/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/Problem05_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:22:05,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:22:05,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:22:05,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:22:05,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:22:05,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:22:05,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:22:05,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:22:05,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:22:05,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:22:05,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:22:05,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:22:05,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:22:05,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:22:05,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:22:05,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:22:05,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:22:05,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:22:05,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:22:05,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:22:05,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:22:05,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:22:05,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:22:05,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:22:05,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:22:05,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:22:05,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:22:05,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:22:05,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:22:05,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:22:05,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:22:05,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:22:05,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:22:05,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:22:05,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:22:05,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:22:05,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:22:05,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:22:05,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:22:05,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:22:05,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:22:05,966 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 05:22:06,033 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:22:06,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:22:06,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:22:06,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:22:06,038 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:22:06,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:22:06,038 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:22:06,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:22:06,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:22:06,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:22:06,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:22:06,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:22:06,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:22:06,041 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:22:06,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:22:06,042 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:22:06,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:22:06,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:22:06,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:22:06,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:22:06,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:22:06,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:22:06,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:22:06,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:22:06,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:22:06,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:22:06,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:22:06,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:22:06,046 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:22:06,046 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:22:06,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:22:06,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:22:06,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:22:06,536 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:22:06,537 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:22:06,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label16.c [2020-10-29 05:22:06,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/721d3f396/51d3d656f45c446095b935d98c687d4f/FLAGa386070de [2020-10-29 05:22:07,937 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:22:07,938 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label16.c [2020-10-29 05:22:08,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/721d3f396/51d3d656f45c446095b935d98c687d4f/FLAGa386070de [2020-10-29 05:22:08,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/721d3f396/51d3d656f45c446095b935d98c687d4f [2020-10-29 05:22:08,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:22:08,106 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:22:08,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:22:08,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:22:08,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:22:08,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:22:08" (1/1) ... [2020-10-29 05:22:08,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377e98df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:08, skipping insertion in model container [2020-10-29 05:22:08,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:22:08" (1/1) ... [2020-10-29 05:22:08,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:22:08,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:22:10,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:22:10,810 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:22:12,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:22:12,169 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:22:12,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:12 WrapperNode [2020-10-29 05:22:12,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:22:12,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:22:12,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:22:12,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:22:12,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:12" (1/1) ... [2020-10-29 05:22:12,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:12" (1/1) ... [2020-10-29 05:22:12,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:12" (1/1) ... [2020-10-29 05:22:12,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:12" (1/1) ... [2020-10-29 05:22:12,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:12" (1/1) ... [2020-10-29 05:22:12,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:12" (1/1) ... [2020-10-29 05:22:12,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:12" (1/1) ... [2020-10-29 05:22:12,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:22:12,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:22:12,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:22:12,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:22:12,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:12" (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 05:22:13,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:22:13,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:22:13,081 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:22:13,081 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:22:13,081 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:22:13,082 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:22:13,082 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:22:13,082 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:22:13,082 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 05:22:13,082 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-29 05:22:13,084 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-29 05:22:13,085 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:22:13,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:22:13,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:22:13,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:22:13,086 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:22:13,086 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:22:13,086 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 05:22:13,086 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-29 05:22:13,087 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-29 05:22:13,087 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:22:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:22:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:22:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:22:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:22:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:22:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:22:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:22:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:22:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:22:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:22:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:22:13,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:22:23,466 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:22:23,467 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:22:23,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:22:23 BoogieIcfgContainer [2020-10-29 05:22:23,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:22:23,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:22:23,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:22:23,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:22:23,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:22:08" (1/3) ... [2020-10-29 05:22:23,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f3b14b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:22:23, skipping insertion in model container [2020-10-29 05:22:23,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:12" (2/3) ... [2020-10-29 05:22:23,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f3b14b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:22:23, skipping insertion in model container [2020-10-29 