/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_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:42:09,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:42:09,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:42:09,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:42:09,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:42:09,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:42:09,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:42:09,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:42:09,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:42:09,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:42:09,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:42:09,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:42:09,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:42:09,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:42:09,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:42:09,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:42:09,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:42:09,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:42:09,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:42:09,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:42:09,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:42:09,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:42:09,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:42:09,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:42:09,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:42:09,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:42:09,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:42:09,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:42:09,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:42:09,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:42:09,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:42:09,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:42:09,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:42:09,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:42:09,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:42:09,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:42:09,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:42:09,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:42:09,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:42:09,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:42:09,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:42:09,916 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 08:42:09,944 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:42:09,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:42:09,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:42:09,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:42:09,947 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:42:09,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:42:09,947 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:42:09,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:42:09,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:42:09,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:42:09,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:42:09,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:42:09,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:42:09,949 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:42:09,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:42:09,949 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:42:09,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:42:09,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:42:09,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:42:09,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:42:09,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:42:09,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:42:09,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:42:09,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:42:09,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:42:09,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:42:09,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:42:09,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:42:09,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:42:09,953 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:42:10,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:42:10,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:42:10,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:42:10,373 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:42:10,374 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:42:10,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label00.c [2020-10-29 08:42:10,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bf04aee0/8797cb10405049f5b0ea57d7fcf49585/FLAG7fa2b45a1 [2020-10-29 08:42:11,701 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:42:11,702 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label00.c [2020-10-29 08:42:11,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bf04aee0/8797cb10405049f5b0ea57d7fcf49585/FLAG7fa2b45a1 [2020-10-29 08:42:11,973 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bf04aee0/8797cb10405049f5b0ea57d7fcf49585 [2020-10-29 08:42:11,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:42:11,985 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:42:11,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:42:11,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:42:11,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:42:11,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:42:11" (1/1) ... [2020-10-29 08:42:12,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cbadeea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:11, skipping insertion in model container [2020-10-29 08:42:12,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:42:11" (1/1) ... [2020-10-29 08:42:12,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:42:12,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:42:14,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:42:14,362 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:42:15,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:42:15,486 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:42:15,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:15 WrapperNode [2020-10-29 08:42:15,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:42:15,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:42:15,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:42:15,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:42:15,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:15" (1/1) ... [2020-10-29 08:42:15,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:15" (1/1) ... [2020-10-29 08:42:15,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:15" (1/1) ... [2020-10-29 08:42:15,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:15" (1/1) ... [2020-10-29 08:42:15,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:15" (1/1) ... [2020-10-29 08:42:15,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:15" (1/1) ... [2020-10-29 08:42:15,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:15" (1/1) ... [2020-10-29 08:42:16,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:42:16,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:42:16,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:42:16,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:42:16,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:15" (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 08:42:16,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:42:16,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:42:16,214 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:42:16,214 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:42:16,214 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:42:16,214 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:42:16,215 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 08:42:16,215 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 08:42:16,215 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 08:42:16,215 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:42:16,216 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:42:16,216 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:42:16,216 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:42:16,217 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 08:42:16,217 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 08:42:16,218 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 08:42:16,218 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:42:16,218 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:42:16,218 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:42:16,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:42:16,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:42:16,219 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:42:16,219 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:42:16,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:42:16,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:42:16,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:42:16,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:42:16,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:42:16,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:42:32,374 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:42:32,375 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:42:32,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:42:32 BoogieIcfgContainer [2020-10-29 08:42:32,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:42:32,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:42:32,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:42:32,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:42:32,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:42:11" (1/3) ... [2020-10-29 08:42:32,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0d1bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:42:32, skipping insertion in model container [2020-10-29 08:42:32,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:15" (2/3) ... [2020-10-29 08:42:32,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0d1bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:42:32, skipping insertion in model container [2020-10-29 08:42:32,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:42:32" (3/3) ... [2020-10-29 08:42:32,395 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label00.c [2020-10-29 08:42:32,409 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:42:32,417 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:42:32,431 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:42:32,481 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:42:32,482 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:42:32,482 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:42:32,482 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:42:32,482 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:42:32,482 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:42:32,482 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:42:32,482 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:42:32,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-29 08:42:32,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 08:42:32,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:42:32,553 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] [2020-10-29 08:42:32,553 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:42:32,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:42:32,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1718469674, now