/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/bitvector/byte_add_2-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:35:16,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:35:16,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:35:16,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:35:16,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:35:16,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:35:16,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:35:16,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:35:16,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:35:16,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:35:16,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:35:16,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:35:16,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:35:16,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:35:16,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:35:16,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:35:16,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:35:16,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:35:16,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:35:16,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:35:16,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:35:16,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:35:16,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:35:16,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:35:16,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:35:16,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:35:16,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:35:16,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:35:16,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:35:16,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:35:16,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:35:16,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:35:16,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:35:16,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:35:16,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:35:16,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:35:16,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:35:16,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:35:16,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:35:16,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:35:16,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:35:16,956 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 [2020-10-28 09:35:16,988 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:35:16,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:35:16,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:35:16,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:35:16,990 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:35:16,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:35:16,991 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:35:16,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:35:16,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:35:16,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:35:16,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:35:16,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:35:16,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:35:16,993 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:35:16,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:35:16,993 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:35:16,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:35:16,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:35:16,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:35:16,996 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:35:16,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:35:16,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:35:16,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:35:16,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:35:16,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:35:16,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:35:16,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:35:16,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:35:16,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:35:16,998 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:35:17,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:35:17,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:35:17,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:35:17,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:35:17,434 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:35:17,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/byte_add_2-2.i [2020-10-28 09:35:17,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1dcc0e81/bef2e4cae5554f0fb18a9fbb892410c6/FLAG1dba58d3a [2020-10-28 09:35:18,250 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:35:18,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/byte_add_2-2.i [2020-10-28 09:35:18,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1dcc0e81/bef2e4cae5554f0fb18a9fbb892410c6/FLAG1dba58d3a [2020-10-28 09:35:18,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1dcc0e81/bef2e4cae5554f0fb18a9fbb892410c6 [2020-10-28 09:35:18,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:35:18,626 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:35:18,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:35:18,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:35:18,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:35:18,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:35:18" (1/1) ... [2020-10-28 09:35:18,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a25bbf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:18, skipping insertion in model container [2020-10-28 09:35:18,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:35:18" (1/1) ... [2020-10-28 09:35:18,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:35:18,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:35:19,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:35:19,048 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:35:19,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:35:19,140 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:35:19,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:19 WrapperNode [2020-10-28 09:35:19,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:35:19,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:35:19,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:35:19,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:35:19,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:19" (1/1) ... [2020-10-28 09:35:19,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:19" (1/1) ... [2020-10-28 09:35:19,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:19" (1/1) ... [2020-10-28 09:35:19,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:19" (1/1) ... [2020-10-28 09:35:19,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:19" (1/1) ... [2020-10-28 09:35:19,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:19" (1/1) ... [2020-10-28 09:35:19,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:19" (1/1) ... [2020-10-28 09:35:19,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:35:19,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:35:19,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:35:19,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:35:19,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:19" (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 [2020-10-28 09:35:19,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:35:19,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:35:19,343 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:35:19,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:35:19,343 INFO L138 BoogieDeclarations]: Found implementation of procedure mp_add [2020-10-28 09:35:19,344 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:35:19,344 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:35:19,344 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:35:19,344 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 09:35:19,345 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 09:35:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:35:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:35:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-28 09:35:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:35:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure mp_add [2020-10-28 09:35:19,348 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:35:19,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:35:19,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:35:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:35:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:35:19,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:35:19,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:35:19,953 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:35:19,953 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 09:35:19,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:35:19 BoogieIcfgContainer [2020-10-28 09:35:19,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:35:19,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:35:19,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:35:19,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:35:19,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:35:18" (1/3) ... [2020-10-28 09:35:19,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc699d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:35:19, skipping insertion in model container [2020-10-28 09:35:19,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:19" (2/3) ... [2020-10-28 09:35:19,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc699d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:35:19, skipping insertion in model container [2020-10-28 09:35:19,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:35:19" (3/3) ... [2020-10-28 09:35:19,965 INFO L111 eAbstractionObserver]: Analyzing ICFG byte_add_2-2.i [2020-10-28 09:35:19,978 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:35:19,984 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:35:19,999 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:35:20,029 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:35:20,029 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:35:20,029 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:35:20,029 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:35:20,029 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:35:20,029 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:35:20,029 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:35:20,030 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:35:20,049 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-10-28 09:35:20,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 09:35:20,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:20,057 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] [2020-10-28 09:35:20,057 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:20,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:20,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1266705012, now seen corresponding path program 1 times [2020-10-28 09:35:20,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:20,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041480610] [2020-10-28 09:35:20,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:20,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:20,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:20,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:20,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 