05:22:23,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:22:23" (3/3) ... [2020-10-29 05:22:23,484 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label16.c [2020-10-29 05:22:23,497 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:22:23,504 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:22:23,517 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:22:23,567 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:22:23,567 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:22:23,568 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:22:23,568 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:22:23,568 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:22:23,568 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:22:23,568 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:22:23,568 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:22:23,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-29 05:22:23,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1710 [2020-10-29 05:22:23,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:22:23,767 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:22:23,767 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:22:23,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:22:23,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1942431081, now seen corresponding path program 1 times [2020-10-29 05:22:23,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:22:23,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120316095] [2020-10-29 05:22:23,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:22:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:25,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:30,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:30,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1733 [2020-10-29 05:22:30,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:22:30,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-29 05:22:30,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:30,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:30,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:22:30,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:22:30,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1724 [2020-10-29 05:22:30,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:22:32,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:22:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:32,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:32,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:32,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:22:32,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:22:32,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 05:22:32,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:32,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:32,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:22:32,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:22:32,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:22:32,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:22:35,481 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 05:22:35,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120316095] [2020-10-29 05:22:35,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:22:35,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:22:35,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463684286] [2020-10-29 05:22:35,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:22:35,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:22:35,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:22:35,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:22:35,512 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-29 05:22:35,744 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-29 05:22:59,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:22:59,295 INFO L93 Difference]: Finished difference Result 6365 states and 11967 transitions. [2020-10-29 05:22:59,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:22:59,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1709 [2020-10-29 05:22:59,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:22:59,362 INFO L225 Difference]: With dead ends: 6365 [2020-10-29 05:22:59,362 INFO L226 Difference]: Without dead ends: 4075 [2020-10-29 05:22:59,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:22:59,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2020-10-29 05:22:59,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4005. [2020-10-29 05:22:59,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4005 states. [2020-10-29 05:22:59,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 6505 transitions. [2020-10-29 05:22:59,606 INFO L78 Accepts]: Start accepts. Automaton has 4005 states and 6505 transitions. Word has length 1709 [2020-10-29 05:22:59,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:22:59,611 INFO L481 AbstractCegarLoop]: Abstraction has 4005 states and 6505 transitions. [2020-10-29 05:22:59,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:22:59,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4005 states and 6505 transitions. [2020-10-29 05:22:59,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1721 [2020-10-29 05:22:59,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:22:59,943 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:22:59,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:22:59,944 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:22:59,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:22:59,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1984152433, now seen corresponding path program 1 times [2020-10-29 05:22:59,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:22:59,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242055767] [2020-10-29 05:22:59,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:23:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:23:00,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:23:01,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:23:05,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:23:05,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1746 [2020-10-29 05:23:05,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:23:05,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-29 05:23:05,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:23:05,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:23:05,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:23:05,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 05:23:05,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1721 [2020-10-29 05:23:05,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:23:07,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:23:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:23:07,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:23:07,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:23:07,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:23:07,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:23:07,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:23:07,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:23:07,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:23:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:23:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:23:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:23:07,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:23:07,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:23:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:23:07,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:23:07,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:23:07,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:23:07,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:23:07,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 05:23:07,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:23:07,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:23:07,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:23:07,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:23:07,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 05:23:07,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:23:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:23:10,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242055767] [2020-10-29 05:23:10,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:23:10,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:23:10,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698626339] [2020-10-29 05:23:10,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:23:10,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:23:10,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:23:10,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:23:10,055 INFO L87 Difference]: Start difference. First operand 4005 states and 6505 transitions. Second operand 5 states. [2020-10-29 05:23:38,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:23:38,581 INFO L93 Difference]: Finished difference Result 9921 states and 16681 transitions. [2020-10-29 05:23:38,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:23:38,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1720 [2020-10-29 05:23:38,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:23:38,621 INFO L225 Difference]: With dead ends: 9921 [2020-10-29 05:23:38,621 INFO L226 Difference]: Without dead ends: 5922 [2020-10-29 05:23:38,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:23:38,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5922 states. [2020-10-29 05:23:38,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5922 to 5820. [2020-10-29 05:23:38,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5820 states. [2020-10-29 05:23:38,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5820 states to 5820 states and 8989 transitions. [2020-10-29 05:23:38,840 INFO L78 Accepts]: Start accepts. Automaton has 5820 states and 8989 transitions. Word has length 1720 [2020-10-29 05:23:38,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:23:38,844 INFO L481 AbstractCegarLoop]: Abstraction has 5820 states and 8989 transitions. [2020-10-29 05:23:38,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:23:38,844 INFO L276 IsEmpty]: Start isEmpty. Operand 5820 states and 8989 transitions. [2020-10-29 05:23:38,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1722 [2020-10-29 05:23:38,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:23:38,885 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:23:38,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:23:38,885 