seen corresponding path program 1 times [2020-10-29 08:42:32,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:42:32,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843202634] [2020-10-29 08:42:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:42:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:32,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:33,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:33,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 08:42:33,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:33,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-29 08:42:33,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:33,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:33,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:42:33,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:42:33,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 08:42:33,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:42:33,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:42:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:33,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:33,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:33,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:42:33,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:33,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 08:42:33,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:33,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:33,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:42:33,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:42:33,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:42:33,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:42:33,641 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 08:42:33,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843202634] [2020-10-29 08:42:33,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:42:33,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:42:33,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030021533] [2020-10-29 08:42:33,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:42:33,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:42:33,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:42:33,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:42:33,669 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 4 states. [2020-10-29 08:43:01,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:43:01,631 INFO L93 Difference]: Finished difference Result 5036 states and 9459 transitions. [2020-10-29 08:43:01,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:43:01,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-29 08:43:01,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:43:01,687 INFO L225 Difference]: With dead ends: 5036 [2020-10-29 08:43:01,688 INFO L226 Difference]: Without dead ends: 3191 [2020-10-29 08:43:01,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:43:01,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2020-10-29 08:43:01,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 3185. [2020-10-29 08:43:01,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3185 states. [2020-10-29 08:43:01,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 4966 transitions. [2020-10-29 08:43:01,918 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 4966 transitions. Word has length 47 [2020-10-29 08:43:01,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:43:01,919 INFO L481 AbstractCegarLoop]: Abstraction has 3185 states and 4966 transitions. [2020-10-29 08:43:01,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:43:01,919 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 4966 transitions. [2020-10-29 08:43:01,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 08:43:01,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:43:01,925 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:01,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:43:01,926 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:43:01,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:43:01,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1642291251, now seen corresponding path program 1 times [2020-10-29 08:43:01,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:43:01,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734896451] [2020-10-29 08:43:01,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:43:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:02,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:02,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:02,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:02,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:03,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:03,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 08:43:03,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:43:03,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1525 [2020-10-29 08:43:03,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:03,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:03,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:43:03,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:43:03,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 08:43:03,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:43:03,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:43:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:03,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:03,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:03,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:43:03,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:03,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 08:43:03,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:03,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:03,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:43:03,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:03,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:43:03,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:43:03,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:43:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:03,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:03,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:04,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:04,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:43:04,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:43:04,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-29 08:43:04,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:04,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:04,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:43:04,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:43:04,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:43:04,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:43:04,166 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:43:04,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734896451] [2020-10-29 08:43:04,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:43:04,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:43:04,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844287764] [2020-10-29 08:43:04,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:43:04,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:43:04,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:43:04,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:43:04,173 INFO L87 Difference]: Start difference. First operand 3185 states and 4966 transitions. Second operand 7 states. [2020-10-29 08:43:44,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:43:44,114 INFO L93 Difference]: Finished difference Result 9472 states and 14843 transitions. [2020-10-29 08:43:44,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:43:44,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-29 08:43:44,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:43:44,160 INFO L225 Difference]: With dead ends: 9472 [2020-10-29 08:43:44,160 INFO L226 Difference]: Without dead ends: 6293 [2020-10-29 08:43:44,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:43:44,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6293 states. [2020-10-29 08:43:44,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6293 to 6203. [2020-10-29 08:43:44,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6203 states. [2020-10-29 08:43:44,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6203 states to 6203 states and 9356 transitions. [2020-10-29 08:43:44,465 INFO L78 Accepts]: Start accepts. Automaton has 6203 states and 9356 transitions. Word has length 120 [2020-10-29 08:43:44,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:43:44,466 INFO L481 AbstractCegarLoop]: Abstraction has 6203 states and 9356 transitions. [2020-10-29 08:43:44,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:43:44,466 INFO L276 IsEmpty]: Start isEmpty. Operand 6203 states and 9356 transitions. [2020-10-29 08:43:44,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-29 08:43:44,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:43:44,469 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:44,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:43:44,470 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:43:44,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:43:44,470 INFO L82 PathProgramCache]: Analyzing trace with hash 876366420, now seen corresponding path program 1 times [2020-10-29 08:43:44,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:43:44,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494300225] [2020-10-29 08:43:44,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:43:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:44,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:44,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:45,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:46,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:46,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 08:43:46,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:43:46,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1642 [2020-10-29 08:43:46,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:46,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:46,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:43:46,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:43:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 08:43:46,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:43:46,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:43:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:46,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:46,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:46,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:43:46,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:46,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:43:46,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:46,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:46,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:43:46,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:46,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:43:46,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:46,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:43:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:46,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:46,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:46,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 