/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/Problem19_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:44:38,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:44:38,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:44:38,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:44:38,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:44:38,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:44:38,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:44:38,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:44:38,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:44:38,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:44:38,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:44:38,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:44:38,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:44:38,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:44:38,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:44:38,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:44:38,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:44:38,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:44:38,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:44:38,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:44:38,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:44:38,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:44:38,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:44:38,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:44:38,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:44:38,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:44:38,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:44:38,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:44:38,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:44:38,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:44:38,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:44:38,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:44:38,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:44:38,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:44:38,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:44:38,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:44:38,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:44:38,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:44:38,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:44:38,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:44:38,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:44:38,910 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 08:44:38,958 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:44:38,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:44:38,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:44:38,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:44:38,963 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:44:38,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:44:38,964 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:44:38,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:44:38,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:44:38,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:44:38,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:44:38,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:44:38,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:44:38,966 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:44:38,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:44:38,966 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:44:38,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:44:38,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:44:38,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:44:38,967 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:44:38,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:44:38,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:44:38,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:44:38,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:44:38,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:44:38,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:44:38,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:44:38,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:44:38,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:44:38,969 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:44:39,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:44:39,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:44:39,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:44:39,466 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:44:39,466 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:44:39,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label11.c [2020-10-29 08:44:39,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/086cb6867/3d8fa6f890504bbf8e74ff02eb9b42c7/FLAGee9062072 [2020-10-29 08:44:40,988 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:44:40,989 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label11.c [2020-10-29 08:44:41,101 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/086cb6867/3d8fa6f890504bbf8e74ff02eb9b42c7/FLAGee9062072 [2020-10-29 08:44:41,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/086cb6867/3d8fa6f890504bbf8e74ff02eb9b42c7 [2020-10-29 08:44:41,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:44:41,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:44:41,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:44:41,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:44:41,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:44:41,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:44:41" (1/1) ... [2020-10-29 08:44:41,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fcb6a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:41, skipping insertion in model container [2020-10-29 08:44:41,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:44:41" (1/1) ... [2020-10-29 08:44:41,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:44:41,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:44:43,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:44:43,515 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:44:44,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:44:44,711 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:44:44,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:44 WrapperNode [2020-10-29 08:44:44,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:44:44,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:44:44,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:44:44,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:44:44,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:44" (1/1) ... [2020-10-29 08:44:44,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:44" (1/1) ... [2020-10-29 08:44:44,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:44" (1/1) ... [2020-10-29 08:44:44,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:44" (1/1) ... [2020-10-29 08:44:45,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:44" (1/1) ... [2020-10-29 08:44:45,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:44" (1/1) ... [2020-10-29 08:44:45,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:44" (1/1) ... [2020-10-29 08:44:45,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:44:45,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:44:45,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:44:45,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:44:45,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:44" (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 08:44:45,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:44:45,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:44:45,421 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:44:45,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:44:45,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:44:45,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:44:45,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 08:44:45,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 08:44:45,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 08:44:45,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:44:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:44:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:44:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:44:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 08:44:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 08:44:45,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 08:44:45,425 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:44:45,425 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:44:45,425 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:44:45,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:44:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:44:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:44:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:44:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:44:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:44:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:44:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:44:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:44:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:45:01,190 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:45:01,191 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:45:01,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:45:01 BoogieIcfgContainer [2020-10-29 08:45:01,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:45:01,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:45:01,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:45:01,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:45:01,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:44:41" (1/3) ... [2020-10-29 08:45:01,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f71e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:45:01, skipping insertion in model container [2020-10-29 08:45:01,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:44" (2/3) ... [2020-10-29 08:45:01,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f71e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:45:01, skipping insertion in model container [2020-10-29 08:45:01,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:45:01" (3/3) ... [2020-10-29 08:45:01,205 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label11.c [2020-10-29 08:45:01,218 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:45:01,224 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:45:01,238 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:45:01,275 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:45:01,275 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:45:01,276 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:45:01,276 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:45:01,276 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:45:01,276 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:45:01,276 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:45:01,276 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:45:01,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-29 08:45:01,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 08:45:01,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:45:01,331 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] [2020-10-29 08:45:01,331 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:45:01,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:45:01,338 INFO L82 PathProgramCache]: Analyzing trace with hash 764466422, now seen corresponding path program 1 times [2020-10-29 08:45:01,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:45:01,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468743122] [2020-10-29 