/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/Problem06_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:35:23,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:35:23,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:35:23,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:35:23,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:35:23,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:35:23,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:35:23,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:35:23,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:35:23,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:35:23,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:35:23,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:35:23,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:35:23,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:35:23,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:35:23,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:35:23,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:35:23,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:35:23,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:35:23,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:35:23,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:35:23,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:35:23,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:35:23,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:35:23,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:35:23,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:35:23,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:35:23,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:35:23,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:35:23,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:35:23,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:35:23,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:35:23,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:35:23,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:35:23,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:35:23,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:35:23,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:35:23,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:35:23,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:35:23,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:35:23,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:35:23,944 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 21:35:24,000 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:35:24,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:35:24,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:35:24,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:35:24,006 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:35:24,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:35:24,007 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:35:24,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:35:24,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:35:24,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:35:24,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:35:24,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:35:24,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:35:24,009 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:35:24,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:35:24,009 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:35:24,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:35:24,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:35:24,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:35:24,010 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:35:24,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:35:24,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:35:24,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:35:24,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:35:24,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:35:24,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:35:24,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:35:24,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:35:24,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:35:24,012 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:35:24,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:35:24,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:35:24,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:35:24,474 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:35:24,474 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:35:24,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label33.c [2020-10-26 21:35:24,557 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49d9346ea/e049c797883c400792edeced4af1857c/FLAGc8a41e54a [2020-10-26 21:35:25,685 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:35:25,685 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label33.c [2020-10-26 21:35:25,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49d9346ea/e049c797883c400792edeced4af1857c/FLAGc8a41e54a [2020-10-26 21:35:25,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49d9346ea/e049c797883c400792edeced4af1857c [2020-10-26 21:35:25,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:35:25,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:35:25,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:35:25,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:35:26,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:35:26,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:35:25" (1/1) ... [2020-10-26 21:35:26,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c8d31ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:35:26, skipping insertion in model container [2020-10-26 21:35:26,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:35:25" (1/1) ... [2020-10-26 21:35:26,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:35:26,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:35:28,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:35:28,261 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:35:29,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:35:29,526 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:35:29,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:35:29 WrapperNode [2020-10-26 21:35:29,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:35:29,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:35:29,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:35:29,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:35:29,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:35:29" (1/1) ... [2020-10-26 21:35:29,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:35:29" (1/1) ... [2020-10-26 21:35:29,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:35:29" (1/1) ... [2020-10-26 21:35:29,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:35:29" (1/1) ... [2020-10-26 21:35:29,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:35:29" (1/1) ... [2020-10-26 21:35:29,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:35:29" (1/1) ... [2020-10-26 21:35:30,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:35:29" (1/1) ... [2020-10-26 21:35:30,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:35:30,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:35:30,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:35:30,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:35:30,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:35:29" (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 21:35:30,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:35:30,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:35:30,271 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:35:30,271 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:35:30,271 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:35:30,271 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:35:30,272 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:35:30,272 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-26 21:35:30,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:35:30,272 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:35:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:35:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:35:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:35:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-26 21:35:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:35:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:35:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:35:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:35:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:35:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:35:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:35:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:35:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:35:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:35:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:35:30,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:35:30,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:35:38,379 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:35:38,379 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:35:38,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:35:38 BoogieIcfgContainer [2020-10-26 21:35:38,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:35:38,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:35:38,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:35:38,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:35:38,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:35:25" (1/3) ... [2020-10-26 21:35:38,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25cab83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:35:38, skipping insertion in model container [2020-10-26 21:35:38,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:35:29" (2/3) ... [2020-10-26 21:35:38,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25cab83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:35:38, skipping insertion in model container [2020-10-26 21:35:38,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:35:38" (3/3) ... [2020-10-26 21:35:38,394 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label33.c [2020-10-26 21:35:38,407 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:35:38,413 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:35:38,428 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:35:38,464 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:35:38,465 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:35:38,465 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:35:38,465 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:35:38,465 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:35:38,465 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:35:38,465 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:35:38,466 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:35:38,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-26 21:35:38,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2020-10-26 21:35:38,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:35:38,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:35:38,597 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:35:38,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:35:38,613 INFO L82 PathProgramCache]: Analyzing trace with hash -773050636, now seen corresponding path program 1 times [2020-10-26 21:35:38,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:35:38,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193858564] [2020-10-26 21:35:38,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:35:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:35:40,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:35:43,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:35:44,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:35:44,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 981 [2020-10-26 21:35:44,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:35:44,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-26 21:35:44,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:35:44,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-26 21:35:44,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:35:44,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-26 21:35:44,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 21:35:48,364 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-26 21:35:48,643 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-26 21:35:48,979 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-26 21:35:49,304 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2020-10-26 21:35:49,575 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-26 21:35:49,856 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-26 21:35:50,131 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-26 21:35:50,357 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-26 21:35:50,604 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-26 21:35:50,848 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-26 21:35:51,627 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 21:35:51,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:35:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:35:51,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:35:51,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:35:51,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:35:51,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:35:51,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 21:35:51,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:35:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:35:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:35:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:35:51,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:36:04,238 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 21:36:04,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193858564] [2020-10-26 21:36:04,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:36:04,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-26 21:36:04,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453191642] [2020-10-26 21:36:04,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 21:36:04,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:36:04,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 21:36:04,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-26 21:36:04,265 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 18 states. [2020-10-26 21:36:04,820 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-26 21:36:05,831 WARN L193 SmtUtils]: Spent 914.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 196 [2020-10-26 21:36:06,858 WARN L193 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 196 [2020-10-26 21:36:07,956 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 214 DAG size of output: 204 [2020-10-26 21:36:12,431 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 235 DAG size of output: 203 [2020-10-26 21:36:16,542 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 238 DAG size of output: 202 [2020-10-26 21:36:19,701 WARN L193 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 193 [2020-10-26 21:36:20,871 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 223 DAG size of output: 199 [2020-10-26 21:36:22,359 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 221 DAG size of output: 198 [2020-10-26 21:36:33,272 WARN L193 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 191 [2020-10-26 21:36:34,350 WARN L193 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 196 [2020-10-26 21:36:37,768 WARN L193 SmtUtils]: Spent 956.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 195 [2020-10-26 21:36:45,915 WARN L193 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 189 [2020-10-26 21:36:46,964 WARN L193 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 193 [2020-10-26 21:36:49,843 WARN L193 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 191 [2020-10-26 21:37:03,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:37:03,736 INFO L93 Difference]: Finished difference Result 3401 states and 6365 transitions. [2020-10-26 21:37:03,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 21:37:03,739 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 963 [2020-10-26 21:37:03,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:37:03,794 INFO L225 Difference]: With dead ends: 3401 [2020-10-26 21:37:03,794 INFO L226 Difference]: Without dead ends: 2020 [2020-10-26 21:37:03,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 21:37:03,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2020-10-26 21:37:03,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2020. [2020-10-26 21:37:03,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2020 states. [2020-10-26 21:37:04,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3054 transitions. [2020-10-26 21:37:04,009 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3054 transitions. Word has length 963 [2020-10-26 21:37:04,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:37:04,012 INFO L481 AbstractCegarLoop]: Abstraction has 2020 states and 3054 transitions. [2020-10-26 21:37:04,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-26 21:37:04,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3054 transitions. [2020-10-26 21:37:04,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1034 [2020-10-26 21:37:04,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:37:04,056 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:37:04,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:37:04,056 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:37:04,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:37:04,058 INFO L82 PathProgramCache]: Analyzing trace with hash -901539189, now seen corresponding path program 1 times [2020-10-26 21:37:04,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:37:04,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987265438] [2020-10-26 21:37:04,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:37:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:37:04,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:37:06,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:37:09,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:37:09,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1053 [2020-10-26 21:37:09,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:37:09,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5235 [2020-10-26 21:37:09,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:37:09,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:37:09,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:37:09,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 21:37:09,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:37:10,039 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 21:37:10,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:37:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:37:10,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:37:10,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:37:10,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:37:10,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:37:10,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 21:37:10,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:37:10,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:37:10,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:37:10,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:37:10,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:37:10,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:37:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:37:10,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:37:10,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:37:10,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 21:37:10,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:37:10,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-26 21:37:10,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:37:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:37:10,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:37:10,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 21:37:10,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:37:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:37:11,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987265438] [2020-10-26 21:37:11,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:37:11,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:37:11,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753992492] [2020-10-26 21:37:11,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:37:11,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:37:11,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:37:11,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:37:11,476 INFO L87 Difference]: Start difference. First operand 2020 states and 3054 transitions. Second operand 7 states. [2020-10-26 21:37:11,801 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-26 21:37:13,179 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-26 21:37:35,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:37:35,104 INFO L93 Difference]: Finished difference Result 4442 states and 7471 transitions. [2020-10-26 21:37:35,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:37:35,105 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1033 [2020-10-26 21:37:35,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:37:35,125 INFO L225 Difference]: With dead ends: 4442 [2020-10-26 21:37:35,125 INFO L226 Difference]: Without dead ends: 3182 [2020-10-26 21:37:35,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:37:35,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3182 states. [2020-10-26 21:37:35,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3182 to 3109. [2020-10-26 21:37:35,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-26 21:37:35,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4392 transitions. [2020-10-26 21:37:35,243 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4392 transitions. Word has length 1033 [2020-10-26 21:37:35,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:37:35,243 INFO L481 AbstractCegarLoop]: Abstraction has 3109 states and 4392 transitions. [2020-10-26 21:37:35,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:37:35,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4392 transitions. [2020-10-26 21:37:35,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1086 [2020-10-26 21:37:35,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:37:35,272 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:37:35,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:37:35,273 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:37:35,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:37:35,274 INFO L82 PathProgramCache]: Analyzing trace with hash 557049768, now seen corresponding path program 1 times [2020-10-26 21:37:35,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:37:35,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861123509] [2020-10-26 21:37:35,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:37:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:37:35,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:37:37,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:37:40,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:37:40,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1105 [2020-10-26 21:37:40,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:37:40,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-26 21:37:40,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:37:40,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-26 21:37:40,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:37:40,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1096 [2020-10-26 21:37:40,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:37:41,704 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 21:37:41,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:37:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:37:41,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:37:41,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:37:41,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:37:41,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:37:41,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 21:37:41,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:37:41,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:37:41,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:37:41,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:37:41,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:37:41,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:37:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:37:42,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:37:42,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:37:42,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:37:42,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-26 21:37:42,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:37:42,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-26 21:37:42,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:37:42,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:37:42,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:37:42,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-26 21:37:42,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:37:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 115 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 21:37:44,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861123509] [2020-10-26 21:37:44,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:37:44,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 21:37:44,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328562794] [2020-10-26 21:37:44,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:37:44,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:37:44,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:37:44,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:37:44,071 INFO L87 Difference]: Start difference. First operand 3109 states and 4392 transitions. Second operand 7 states. [2020-10-26 21:37:44,375 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 21:37:45,241 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 21:38:10,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:38:10,668 INFO L93 Difference]: Finished difference Result 9862 states and 15009 transitions. [2020-10-26 21:38:10,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:38:10,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1085 [2020-10-26 21:38:10,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:38:10,716 INFO L225 Difference]: With dead ends: 9862 [2020-10-26 21:38:10,716 INFO L226 Difference]: Without dead ends: 7513 [2020-10-26 21:38:10,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-10-26 21:38:10,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7513 states. [2020-10-26 21:38:10,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7513 to 7417. [2020-10-26 21:38:10,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7417 states. [2020-10-26 21:38:10,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7417 states to 7417 states and 10494 transitions. [2020-10-26 21:38:10,963 INFO L78 Accepts]: Start accepts. Automaton has 7417 states and 10494 transitions. Word has length 1085 [2020-10-26 21:38:10,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:38:10,965 INFO L481 AbstractCegarLoop]: Abstraction has 7417 states and 10494 transitions. [2020-10-26 21:38:10,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:38:10,965 INFO L276 IsEmpty]: Start isEmpty. Operand 7417 states and 10494 transitions. [2020-10-26 21:38:11,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1106 [2020-10-26 21:38:11,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:38:11,002 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:38:11,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:38:11,002 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:38:11,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:38:11,003 INFO L82 PathProgramCache]: Analyzing trace with hash -974152658, now seen corresponding path program 1 times [2020-10-26 21:38:11,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:38:11,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696557766] [2020-10-26 21:38:11,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:38:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:38:11,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:38:11,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:38:12,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:38:16,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:38:16,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1129 [2020-10-26 21:38:16,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:38:16,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5210 [2020-10-26 21:38:16,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:38:16,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:38:16,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:38:16,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-26 21:38:16,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 21:38:16,946 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 21:38:16,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:38:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:38:16,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:38:16,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:38:16,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:38:16,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:38:16,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 21:38:16,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:38:16,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:38:16,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:38:16,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:38:16,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:38:17,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:38:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:38:17,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:38:17,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:38:17,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:38:17,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-26 21:38:17,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:38:17,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-26 21:38:17,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:38:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:38:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:38:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-26 21:38:17,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:38:17,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-26 21:38:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:38:17,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:38:17,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:38:17,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-26 21:38:17,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:38:17,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 21:38:17,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:38:17,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:38:17,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:38:17,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-26 21:38:17,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:38:17,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-26 21:38:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:38:17,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:38:17,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:38:17,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 21:38:17,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:38:17,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 21:38:17,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:38:17,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:38:17,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 21:38:17,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:38:17,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:38:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 143 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 21:38:19,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696557766] [2020-10-26 21:38:19,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:38:19,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:38:19,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299320375] [2020-10-26 21:38:19,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:38:19,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:38:19,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:38:19,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:38:19,126 INFO L87 Difference]: Start difference. First operand 7417 states and 10494 transitions. Second operand 8 states. [2020-10-26 21:38:19,407 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 21:38:21,101 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 21:38:42,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:38:42,999 INFO L93 Difference]: Finished difference Result 21359 states and 31721 transitions. [2020-10-26 21:38:43,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 21:38:43,001 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1105 [2020-10-26 21:38:43,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:38:43,087 INFO L225 Difference]: With dead ends: 21359 [2020-10-26 21:38:43,088 INFO L226 Difference]: Without dead ends: 14702 [2020-10-26 21:38:43,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-26 21:38:43,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14702 states. [2020-10-26 21:38:43,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14702 to 14176. [2020-10-26 21:38:43,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14176 states. [2020-10-26 21:38:43,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14176 states to 14176 states and 19057 transitions. [2020-10-26 21:38:43,606 INFO L78 Accepts]: Start accepts. Automaton has 14176 states and 19057 transitions. Word has length 1105 [2020-10-26 21:38:43,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:38:43,607 INFO L481 AbstractCegarLoop]: Abstraction has 14176 states and 19057 transitions. [2020-10-26 21:38:43,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:38:43,607 INFO L276 IsEmpty]: Start isEmpty. Operand 14176 states and 19057 transitions. [2020-10-26 21:38:43,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1106 [2020-10-26 21:38:43,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:38:43,667 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:38:43,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:38:43,667 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:38:43,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:38:43,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1354167878, now seen corresponding path program 1 times [2020-10-26 21:38:43,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:38:43,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437033436] [2020-10-26 21:38:43,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:38:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:38:43,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:38:44,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:38:48,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:38:49,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:38:49,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1127 [2020-10-26 21:38:49,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:38:49,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5370 [2020-10-26 21:38:49,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:38:49,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:38:49,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:38:49,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-26 21:38:49,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:38:49,647 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 21:38:49,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:38:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:38:49,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:38:49,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:38:49,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:38:49,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:38:49,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 21:38:49,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:38:49,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:38:49,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:38:49,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:38:49,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:38:49,802 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:38:49,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:38:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:38:49,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:38:50,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:38:50,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-26 21:38:50,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:38:50,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-26 21:38:50,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:38:50,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:38:50,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:38:50,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-26 21:38:50,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:38:50,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-26 21:38:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:38:50,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:38:50,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:38:50,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-26 21:38:50,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:38:50,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 21:38:50,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:38:50,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:38:50,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:38:50,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-26 21:38:50,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:38:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 21:38:51,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437033436] [2020-10-26 21:38:51,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:38:51,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:38:51,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072224665] [2020-10-26 21:38:51,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:38:51,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:38:51,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:38:51,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:38:51,596 INFO L87 Difference]: Start difference. First operand 14176 states and 19057 transitions. Second operand 8 states. [2020-10-26 21:38:51,931 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-26 21:38:53,777 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 165