08:43:46,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:46,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-29 08:43:46,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:46,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:46,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:43:46,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:43:46,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 08:43:46,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:46,697 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:43:46,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494300225] [2020-10-29 08:43:46,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:43:46,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:43:46,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328879550] [2020-10-29 08:43:46,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:43:46,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:43:46,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:43:46,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:43:46,701 INFO L87 Difference]: Start difference. First operand 6203 states and 9356 transitions. Second operand 7 states. [2020-10-29 08:44:41,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:44:41,043 INFO L93 Difference]: Finished difference Result 15554 states and 23358 transitions. [2020-10-29 08:44:41,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:44:41,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-10-29 08:44:41,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:44:41,102 INFO L225 Difference]: With dead ends: 15554 [2020-10-29 08:44:41,103 INFO L226 Difference]: Without dead ends: 9357 [2020-10-29 08:44:41,119 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 08:44:41,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9357 states. [2020-10-29 08:44:41,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9357 to 9115. [2020-10-29 08:44:41,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-10-29 08:44:41,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 12503 transitions. [2020-10-29 08:44:41,362 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 12503 transitions. Word has length 142 [2020-10-29 08:44:41,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:44:41,363 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 12503 transitions. [2020-10-29 08:44:41,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:44:41,363 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 12503 transitions. [2020-10-29 08:44:41,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-29 08:44:41,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:44:41,365 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:44:41,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:44:41,366 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:44:41,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:44:41,367 INFO L82 PathProgramCache]: Analyzing trace with hash 962262215, now seen corresponding path program 1 times [2020-10-29 08:44:41,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:44:41,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75633238] [2020-10-29 08:44:41,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:44:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:41,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:41,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:42,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:42,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:42,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 08:44:42,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:44:42,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1531 [2020-10-29 08:44:42,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:42,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:42,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:44:42,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:44:42,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 08:44:42,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:43,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:44:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:43,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:43,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:43,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:44:43,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:43,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:44:43,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:43,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:43,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:44:43,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:43,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:44:43,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:43,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:44:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:43,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:43,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:43,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 08:44:43,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:43,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-29 08:44:43,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:43,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:44:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:44:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 08:44:43,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:44:43,458 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:44:43,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75633238] [2020-10-29 08:44:43,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:44:43,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:44:43,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770637762] [2020-10-29 08:44:43,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:44:43,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:44:43,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:44:43,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:44:43,467 INFO L87 Difference]: Start difference. First operand 9115 states and 12503 transitions. Second operand 7 states. [2020-10-29 08:44:43,630 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:45:54,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:45:54,768 INFO L93 Difference]: Finished difference Result 27629 states and 38964 transitions. [2020-10-29 08:45:54,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:45:54,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 155 [2020-10-29 08:45:54,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:45:54,852 INFO L225 Difference]: With dead ends: 27629 [2020-10-29 08:45:54,852 INFO L226 Difference]: Without dead ends: 18520 [2020-10-29 08:45:54,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:45:54,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18520 states. [2020-10-29 08:45:55,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18520 to 18030. [2020-10-29 08:45:55,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18030 states. [2020-10-29 08:45:55,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18030 states to 18030 states and 23019 transitions. [2020-10-29 08:45:55,370 INFO L78 Accepts]: Start accepts. Automaton has 18030 states and 23019 transitions. Word has length 155 [2020-10-29 08:45:55,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:45:55,372 INFO L481 AbstractCegarLoop]: Abstraction has 18030 states and 23019 transitions. [2020-10-29 08:45:55,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:45:55,373 INFO L276 IsEmpty]: Start isEmpty. Operand 18030 states and 23019 transitions. [2020-10-29 08:45:55,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-29 08:45:55,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:45:55,384 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:45:55,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:45:55,384 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:45:55,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:45:55,385 INFO L82 PathProgramCache]: Analyzing trace with hash 797485736, now seen corresponding path program 1 times [2020-10-29 08:45:55,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:45:55,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637765732] [2020-10-29 08:45:55,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:45:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:45:55,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:55,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:56,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:57,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:45:57,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-29 08:45:57,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:45:57,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1721 [2020-10-29 08:45:57,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:45:57,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:45:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:45:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:45:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 08:45:57,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:45:57,349 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:45:57,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:45:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:45:57,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:57,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:45:57,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:45:57,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:45:57,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:45:57,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:45:57,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:45:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:45:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:45:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:45:57,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:45:57,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:45:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:45:57,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:57,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:45:57,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:45:57,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:45:57,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-29 08:45:57,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:45:57,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:45:57,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:45:57,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:45:57,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-29 08:45:57,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:45:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:45:57,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637765732] [2020-10-29 08:45:57,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:45:57,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:45:57,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955184853] [2020-10-29 08:45:57,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:45:57,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:45:57,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:45:57,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:45:57,967 INFO L87 Difference]: Start difference. First operand 18030 states and 23019 transitions. Second operand 7 states. [2020-10-29 08:45:58,167 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:46:02,624 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 68