09:35:20,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:35:20,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-28 09:35:20,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:20,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:20,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 09:35:20,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:20,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 09:35:20,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:20,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:20,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:20,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:20,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:20,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 09:35:20,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:20,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:20,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:20,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:20,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:20,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 09:35:20,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:35:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:20,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:20,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:21,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:21,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 09:35:21,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:35:21,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 09:35:21,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:21,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:21,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:21,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:35:21,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:21,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 09:35:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:35:21,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041480610] [2020-10-28 09:35:21,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:35:21,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:35:21,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852471708] [2020-10-28 09:35:21,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:35:21,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:21,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:35:21,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:35:21,077 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-10-28 09:35:21,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:21,171 INFO L93 Difference]: Finished difference Result 84 states and 123 transitions. [2020-10-28 09:35:21,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:35:21,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-28 09:35:21,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:21,183 INFO L225 Difference]: With dead ends: 84 [2020-10-28 09:35:21,183 INFO L226 Difference]: Without dead ends: 50 [2020-10-28 09:35:21,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:35:21,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-28 09:35:21,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-28 09:35:21,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-28 09:35:21,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 76 transitions. [2020-10-28 09:35:21,234 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 76 transitions. Word has length 24 [2020-10-28 09:35:21,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:21,235 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 76 transitions. [2020-10-28 09:35:21,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:35:21,235 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 76 transitions. [2020-10-28 09:35:21,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 09:35:21,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:21,237 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] [2020-10-28 09:35:21,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:35:21,238 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:21,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:21,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1888748595, now seen corresponding path program 1 times [2020-10-28 09:35:21,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:21,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427992735] [2020-10-28 09:35:21,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:21,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:21,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:21,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:21,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:21,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 09:35:21,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:35:21,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-28 09:35:21,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:21,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:21,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:35:21,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:35:21,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:21,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:21,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:21,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:21,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:21,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:21,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:21,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:35:21,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:21,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:21,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:21,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:21,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:21,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:21,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:35:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:21,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:21,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:21,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:21,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:21,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 09:35:21,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:35:21,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 09:35:21,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:21,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:21,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:35:21,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:35:21,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:21,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:21,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:35:21,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427992735] [2020-10-28 09:35:21,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:35:21,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:35:21,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599804965] [2020-10-28 09:35:21,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:35:21,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:21,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:35:21,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:35:21,927 INFO L87 Difference]: Start difference. First operand 50 states and 76 transitions. Second operand 5 states. [2020-10-28 09:35:22,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:22,609 INFO L93 Difference]: Finished difference Result 132 states and 218 transitions. [2020-10-28 09:35:22,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:35:22,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-28 09:35:22,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:22,614 INFO L225 Difference]: With dead ends: 132 [2020-10-28 09:35:22,614 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 09:35:22,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:35:22,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 09:35:22,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 71. [2020-10-28 09:35:22,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-28 09:35:22,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 102 transitions. [2020-10-28 09:35:22,632 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 102 transitions. Word has length 24 [2020-10-28 09:35:22,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:22,633 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 102 transitions. [2020-10-28 09:35:22,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:35:22,633 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 102 transitions. [2020-10-28 09:35:22,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 09:35:22,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:22,634 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] [2020-10-28 09:35:22,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:35:22,635 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:22,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:22,636 INFO L82 PathProgramCache]: Analyzing trace with hash -25852498, now seen corresponding path program 1 times [2020-10-28 09:35:22,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:22,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555534813] [2020-10-28 09:35:22,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:22,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:22,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:22,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:22,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:22,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 09:35:22,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:35:22,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-28 09:35:22,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:22,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:22,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:35:22,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 09:35:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 09:35:22,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:23,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:23,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:23,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:23,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:23,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:23,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:35:23,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:23,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:23,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:23,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:35:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:23,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:23,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:23,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:23,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:23,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 09:35:23,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:35:23,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-28 09:35:23,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:23,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:23,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:35:23,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:35:23,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 09:35:23,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:35:23,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555534813] [2020-10-28 09:35:23,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:35:23,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:35:23,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428352873] [2020-10-28 09:35:23,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:35:23,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:23,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:35:23,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:35:23,387 INFO L87 Difference]: Start difference. First operand 71 states and 102 transitions. Second operand 5 states. [2020-10-28 09:35:23,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:23,985 INFO L93 Difference]: Finished difference Result 171 states and 262 transitions. [2020-10-28 09:35:23,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:35:23,985 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-28 09:35:23,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:23,988 INFO L225 Difference]: With dead ends: 171 [2020-10-28 09:35:23,988 INFO L226 Difference]: Without dead ends: 132 [2020-10-28 09:35:23,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:35:23,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-28 09:35:24,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 87. [2020-10-28 09:35:24,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 09:35:24,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 123 transitions. [2020-10-28 09:35:24,007 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 123 transitions. Word has length 25 [2020-10-28 09:35:24,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:24,008 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 123 transitions. [2020-10-28 09:35:24,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:35:24,008 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 123 transitions. [2020-10-28 09:35:24,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 09:35:24,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:24,010 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] [2020-10-28 09:35:24,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:35:24,010 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:24,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:24,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1709215458, now seen corresponding path program 1 times [2020-10-28 09:35:24,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:24,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923474399] [2020-10-28 09:35:24,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:24,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:24,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:24,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:24,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:25,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:25,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 09:35:25,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:35:25,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1130 [2020-10-28 09:35:25,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:25,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:25,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:25,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 09:35:25,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 09:35:25,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:25,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:25,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:25,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:25,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:25,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:25,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 09:35:25,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:25,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:25,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:25,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:25,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:25,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:25,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:35:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:25,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:25,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:25,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:25,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:25,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 09:35:25,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:35:25,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-28 09:35:25,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:25,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:25,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:25,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:35:25,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 09:35:25,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:35:25,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923474399] [2020-10-28 09:35:25,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:35:25,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:35:25,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432763538] [2020-10-28 09:35:25,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:35:25,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:25,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:35:25,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:35:25,694 INFO L87 Difference]: Start difference. First operand 87 states and 123 transitions. Second operand 4 states. [2020-10-28 09:35:26,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:26,032 INFO L93 Difference]: Finished difference Result 148 states and 228 transitions. [2020-10-28 09:35:26,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:35:26,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-28 09:35:26,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:26,034 INFO L225 Difference]: With dead ends: 148 [2020-10-28 09:35:26,034 INFO L226 Difference]: Without dead ends: 110 [2020-10-28 09:35:26,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:35:26,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-28 09:35:26,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 89. [2020-10-28 09:35:26,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-28 09:35:26,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 123 transitions. [2020-10-28 09:35:26,054 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 123 transitions. Word has length 26 [2020-10-28 09:35:26,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:26,059 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 123 transitions. [2020-10-28 09:35:26,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:35:26,059 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 123 transitions. [2020-10-28 09:35:26,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 09:35:26,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:26,061 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] [2020-10-28 09:35:26,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:35:26,062 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:26,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:26,064 INFO L82 PathProgramCache]: Analyzing trace with hash -696360905, now seen corresponding path program 1 times [2020-10-28 09:35:26,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:26,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107903276] [2020-10-28 09:35:26,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:26,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:26,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:26,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:26,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:26,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:26,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:26,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:26,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:27,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:27,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:29,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:29,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 09:35:29,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 09:35:29,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3156 [2020-10-28 09:35:29,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:29,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:29,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:35:29,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:35:29,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:35:29,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 09:35:29,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:29,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:29,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:29,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:29,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:29,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:35:29,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:29,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:29,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:29,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:29,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:29,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:35:29,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:35:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:29,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:29,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:29,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:29,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:29,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:29,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:29,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:29,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:29,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:30,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:30,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 09:35:30,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:35:30,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1139 [2020-10-28 09:35:30,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:30,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:35:30,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:35:30,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:35:30,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:30,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:35:30,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107903276] [2020-10-28 09:35:30,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:35:30,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 09:35:30,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145981521] [2020-10-28 09:35:30,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:35:30,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:30,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:35:30,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:35:30,525 INFO L87 Difference]: Start difference. First operand 89 states and 123 transitions. Second operand 6 states. [2020-10-28 09:35:31,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:31,474 INFO L93 Difference]: Finished difference Result 287 states and 436 transitions. [2020-10-28 09:35:31,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 09:35:31,475 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-28 09:35:31,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:31,478 INFO L225 Difference]: With dead ends: 287 [2020-10-28 09:35:31,478 INFO L226 Difference]: Without dead ends: 235 [2020-10-28 09:35:31,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:35:31,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-28 09:35:31,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 147. [2020-10-28 09:35:31,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-28 09:35:31,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 206 transitions. [2020-10-28 09:35:31,518 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 206 transitions. Word has length 32 [2020-10-28 09:35:31,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:31,521 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 206 transitions. [2020-10-28 09:35:31,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:35:31,521 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 206 transitions. [2020-10-28 09:35:31,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 09:35:31,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:31,526 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] [2020-10-28 09:35:31,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:35:31,527 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:31,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:31,527 INFO L82 PathProgramCache]: Analyzing trace with hash 557945255, now seen corresponding path program 1 times [2020-10-28 09:35:31,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:31,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881777108] [2020-10-28 09:35:31,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:31,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:31,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:31,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:31,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:31,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:31,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:31,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:31,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:32,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:32,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:34,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:34,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 09:35:34,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 09:35:34,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3445 [2020-10-28 09:35:34,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:34,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:35:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:35:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:35:34,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:35,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:35,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:35,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:35,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:35,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:35,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:35:35,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:35,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:35,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:35,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:35,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:35,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:35,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:35:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:35,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:35,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:35,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:35,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:35,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:35,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:35,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:35,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:35,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:35,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:37,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:37,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 09:35:37,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 09:35:37,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2504 [2020-10-28 09:35:37,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:37,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:37,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:35:37,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:35:37,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 09:35:37,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 09:35:37,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 09:35:37,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881777108] [2020-10-28 09:35:37,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:35:37,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 09:35:37,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815289850] [2020-10-28 09:35:37,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:35:37,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:37,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:35:37,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:35:37,670 INFO L87 Difference]: Start difference. First operand 147 states and 206 transitions. Second operand 6 states. [2020-10-28 09:35:38,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:38,190 INFO L93 Difference]: Finished difference Result 238 states and 342 transitions. [2020-10-28 09:35:38,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:35:38,192 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-28 09:35:38,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:38,194 INFO L225 Difference]: With dead ends: 238 [2020-10-28 09:35:38,194 INFO L226 Difference]: Without dead ends: 122 [2020-10-28 09:35:38,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:35:38,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-28 09:35:38,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-10-28 09:35:38,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-28 09:35:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 171 transitions. [2020-10-28 09:35:38,222 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 171 transitions. Word has length 33 [2020-10-28 09:35:38,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:38,222 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 171 transitions. [2020-10-28 09:35:38,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:35:38,223 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 171 transitions. [2020-10-28 09:35:38,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 09:35:38,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:38,227 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] [2020-10-28 09:35:38,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 09:35:38,228 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:38,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:38,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1412525860, now seen corresponding path program 1 times [2020-10-28 09:35:38,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:38,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634895598] [2020-10-28 09:35:38,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:38,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:40,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:40,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:40,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:40,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:41,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:41,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:41,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:41,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:41,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:43,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 09:35:43,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-28 09:35:43,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:35:43,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:43,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:43,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:35:43,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 09:35:43,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 09:35:43,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:43,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:43,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:43,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:43,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:43,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:35:43,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:43,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:43,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:43,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:43,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:43,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:43,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:35:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:43,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:44,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:44,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:44,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:44,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:44,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:44,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:45,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:45,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:45,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:45,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:45,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:48,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:48,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 09:35:48,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-28 09:35:48,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:35:48,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:48,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:48,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:35:48,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:35:48,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 09:35:48,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:48,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:35:48,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634895598] [2020-10-28 09:35:48,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:35:48,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:35:48,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747802686] [2020-10-28 09:35:48,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:35:48,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:48,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:35:48,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:35:48,371 INFO L87 Difference]: Start difference. First operand 122 states and 171 transitions. Second operand 5 states. [2020-10-28 09:35:48,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:48,783 INFO L93 Difference]: Finished difference Result 250 states and 383 transitions. [2020-10-28 09:35:48,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:35:48,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-28 09:35:48,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:48,786 INFO L225 Difference]: With dead ends: 250 [2020-10-28 09:35:48,786 INFO L226 Difference]: Without dead ends: 177 [2020-10-28 09:35:48,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:35:48,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-28 09:35:48,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 172. [2020-10-28 09:35:48,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-28 09:35:48,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 245 transitions. [2020-10-28 09:35:48,812 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 245 transitions. Word has length 39 [2020-10-28 09:35:48,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:48,812 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 245 transitions. [2020-10-28 09:35:48,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:35:48,813 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 245 transitions. [2020-10-28 09:35:48,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 09:35:48,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:48,816 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] [2020-10-28 09:35:48,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 09:35:48,816 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:48,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:48,817 INFO L82 PathProgramCache]: Analyzing trace with hash 743158391, now seen corresponding path program 1 times [2020-10-28 09:35:48,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:48,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511176920] [2020-10-28 09:35:48,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:48,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:48,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:48,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:48,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:48,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:48,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:48,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:49,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:49,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:49,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:49,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:49,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:52,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:52,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:52,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:52,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:52,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:52,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:52,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:52,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:52,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:52,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:52,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:52,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:52,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:52,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:53,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:53,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:53,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:53,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:53,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:53,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:53,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:53,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:53,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:53,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:53,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 09:35:53,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 39 [2020-10-28 09:35:53,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 09:35:53,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:53,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:35:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 09:35:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 09:35:53,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:53,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:53,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:53,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:53,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:53,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:53,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:35:53,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:53,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:53,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:53,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:35:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:53,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:53,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:53,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:53,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:53,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:54,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:54,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:54,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:54,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:54,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:54,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:54,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:54,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:54,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:54,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:58,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 09:35:58,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 33 [2020-10-28 09:35:58,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:35:58,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:58,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:58,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:35:58,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:35:58,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 09:35:58,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:58,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:35:58,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511176920] [2020-10-28 09:35:58,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:35:58,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:35:58,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169573874] [2020-10-28 09:35:58,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:35:58,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:58,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:35:58,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:35:58,978 INFO L87 Difference]: Start difference. First operand 172 states and 245 transitions. Second operand 5 states. [2020-10-28 09:35:59,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:59,385 INFO L93 Difference]: Finished difference Result 314 states and 466 transitions. [2020-10-28 09:35:59,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:35:59,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-28 09:35:59,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:59,388 INFO L225 Difference]: With dead ends: 314 [2020-10-28 09:35:59,388 INFO L226 Difference]: Without dead ends: 212 [2020-10-28 09:35:59,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:35:59,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-28 09:35:59,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 196. [2020-10-28 09:35:59,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-28 09:35:59,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 274 transitions. [2020-10-28 09:35:59,400 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 274 transitions. Word has length 45 [2020-10-28 09:35:59,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:59,401 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 274 transitions. [2020-10-28 09:35:59,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:35:59,401 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 274 transitions. [2020-10-28 09:35:59,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 09:35:59,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:59,402 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] [2020-10-28 09:35:59,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 09:35:59,402 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:59,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:59,403 INFO L82 PathProgramCache]: Analyzing trace with hash -277909963, now seen corresponding path program 1 times [2020-10-28 09:35:59,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:59,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254296862] [2020-10-28 09:35:59,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:59,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:00,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:00,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:00,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:00,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:00,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:03,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:03,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:03,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:03,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:04,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 09:36:04,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 42 [2020-10-28 09:36:04,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:36:04,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:04,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:04,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:04,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 09:36:04,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:36:04,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:04,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:04,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:04,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:04,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:04,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:04,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:04,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:04,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:04,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:04,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:04,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:36:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:04,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:07,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:07,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:07,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:07,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:07,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:07,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:07,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:07,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:07,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:07,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:07,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:07,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:07,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:09,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:09,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 09:36:09,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 68 [2020-10-28 09:36:09,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:36:09,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:09,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:09,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:36:09,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:36:09,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:36:09,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:09,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 09:36:09,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254296862] [2020-10-28 09:36:09,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:36:09,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:36:09,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039841577] [2020-10-28 09:36:09,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:36:09,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:09,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:36:09,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:36:09,542 INFO L87 Difference]: Start difference. First operand 196 states and 274 transitions. Second operand 5 states. [2020-10-28 09:36:09,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:09,856 INFO L93 Difference]: Finished difference Result 346 states and 502 transitions. [2020-10-28 09:36:09,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:36:09,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-28 09:36:09,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:09,859 INFO L225 Difference]: With dead ends: 346 [2020-10-28 09:36:09,860 INFO L226 Difference]: Without dead ends: 217 [2020-10-28 09:36:09,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:36:09,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-28 09:36:09,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 180. [2020-10-28 09:36:09,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-28 09:36:09,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 248 transitions. [2020-10-28 09:36:09,872 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 248 transitions. Word has length 45 [2020-10-28 09:36:09,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:09,872 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 248 transitions. [2020-10-28 09:36:09,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:36:09,872 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 248 transitions. [2020-10-28 09:36:09,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 09:36:09,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:09,873 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:36:09,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 09:36:09,874 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:09,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:09,874 INFO L82 PathProgramCache]: Analyzing trace with hash -446345012, now seen corresponding path program 1 times [2020-10-28 09:36:09,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:09,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850731856] [2020-10-28 09:36:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:09,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:09,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:09,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:09,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:09,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:09,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:09,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:10,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:10,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:10,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:10,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:10,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:10,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:10,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:10,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:10,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:10,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:10,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:10,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:10,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:10,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:10,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:10,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:10,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:10,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:14,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:14,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:14,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:14,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:14,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:14,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:14,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:14,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 09:36:14,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 55 [2020-10-28 09:36:14,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:36:14,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:14,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:14,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:36:14,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 09:36:14,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:36:14,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:14,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:14,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:14,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:14,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:14,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:14,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:36:14,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:14,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:14,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:14,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:14,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:14,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:14,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:36:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:14,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:14,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:14,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:14,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:15,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:15,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:15,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:15,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:15,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:15,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:15,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:15,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:15,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:15,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:15,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:17,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:17,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:17,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:17,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:17,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:17,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:17,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:17,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:17,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:17,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:17,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:17,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:17,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:18,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:18,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:18,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:18,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:18,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:19,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 09:36:19,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 45 [2020-10-28 09:36:19,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:36:19,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:19,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:19,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:36:19,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:36:19,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:36:19,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:20,036 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:36:20,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850731856] [2020-10-28 09:36:20,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:36:20,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:36:20,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79737693] [2020-10-28 09:36:20,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:36:20,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:20,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:36:20,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:36:20,040 INFO L87 Difference]: Start difference. First operand 180 states and 248 transitions. Second operand 5 states. [2020-10-28 09:36:20,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:20,421 INFO L93 Difference]: Finished difference Result 320 states and 453 transitions. [2020-10-28 09:36:20,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:36:20,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-28 09:36:20,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:20,423 INFO L225 Difference]: With dead ends: 320 [2020-10-28 09:36:20,424 INFO L226 Difference]: Without dead ends: 193 [2020-10-28 09:36:20,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:36:20,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-28 09:36:20,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 187. [2020-10-28 09:36:20,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-28 09:36:20,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 251 transitions. [2020-10-28 09:36:20,439 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 251 transitions. Word has length 48 [2020-10-28 09:36:20,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:20,440 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 251 transitions. [2020-10-28 09:36:20,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:36:20,440 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 251 transitions. [2020-10-28 09:36:20,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 09:36:20,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:20,442 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 09:36:20,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 09:36:20,443 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:20,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:20,443 INFO L82 PathProgramCache]: Analyzing trace with hash 243810942, now seen corresponding path program 1 times [2020-10-28 09:36:20,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:20,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505051507] [2020-10-28 09:36:20,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:20,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:20,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:20,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:20,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:20,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:20,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:20,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:20,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:20,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:20,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:20,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:20,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:20,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:20,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:23,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:23,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:23,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:23,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:23,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:23,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:23,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:23,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:23,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:23,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:23,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:23,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:23,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:23,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:25,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 