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:53,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:53,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:22:53,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:53,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:22:53,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:53,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:53,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:53,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:53,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:53,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:22:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:53,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:53,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:53,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:22:53,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:53,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:22:53,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:53,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:53,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:53,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:53,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:53,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:22:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:53,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:53,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:53,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:22:53,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:53,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:22:53,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:53,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:53,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:53,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:53,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:53,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:22:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:53,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:53,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:53,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:22:53,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:53,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 23:22:53,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:53,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:53,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:53,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:22:53,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:53,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:22:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:53,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:53,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:53,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:22:53,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:53,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:22:53,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:53,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:22:53,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:53,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:22:53,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:53,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 911 [2020-10-26 23:22:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:53,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:53,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:53,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:53,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:22:53,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:53,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-26 23:22:53,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:53,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:53,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:53,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:22:53,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3213 backedges. 1327 proven. 72 refuted. 0 times theorem prover too weak. 1814 trivial. 0 not checked. [2020-10-26 23:22:55,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16718694] [2020-10-26 23:22:55,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:55,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:22:55,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243040128] [2020-10-26 23:22:55,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:22:55,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:55,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:22:55,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:22:55,268 INFO L87 Difference]: Start difference. First operand 6541 states and 7227 transitions. Second operand 10 states. [2020-10-26 23:22:58,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:58,651 INFO L93 Difference]: Finished difference Result 14094 states and 15774 transitions. [2020-10-26 23:22:58,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 23:22:58,652 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1084 [2020-10-26 23:22:58,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:58,666 INFO L225 Difference]: With dead ends: 14094 [2020-10-26 23:22:58,667 INFO L226 Difference]: Without dead ends: 7851 [2020-10-26 23:22:58,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2020-10-26 23:22:58,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7851 states. [2020-10-26 23:22:58,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7851 to 7831. [2020-10-26 23:22:58,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7831 states. [2020-10-26 23:22:58,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7831 states to 7831 states and 8764 transitions. [2020-10-26 23:22:58,844 INFO L78 Accepts]: Start accepts. Automaton has 7831 states and 8764 transitions. Word has length 1084 [2020-10-26 23:22:58,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:58,845 INFO L481 AbstractCegarLoop]: Abstraction has 7831 states and 8764 transitions. [2020-10-26 23:22:58,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:22:58,845 INFO L276 IsEmpty]: Start isEmpty. Operand 7831 states and 8764 transitions. [2020-10-26 23:22:58,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1191 [2020-10-26 23:22:58,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:58,866 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:58,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 23:22:58,867 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:58,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:58,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1967972976, now seen corresponding path program 1 times [2020-10-26 23:22:58,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:58,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043695330] [2020-10-26 23:22:58,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:59,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:59,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking...