/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:37:03,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:37:03,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:37:03,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:37:03,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:37:03,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:37:03,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:37:03,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:37:03,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:37:03,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:37:03,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:37:03,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:37:03,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:37:03,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:37:03,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:37:03,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:37:03,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:37:03,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:37:03,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:37:03,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:37:03,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:37:03,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:37:03,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:37:03,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:37:03,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:37:03,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:37:03,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:37:03,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:37:03,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:37:03,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:37:03,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:37:03,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:37:03,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:37:03,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:37:03,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:37:03,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:37:03,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:37:03,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:37:03,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:37:03,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:37:03,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:37:03,259 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 [2020-10-29 05:37:03,312 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:37:03,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:37:03,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:37:03,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:37:03,319 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:37:03,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:37:03,319 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:37:03,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:37:03,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:37:03,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:37:03,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:37:03,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:37:03,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:37:03,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:37:03,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:37:03,322 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:37:03,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:37:03,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:37:03,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:37:03,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:37:03,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:37:03,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:37:03,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:37:03,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:37:03,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:37:03,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:37:03,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:37:03,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:37:03,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:37:03,325 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:37:03,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:37:03,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:37:03,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:37:03,804 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:37:03,805 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:37:03,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label10.c [2020-10-29 05:37:03,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/010ba9a29/cf71b766327b4835bd9d98b1015a0fac/FLAGb718efd5e [2020-10-29 05:37:05,180 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:37:05,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label10.c [2020-10-29 05:37:05,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/010ba9a29/cf71b766327b4835bd9d98b1015a0fac/FLAGb718efd5e [2020-10-29 05:37:05,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/010ba9a29/cf71b766327b4835bd9d98b1015a0fac [2020-10-29 05:37:05,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:37:05,462 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:37:05,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:37:05,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:37:05,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:37:05,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:37:05" (1/1) ... [2020-10-29 05:37:05,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@301ec25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:05, skipping insertion in model container [2020-10-29 05:37:05,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:37:05" (1/1) ... [2020-10-29 05:37:05,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:37:05,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:37:07,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:37:07,773 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:37:08,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:37:08,862 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:37:08,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:08 WrapperNode [2020-10-29 05:37:08,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:37:08,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:37:08,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:37:08,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:37:08,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:08" (1/1) ... [2020-10-29 05:37:08,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:08" (1/1) ... [2020-10-29 05:37:09,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:08" (1/1) ... [2020-10-29 05:37:09,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:08" (1/1) ... [2020-10-29 05:37:09,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:08" (1/1) ... [2020-10-29 05:37:09,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:08" (1/1) ... [2020-10-29 05:37:09,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:08" (1/1) ... [2020-10-29 05:37:09,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:37:09,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:37:09,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:37:09,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:37:09,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:08" (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 [2020-10-29 05:37:09,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:37:09,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:37:09,588 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:37:09,589 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:37:09,589 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:37:09,589 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:37:09,589 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:37:09,589 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:37:09,590 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:37:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:37:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:37:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:37:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:37:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:37:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:37:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:37:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:37:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:37:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:37:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:37:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:37:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:37:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:37:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:37:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:37:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:37:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:37:17,816 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:37:17,817 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:37:17,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:37:17 BoogieIcfgContainer [2020-10-29 05:37:17,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:37:17,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:37:17,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:37:17,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:37:17,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:37:05" (1/3) ... [2020-10-29 05:37:17,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73127b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:37:17, skipping insertion in model container [2020-10-29 05:37:17,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:08" (2/3) ... [2020-10-29 05:37:17,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73127b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:37:17, skipping insertion in model container [2020-10-29 05:37:17,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:37:17" (3/3) ... [2020-10-29 05:37:17,833 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label10.c [2020-10-29 05:37:17,847 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:37:17,854 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:37:17,868 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:37:17,908 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:37:17,909 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:37:17,909 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:37:17,909 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:37:17,909 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:37:17,909 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:37:17,910 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:37:17,910 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:37:17,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-29 05:37:18,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2020-10-29 05:37:18,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:37:18,042 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] [2020-10-29 05:37:18,043 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:37:18,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:37:18,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1368780224, now seen corresponding path program 1 times [2020-10-29 05:37:18,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:37:18,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148386433] [2020-10-29 05:37:18,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:37:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:37:19,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:23,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:24,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:37:24,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 976 [2020-10-29 05:37:24,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:37:24,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5206 [2020-10-29 05:37:24,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:37:24,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:37:24,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 05:37:24,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:37:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 967 [2020-10-29 05:37:24,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:37:25,830 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:37:25,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:37:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:37:25,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:25,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:37:25,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:37:25,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:37:25,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 05:37:25,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:37:25,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:37:25,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:37:25,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:37:25,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:37:25,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:37:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:37:27,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148386433] [2020-10-29 05:37:27,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:37:27,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 05:37:27,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478595514] [2020-10-29 05:37:27,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:37:27,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:37:27,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:37:27,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:37:27,419 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 5 states. [2020-10-29 05:37:27,723 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:37:28,118 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:37:51,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:37:51,399 INFO L93 Difference]: Finished difference Result 4838 states and 9120 transitions. [2020-10-29 05:37:51,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:37:51,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 958 [2020-10-29 05:37:51,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:37:51,459 INFO L225 Difference]: With dead ends: 4838 [2020-10-29 05:37:51,459 INFO L226 Difference]: Without dead ends: 3451 [2020-10-29 05:37:51,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:37:51,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3451 states. [2020-10-29 05:37:51,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3451 to 3411. [2020-10-29 05:37:51,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3411 states. [2020-10-29 05:37:51,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3411 states to 3411 states and 5720 transitions. [2020-10-29 05:37:51,754 INFO L78 Accepts]: Start accepts. Automaton has 3411 states and 5720 transitions. Word has length 958 [2020-10-29 05:37:51,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:37:51,757 INFO L481 AbstractCegarLoop]: Abstraction has 3411 states and 5720 transitions. [2020-10-29 05:37:51,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:37:51,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3411 states and 5720 transitions. [2020-10-29 05:37:51,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 979 [2020-10-29 05:37:51,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:37:51,804 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:37:51,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:37:51,805 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:37:51,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:37:51,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1421630330, now seen corresponding path program 1 times [2020-10-29 05:37:51,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:37:51,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941937359] [2020-10-29 05:37:51,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:37:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:37:51,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:52,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:53,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:56,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:37:56,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1000 [2020-10-29 05:37:56,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:37:56,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 05:37:56,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:37:56,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:37:56,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 05:37:56,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:37:56,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 05:37:56,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:37:57,500 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:37:57,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:37:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:37:57,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:57,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:37:57,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:37:57,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:37:57,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 05:37:57,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:37:57,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:37:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:37:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:37:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:37:57,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:37:57,673 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:37:57,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:37:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:37:57,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:57,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:37:57,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:37:57,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:37:57,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 05:37:57,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:37:57,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:37:57,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:37:57,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:37:57,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 05:37:57,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:37:57,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:37:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:37:57,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:57,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:37:57,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:37:57,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:37:57,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 05:37:57,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:37:57,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:37:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:37:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:37:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 05:37:57,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:37:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 05:37:58,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941937359] [2020-10-29 05:37:58,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:37:58,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:37:58,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316256616] [2020-10-29 05:37:58,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:37:58,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:37:58,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:37:58,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:37:58,546 INFO L87 Difference]: Start difference. First operand 3411 states and 5720 transitions. Second operand 8 states. [2020-10-29 05:37:58,801 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:38:22,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:38:22,070 INFO L93 Difference]: Finished difference Result 10340 states and 17431 transitions. [2020-10-29 05:38:22,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 05:38:22,071 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 978 [2020-10-29 05:38:22,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:38:22,110 INFO L225 Difference]: With dead ends: 10340 [2020-10-29 05:38:22,110 INFO L226 Difference]: Without dead ends: 6935 [2020-10-29 05:38:22,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:38:22,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6935 states. [2020-10-29 05:38:22,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6935 to 6900. [2020-10-29 05:38:22,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6900 states. [2020-10-29 05:38:22,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6900 states to 6900 states and 11588 transitions. [2020-10-29 05:38:22,357 INFO L78 Accepts]: Start accepts. Automaton has 6900 states and 11588 transitions. Word has length 978 [2020-10-29 05:38:22,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:38:22,357 INFO L481 AbstractCegarLoop]: Abstraction has 6900 states and 11588 transitions. [2020-10-29 05:38:22,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:38:22,358 INFO L276 IsEmpty]: Start isEmpty. Operand 6900 states and 11588 transitions. [2020-10-29 05:38:22,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 979 [2020-10-29 05:38:22,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:38:22,392 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:38:22,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:38:22,392 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:38:22,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:38:22,393 INFO L82 PathProgramCache]: Analyzing trace with hash -493153694, now seen corresponding path program 1 times [2020-10-29 05:38:22,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:38:22,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217678758] [2020-10-29 05:38:22,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:38:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:22,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:25,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:27,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:27,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 998 [2020-10-29 05:38:27,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:38:27,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5180 [2020-10-29 05:38:27,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:27,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:27,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:38:27,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 05:38:27,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 964 [2020-10-29 05:38:27,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:38:28,620 