09:36:25,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 66 [2020-10-28 09:36:25,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:36:25,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:25,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:25,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:36:25,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 09:36:25,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 09:36:25,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:25,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:25,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:25,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:25,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:25,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:25,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:25,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:25,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:25,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:36:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:25,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:27,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:27,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:27,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:27,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:27,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:27,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:27,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:27,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:27,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:27,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:27,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:30,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:30,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:30,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:30,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:30,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:30,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:30,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:30,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:30,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:30,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 09:36:30,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 69 [2020-10-28 09:36:30,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:36:30,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:30,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:30,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:36:30,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 09:36:30,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 09:36:30,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:30,577 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 09:36:30,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505051507] [2020-10-28 09:36:30,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:36:30,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:36:30,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690645965] [2020-10-28 09:36:30,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:36:30,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:30,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:36:30,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:36:30,580 INFO L87 Difference]: Start difference. First operand 187 states and 251 transitions. Second operand 5 states. [2020-10-28 09:36:31,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:31,087 INFO L93 Difference]: Finished difference Result 438 states and 614 transitions. [2020-10-28 09:36:31,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:36:31,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-10-28 09:36:31,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:31,090 INFO L225 Difference]: With dead ends: 438 [2020-10-28 09:36:31,090 INFO L226 Difference]: Without dead ends: 309 [2020-10-28 09:36:31,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:36:31,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-28 09:36:31,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 230. [2020-10-28 09:36:31,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-28 09:36:31,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 317 transitions. [2020-10-28 09:36:31,113 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 317 transitions. Word has length 52 [2020-10-28 09:36:31,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:31,113 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 317 transitions. [2020-10-28 09:36:31,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:36:31,113 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 317 transitions. [2020-10-28 09:36:31,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 09:36:31,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:31,117 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-28 09:36:31,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 09:36:31,117 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:31,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:31,118 INFO L82 PathProgramCache]: Analyzing trace with hash -706895182, now seen corresponding path program 1 times [2020-10-28 09:36:31,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:31,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001446698] [2020-10-28 09:36:31,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:31,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:31,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:31,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:31,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:31,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:31,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:31,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:31,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:31,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:31,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:31,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:31,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:31,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:31,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:31,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:31,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:31,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:31,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:31,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:32,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:32,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:32,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:33,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:33,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:33,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:33,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:33,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:33,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:33,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:33,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:36,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 09:36:36,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 39 [2020-10-28 09:36:36,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:36:36,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:36,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:36,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:36:36,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 09:36:36,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:36:36,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:36,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:36,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:36,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:36,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:36,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:36,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:36,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:36,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:36,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:36,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:36,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:36,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:36:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:36,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:40,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:40,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:40,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:40,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:40,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:40,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:40,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:40,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:40,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:40,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:40,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:41,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 09:36:41,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 103 [2020-10-28 09:36:41,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:36:41,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:41,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:41,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:36:41,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 09:36:41,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 09:36:41,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:41,295 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 09:36:41,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001446698] [2020-10-28 09:36:41,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:36:41,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:36:41,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066097093] [2020-10-28 09:36:41,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:36:41,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:41,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:36:41,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:36:41,297 INFO L87 Difference]: Start difference. First operand 230 states and 317 transitions. Second operand 5 states. [2020-10-28 09:36:41,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:41,712 INFO L93 Difference]: Finished difference Result 415 states and 584 transitions. [2020-10-28 09:36:41,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:36:41,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-28 09:36:41,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:41,716 INFO L225 Difference]: With dead ends: 415 [2020-10-28 09:36:41,716 INFO L226 Difference]: Without dead ends: 232 [2020-10-28 09:36:41,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:36:41,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-28 09:36:41,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 223. [2020-10-28 09:36:41,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-28 09:36:41,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 290 transitions. [2020-10-28 09:36:41,729 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 290 transitions. Word has length 61 [2020-10-28 09:36:41,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:41,729 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 290 transitions. [2020-10-28 09:36:41,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:36:41,730 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 290 transitions. [2020-10-28 09:36:41,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 09:36:41,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:41,731 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 09:36:41,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 09:36:41,731 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:41,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:41,732 INFO L82 PathProgramCache]: Analyzing trace with hash -562800924, now seen corresponding path program 1 times [2020-10-28 09:36:41,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:41,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400277075] [2020-10-28 09:36:41,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:41,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... 