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:23:38,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:23:38,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1935241363, now seen corresponding path program 1 times [2020-10-29 05:23:38,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:23:38,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017147713] [2020-10-29 05:23:38,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:23:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:23:39,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:23:39,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:23:44,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:23:44,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1747 [2020-10-29 05:23:44,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:23:44,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5140 [2020-10-29 05:23:44,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:23:44,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:23:44,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 05:23:44,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 05:23:44,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1273 [2020-10-29 05:23:44,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:23:48,221 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-10-29 05:23:48,560 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 54 [2020-10-29 05:23:49,104 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 55 [2020-10-29 05:23:49,632 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 55 [2020-10-29 05:23:49,989 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 42 [2020-10-29 05:23:51,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:23:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:23:51,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:23:51,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:23:51,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:23:51,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:23:51,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:23:51,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:23:51,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:23:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:23:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:23:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:23:51,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:23:51,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:23:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:23:51,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:23:51,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:23:51,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:23:51,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:23:51,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:23:51,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:23:51,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:23:51,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:23:51,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:23:51,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 05:23:51,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:24:11,116 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:24:11,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017147713] [2020-10-29 05:24:11,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:24:11,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 05:24:11,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722728810] [2020-10-29 05:24:11,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 05:24:11,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:24:11,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 05:24:11,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-29 05:24:11,142 INFO L87 Difference]: Start difference. First operand 5820 states and 8989 transitions. Second operand 23 states. [2020-10-29 05:24:11,696 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 05:24:11,996 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-29 05:24:16,844 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 128 [2020-10-29 05:24:20,895 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 124 [2020-10-29 05:24:24,173 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:24:24,391 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 05:24:25,766 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-29 05:24:30,203 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 05:24:36,257 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:24:36,474 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:24:47,485 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:24:47,713 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:24:58,907 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:24:59,117 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:25:10,321 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:25:10,558 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:25:15,514 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:25:30,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:25:30,874 INFO L93 Difference]: Finished difference Result 12972 states and 20608 transitions. [2020-10-29 05:25:30,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 05:25:30,876 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1721 [2020-10-29 05:25:30,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:25:30,917 INFO L225 Difference]: With dead ends: 12972 [2020-10-29 05:25:30,918 INFO L226 Difference]: Without dead ends: 7158 [2020-10-29 05:25:30,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=207, Invalid=1353, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 05:25:30,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7158 states. [2020-10-29 05:25:31,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7158 to 7113. [2020-10-29 05:25:31,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7113 states. [2020-10-29 05:25:31,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7113 states to 7113 states and 10308 transitions. [2020-10-29 05:25:31,136 INFO L78 Accepts]: Start accepts. Automaton has 7113 states and 10308 transitions. Word has length 1721 [2020-10-29 05:25:31,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:25:31,139 INFO L481 AbstractCegarLoop]: Abstraction has 7113 states and 10308 transitions. [2020-10-29 05:25:31,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 05:25:31,139 INFO L276 IsEmpty]: Start isEmpty. Operand 7113 states and 10308 transitions. [2020-10-29 05:25:31,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1736 [2020-10-29 05:25:31,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:25:31,188 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:31,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:25:31,188 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:25:31,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:25:31,190 INFO L82 PathProgramCache]: Analyzing trace with hash -872878258, now seen corresponding path program 1 times [2020-10-29 05:25:31,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:25:31,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638450834] [2020-10-29 05:25:31,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:25:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:25:31,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:25:31,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:25:36,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:25:36,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1761 [2020-10-29 05:25:36,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:25:36,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-29 05:25:36,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:25:36,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:25:36,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 05:25:36,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 05:25:36,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1279 [2020-10-29 05:25:36,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:25:40,417 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2020-10-29 05:25:40,561 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2020-10-29 05:25:40,705 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2020-10-29 05:25:40,851 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2020-10-29 05:25:41,006 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-10-29 05:25:41,145 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-10-29 05:25:41,286 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-10-29 05:25:41,430 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-10-29 05:25:41,583 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-10-29 05:25:41,745 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-10-29 05:25:41,905 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-10-29 05:25:42,249 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 37 [2020-10-29 05:25:42,492 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2020-10-29 05:25:42,762 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 43 [2020-10-29 05:25:43,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:25:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:25:43,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:25:43,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:25:43,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:25:43,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:25:43,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:25:43,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:25:43,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:25:43,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:25:43,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:25:43,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:25:43,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:25:43,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:25:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:25:43,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:25:43,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:25:43,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 05:25:43,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:25:43,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 05:25:43,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:25:43,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:25:43,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 05:25:43,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:25:43,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 05:25:43,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0