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:38:28,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:38:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:28,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:28,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:28,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:38:28,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:38:28,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:38:28,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:28,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:28,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:38:28,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:38:28,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:38:28,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:38:28,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:38:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:28,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:28,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:28,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:38:28,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:38:28,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 05:38:28,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:28,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:28,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:38:28,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:38:28,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 05:38:28,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:38:29,989 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:38:29,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217678758] [2020-10-29 05:38:29,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:38:29,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:38:29,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934601464] [2020-10-29 05:38:29,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:38:29,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:38:29,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:38:29,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:38:29,993 INFO L87 Difference]: Start difference. First operand 6900 states and 11588 transitions. Second operand 6 states. [2020-10-29 05:38:30,280 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:38:30,676 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:38:56,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:38:56,972 INFO L93 Difference]: Finished difference Result 26530 states and 46255 transitions. [2020-10-29 05:38:56,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:38:56,973 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 978 [2020-10-29 05:38:56,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:38:57,077 INFO L225 Difference]: With dead ends: 26530 [2020-10-29 05:38:57,077 INFO L226 Difference]: Without dead ends: 19636 [2020-10-29 05:38:57,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:38:57,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19636 states. [2020-10-29 05:38:57,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19636 to 19551. [2020-10-29 05:38:57,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19551 states. [2020-10-29 05:38:57,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19551 states to 19551 states and 31114 transitions. [2020-10-29 05:38:57,734 INFO L78 Accepts]: Start accepts. Automaton has 19551 states and 31114 transitions. Word has length 978 [2020-10-29 05:38:57,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:38:57,735 INFO L481 AbstractCegarLoop]: Abstraction has 19551 states and 31114 transitions. [2020-10-29 05:38:57,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:38:57,735 INFO L276 IsEmpty]: Start isEmpty. Operand 19551 states and 31114 transitions. [2020-10-29 05:38:57,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1019 [2020-10-29 05:38:57,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:38:57,806 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:38:57,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:38:57,807 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:38:57,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:38:57,808 INFO L82 PathProgramCache]: Analyzing trace with hash -863942796, now seen corresponding path program 1 times [2020-10-29 05:38:57,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:38:57,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834936994] [2020-10-29 05:38:57,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:38:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:57,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:58,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:03,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:03,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1040 [2020-10-29 05:39:03,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:39:03,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5140 [2020-10-29 05:39:03,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:03,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:03,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:39:03,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 05:39:03,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 05:39:03,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:39:03,564 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:39:03,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:39:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:03,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:03,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:03,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:39:03,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:03,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:39:03,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:03,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:39:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:39:03,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:39:03,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:39:03,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:39:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:03,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:03,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:03,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 05:39:03,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:03,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 05:39:03,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:03,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:39:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:39:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 05:39:03,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:03,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 05:39:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:03,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:03,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:03,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 05:39:03,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:03,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 05:39:03,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:03,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:03,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:39:03,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:39:03,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 05:39:03,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:39:04,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834936994] [2020-10-29 05:39:04,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:39:04,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:39:04,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356882681] [2020-10-29 05:39:04,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:39:04,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:39:04,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:39:04,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:39:04,903 INFO L87 Difference]: Start difference. First operand 19551 states and 31114 transitions. Second operand 7 states. [2020-10-29 05:39:05,171 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:39:06,508 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:39:25,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:39:25,921 INFO L93 Difference]: Finished difference Result 58841 states and 98562 transitions. [2020-10-29 05:39:25,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 05:39:25,922 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1018 [2020-10-29 05:39:25,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:39:26,095 INFO L225 Difference]: With dead ends: 58841 [2020-10-29 05:39:26,096 INFO L226 Difference]: Without dead ends: 39296 [2020-10-29 05:39:26,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:39:26,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39296 states. [2020-10-29 05:39:27,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39296 to 39112. [2020-10-29 05:39:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39112 states. [2020-10-29 05:39:27,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39112 states to 39112 states and 62078 transitions. [2020-10-29 05:39:27,642 INFO L78 Accepts]: Start accepts. Automaton has 39112 states and 62078 transitions. Word has length 1018 [2020-10-29 05:39:27,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:39:27,643 INFO L481 AbstractCegarLoop]: Abstraction has 39112 states and 62078 transitions. [2020-10-29 05:39:27,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:39:27,643 INFO L276 IsEmpty]: Start isEmpty. Operand 39112 states and 62078 transitions. [2020-10-29 05:39:27,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1025 [2020-10-29 05:39:27,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:39:27,789 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:39:27,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:39:27,789 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:39:27,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:39:27,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1697353334, now seen corresponding path program 1 times [2020-10-29 05:39:27,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:39:27,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725380825] [2020-10-29 05:39:27,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:39:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:27,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:28,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:31,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:32,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:32,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1048 [2020-10-29 05:39:32,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:39:32,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-29 05:39:32,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:32,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:32,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:39:32,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 05:39:32,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 05:39:32,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:33,400 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:39:33,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:39:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:33,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:33,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:33,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:39:33,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:33,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:39:33,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:33,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:33,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:39:33,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:39:33,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:39:33,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:33,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:39:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:33,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:33,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:33,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 