08:45:01,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:45:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:45:01,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:02,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:45:02,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 08:45:02,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:45:02,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-10-29 08:45:02,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:45:02,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:45:02,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:45:02,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:45:02,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 08:45:02,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:45:02,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:45:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:45:02,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:02,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:45:02,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:45:02,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:45:02,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:45:02,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:45:02,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:45:02,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:45:02,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:45:02,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:45:02,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:45:02,200 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 08:45:02,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468743122] [2020-10-29 08:45:02,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:45:02,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:45:02,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361047765] [2020-10-29 08:45:02,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:45:02,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:45:02,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:45:02,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:45:02,233 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 5 states. [2020-10-29 08:45:39,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:45:39,803 INFO L93 Difference]: Finished difference Result 6577 states and 12493 transitions. [2020-10-29 08:45:39,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:45:39,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-29 08:45:39,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:45:39,858 INFO L225 Difference]: With dead ends: 6577 [2020-10-29 08:45:39,858 INFO L226 Difference]: Without dead ends: 4728 [2020-10-29 08:45:39,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:45:39,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4728 states. [2020-10-29 08:45:40,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4728 to 4630. [2020-10-29 08:45:40,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4630 states. [2020-10-29 08:45:40,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4630 states to 4630 states and 8139 transitions. [2020-10-29 08:45:40,168 INFO L78 Accepts]: Start accepts. Automaton has 4630 states and 8139 transitions. Word has length 23 [2020-10-29 08:45:40,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:45:40,170 INFO L481 AbstractCegarLoop]: Abstraction has 4630 states and 8139 transitions. [2020-10-29 08:45:40,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:45:40,171 INFO L276 IsEmpty]: Start isEmpty. Operand 4630 states and 8139 transitions. [2020-10-29 08:45:40,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 08:45:40,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:45:40,182 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 08:45:40,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:45:40,183 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:45:40,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:45:40,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1198250428, now seen corresponding path program 1 times [2020-10-29 08:45:40,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:45:40,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917275214] [2020-10-29 08:45:40,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:45:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:45:40,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:40,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:41,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:45:41,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 08:45:41,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:45:41,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1519 [2020-10-29 08:45:41,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:45:41,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:45:41,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:45:41,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:45:41,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 08:45:41,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:45:41,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:45:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:45:41,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:41,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:45:41,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:45:41,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:45:41,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 08:45:41,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:45:41,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:45:41,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:45:41,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:45:41,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:45:41,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:45:42,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:45:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:45:42,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:42,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:45:42,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 08:45:42,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:45:42,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-29 08:45:42,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:45:42,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:45:42,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:45:42,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:45:42,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 08:45:42,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:45:42,547 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:45:42,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917275214] [2020-10-29 08:45:42,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:45:42,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:45:42,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704493289] [2020-10-29 08:45:42,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:45:42,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:45:42,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:45:42,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:45:42,553 INFO L87 Difference]: Start difference. First operand 4630 states and 8139 transitions. Second operand 7 states. [2020-10-29 08:46:24,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:46:24,996 INFO L93 Difference]: Finished difference Result 10893 states and 18919 transitions. [2020-10-29 08:46:24,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:46:24,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-29 08:46:24,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:46:25,035 INFO L225 Difference]: With dead ends: 10893 [2020-10-29 08:46:25,035 INFO L226 Difference]: Without dead ends: 6269 [2020-10-29 08:46:25,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:46:25,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6269 states. [2020-10-29 08:46:25,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6269 to 6175. [2020-10-29 08:46:25,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6175 states. [2020-10-29 08:46:25,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6175 states to 6175 states and 10287 transitions. [2020-10-29 08:46:25,228 INFO L78 Accepts]: Start accepts. Automaton has 6175 states and 10287 transitions. Word has length 122 [2020-10-29 08:46:25,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:46:25,229 INFO L481 AbstractCegarLoop]: Abstraction has 6175 states and 10287 transitions. [2020-10-29 08:46:25,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:46:25,229 INFO L276 IsEmpty]: Start isEmpty. Operand 6175 states and 10287 transitions. [2020-10-29 08:46:25,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 08:46:25,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:46:25,233 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 08:46:25,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:46:25,233 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:46:25,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:46:25,234 INFO L82 PathProgramCache]: Analyzing trace with hash -2103651552, now seen corresponding path program 1 times [2020-10-29 08:46:25,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:46:25,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014246200] [2020-10-29 08:46:25,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:46:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:46:25,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:46:25,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:46:25,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 08:46:25,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:46:25,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-10-29 08:46:25,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:46:25,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:46:25,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:46:25,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:46:25,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 08:46:25,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:46:25,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:46:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:46:25,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:46:25,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:46:25,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:46:25,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:46:25,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 08:46:25,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:46:25,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:46:25,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:46:25,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:46:25,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:46:25,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:46:25,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:46:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:46:26,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:46:26,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:46:26,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 08:46:26,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:46:26,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-29 08:46:26,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:46:26,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:46:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:46:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:46:26,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 08:46:26,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:46:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:46:26,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014246200] [2020-10-29 08:46:26,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:46:26,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:46:26,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659709389] [2020-10-29 08:46:26,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:46:26,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:46:26,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:46:26,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:46:26,385 INFO L87 Difference]: Start difference. First operand 6175 states and 10287 transitions. Second operand 7 states. [2020-10-29 08:47:10,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:47:10,913 INFO L93 Difference]: Finished difference Result 18819 states and 32218 transitions. [2020-10-29 08:47:10,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:47:10,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-29 08:47:10,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:47:10,989 INFO L225 Difference]: With dead ends: 18819 [2020-10-29 08:47:10,990 INFO L226 Difference]: Without dead ends: 12650 [2020-10-29 08:47:11,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:47:11,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12650 states. [2020-10-29 08:47:11,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12650 to 12328. [2020-10-29 08:47:11,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12328 states. [2020-10-29 08:47:11,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12328 states to 12328 states and 18097 transitions. [2020-10-29 08:47:11,383 INFO L78 Accepts]: Start accepts. Automaton has 12328 states and 18097 transitions. Word has length 124 [2020-10-29 08:47:11,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:47:11,384 INFO L481 AbstractCegarLoop]: Abstraction has 12328 states and 18097 transitions. [2020-10-29 08:47:11,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:47:11,384 INFO L276 IsEmpty]: Start isEmpty. Operand 12328 states and 18097 transitions. [2020-10-29 08:47:11,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-29 08:47:11,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:47:11,388 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 08:47:11,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:47:11,388 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:47:11,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:47:11,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1945364656, now seen corresponding path program 1 times [2020-10-29 08:47:11,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:47:11,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608659742] [2020-10-29 08:47:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:47:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:47:11,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:47:11,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:47:11,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 08:47:11,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:47:11,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-29 08:47:11,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:47:11,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:47:11,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:47:11,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:47:11,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 08:47:11,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:47:12,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:47:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:47:12,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:47:12,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:47:12,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:47:12,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:47:12,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:47:12,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:47:12,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:47:12,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:47:12,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:47:12,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:47:12,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:47:12,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:47:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:47:12,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:47:12,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:47:12,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 08:47:12,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:47:12,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-29 08:47:12,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:47:12,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:47:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:47:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:47:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:47:12,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:47:12,418 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:47:12,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608659742] [2020-10-29 08:47:12,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:47:12,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:47:12,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750575927] [2020-10-29 08:47:12,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:47:12,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:47:12,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:47:12,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:47:12,432 INFO L87 Difference]: Start difference. First operand 12328 states and 18097 transitions. Second operand 7 states. [2020-10-29 08:48:16,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:48:16,810 INFO L93 Difference]: Finished difference Result 37441 states and 58031 transitions. [2020-10-29 08:48:16,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:48:16,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-29 08:48:16,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:48:16,926 INFO L225 Difference]: With dead ends: 37441 [2020-10-29 08:48:16,926 INFO L226 Difference]: Without dead ends: 25119 [2020-10-29 08:48:16,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:48:17,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25119 states. [2020-10-29 08:48:17,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25119 to 24529. [2020-10-29 08:48:17,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24529 states. [2020-10-29 08:48:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24529 states to 24529 states and 34649 transitions. [2020-10-29 08:48:17,788 INFO L78 Accepts]: Start accepts. Automaton has 24529 states and 34649 transitions. Word has length 132 [2020-10-29 08:48:17,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:48:17,790 INFO L481 AbstractCegarLoop]: Abstraction has 24529 states and 34649 transitions. [2020-10-29 08:48:17,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:48:17,791 INFO L276 IsEmpty]: Start isEmpty. Operand 24529 states and 34649 transitions. [2020-10-29 08:48:17,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-29 08:48:17,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:48:17,800 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:48:17,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:48:17,801 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:48:17,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:48:17,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1813463828, now seen corresponding path program 1 times [2020-10-29 08:48:17,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:48:17,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306108278] [2020-10-29 08:48:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:48:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:48:17,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:48:18,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:48:20,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:48:20,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-29 08:48:20,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:48:20,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2246 [2020-10-29 08:48:20,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:48:20,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:48:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:48:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-29 08:48:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 08:48:20,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:48:20,322 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:48:20,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:48:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:48:20,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:48:20,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:48:20,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:48:20,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:48:20,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:48:20,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:48:20,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:48:20,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:48:20,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:48:20,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:48:20,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:48:20,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:48:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:48:20,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:48:20,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:48:20,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 08:48:20,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:48:20,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 08:48:20,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:48:20,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:48:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:48:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:48:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 08:48:20,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:48:20,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 08:48:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:48:20,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:48:20,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:48:20,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 08:48:20,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:48:20,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-29 08:48:20,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:48:20,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:48:20,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:48:20,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:48:20,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 08:48:20,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:48:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:48:21,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306108278] [2020-10-29 08:48:21,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:48:21,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:48:21,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991308637] [2020-10-29 08:48:21,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:48:21,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:48:21,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:48:21,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:48:21,101 INFO L87 Difference]: Start difference. First operand 24529 states and 34649 transitions. Second operand 7 states. [2020-10-29 08:48:22,262 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 66