05:39:33,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:33,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:39:33,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:33,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:33,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:39:33,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:39:33,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:39:33,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:33,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 05:39:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:33,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:33,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:33,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:39:33,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:33,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 05:39:33,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:33,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:33,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:39:33,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:39:33,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 05:39:33,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:33,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 05:39:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:33,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:33,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:33,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 05:39:33,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:33,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 05:39:33,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:33,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:39:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:39:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 05:39:33,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:34,441 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 05:39:34,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725380825] [2020-10-29 05:39:34,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:39:34,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:39:34,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456576587] [2020-10-29 05:39:34,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:39:34,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:39:34,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:39:34,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:39:34,445 INFO L87 Difference]: Start difference. First operand 39112 states and 62078 transitions. Second operand 7 states. [2020-10-29 05:39:34,750 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:39:36,564 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:39:58,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:39:58,489 INFO L93 Difference]: Finished difference Result 118135 states and 202913 transitions. [2020-10-29 05:39:58,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 05:39:58,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1024 [2020-10-29 05:39:58,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:39:58,837 INFO L225 Difference]: With dead ends: 118135 [2020-10-29 05:39:58,838 INFO L226 Difference]: Without dead ends: 79029 [2020-10-29 05:39:58,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:39:59,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79029 states. [2020-10-29 05:40:01,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79029 to 78831. [2020-10-29 05:40:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78831 states. [2020-10-29 05:40:01,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78831 states to 78831 states and 129069 transitions. [2020-10-29 05:40:01,644 INFO L78 Accepts]: Start accepts. Automaton has 78831 states and 129069 transitions. Word has length 1024 [2020-10-29 05:40:01,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:40:01,644 INFO L481 AbstractCegarLoop]: Abstraction has 78831 states and 129069 transitions. [2020-10-29 05:40:01,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:40:01,645 INFO L276 IsEmpty]: Start isEmpty. Operand 78831 states and 129069 transitions. [2020-10-29 05:40:03,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1041 [2020-10-29 05:40:03,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:40:03,036 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:40:03,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:40:03,037 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:40:03,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:40:03,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1609983131, now seen corresponding path program 1 times [2020-10-29 05:40:03,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:40:03,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641767434] [2020-10-29 05:40:03,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:40:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:40:03,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:03,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:03,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:08,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:08,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:40:08,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1066 [2020-10-29 05:40:08,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:40:08,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5745 [2020-10-29 05:40:08,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:40:08,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:40:08,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 05:40:08,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:40:08,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 05:40:08,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:40:09,564 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:40:09,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:40:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:40:09,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:09,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:40:09,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:40:09,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:40:09,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 05:40:09,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:40:09,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:40:09,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:40:09,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:40:09,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:40:09,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:40:09,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:40:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:40:09,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:09,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:40:09,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 05:40:09,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:40:09,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 05:40:09,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:40:09,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:40:09,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:40:09,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:40:09,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 05:40:09,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:40:09,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 05:40:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:40:09,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:09,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:40:09,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:40:09,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:40:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 05:40:09,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:40:09,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:40:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:40:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:40:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 05:40:09,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:40:09,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 05:40:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:40:09,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:09,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:40:09,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:40:09,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:40:09,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 05:40:09,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:40:09,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:40:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:40:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:40:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 05:40:09,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:40:10,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 05:40:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:40:10,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:10,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:40:10,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 05:40:10,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:40:10,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 05:40:10,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:40:10,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:40:10,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:40:10,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:40:10,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 05:40:10,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:40:11,307 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 71 proven. 60 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 05:40:11,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641767434] [2020-10-29 05:40:11,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:40:11,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 05:40:11,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383075506] [2020-10-29 05:40:11,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 05:40:11,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:40:11,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 05:40:11,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:40:11,311 INFO L87 Difference]: Start difference. First operand 78831 states and 129069 transitions. Second operand 12 states. [2020-10-29 05:40:11,595 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 05:40:12,108 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-29 05:40:12,933 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 164 [2020-10-29 05:40:13,759 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 05:40:14,304 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 168 [2020-10-29 05:40:15,163 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-29 05:40:15,754 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 05:40:16,633 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 165 [2020-10-29 05:40:24,442 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 05:40:28,627 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37