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[2020-10-28 09:36:44,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:45,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:45,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:45,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:46,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 09:36:46,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 67 [2020-10-28 09:36:46,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:36:46,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:46,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 09:36:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:36:46,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:46,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:46,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:46,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:46,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:46,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:46,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:46,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:46,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:46,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:46,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:46,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:46,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:36:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:46,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:51,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:51,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-28 09:36:51,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 103 [2020-10-28 09:36:51,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 09:36:51,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:51,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:51,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:51,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 09:36:51,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:36:51,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-28 09:36:51,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400277075] [2020-10-28 09:36:51,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:36:51,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:36:51,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518005554] [2020-10-28 09:36:51,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:36:51,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:51,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:36:51,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:36:51,865 INFO L87 Difference]: Start difference. First operand 223 states and 290 transitions. Second operand 4 states. [2020-10-28 09:36:52,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:52,063 INFO L93 Difference]: Finished difference Result 297 states and 375 transitions. [2020-10-28 09:36:52,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:36:52,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-28 09:36:52,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:52,066 INFO L225 Difference]: With dead ends: 297 [2020-10-28 09:36:52,066 INFO L226 Difference]: Without dead ends: 285 [2020-10-28 09:36:52,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:36:52,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-28 09:36:52,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 261. [2020-10-28 09:36:52,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-28 09:36:52,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 338 transitions. [2020-10-28 09:36:52,096 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 338 transitions. Word has length 65 [2020-10-28 09:36:52,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:52,097 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 338 transitions. [2020-10-28 09:36:52,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:36:52,098 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 338 transitions. [2020-10-28 09:36:52,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 09:36:52,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:52,099 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:36:52,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 09:36:52,099 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:52,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:52,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1738021666, now seen corresponding path program 1 times [2020-10-28 09:36:52,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:52,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495855759] [2020-10-28 09:36:52,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:52,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:52,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:52,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:52,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:52,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:52,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:52,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:52,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:52,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:52,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:54,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:54,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:54,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:54,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:55,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:55,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:55,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:55,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:55,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:55,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:55,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:55,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:55,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:55,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:55,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:55,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:55,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:55,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:55,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:56,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:56,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:56,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:56,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:56,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:56,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:56,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:56,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:56,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:57,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 09:36:57,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 46 [2020-10-28 09:36:57,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 09:36:57,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:57,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:57,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:36:57,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 09:36:57,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 09:36:57,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:57,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:57,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:57,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:57,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:57,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:36:57,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:57,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:57,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:57,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:57,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:57,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:57,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:36:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:57,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:00,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:00,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:00,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:01,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:01,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:01,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:01,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:01,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:01,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:01,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:01,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:02,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:02,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:02,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:02,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:02,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-28 09:37:02,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 95 [2020-10-28 09:37:02,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 09:37:02,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:02,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:37:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 09:37:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:37:02,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-28 09:37:02,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495855759] [2020-10-28 09:37:02,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:37:02,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:37:02,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593990222] [2020-10-28 09:37:02,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:37:02,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:02,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:37:02,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:37:02,255 INFO L87 Difference]: Start difference. First operand 261 states and 338 transitions. Second operand 5 states. [2020-10-28 09:37:02,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:02,779 INFO L93 Difference]: Finished difference Result 722 states and 989 transitions. [2020-10-28 09:37:02,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:37:02,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-28 09:37:02,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:02,785 INFO L225 Difference]: With dead ends: 722 [2020-10-28 09:37:02,786 INFO L226 Difference]: Without dead ends: 491 [2020-10-28 09:37:02,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:37:02,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-10-28 09:37:02,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 255. [2020-10-28 09:37:02,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-28 09:37:02,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 332 transitions. [2020-10-28 09:37:02,805 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 332 transitions. Word has length 65 [2020-10-28 09:37:02,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:02,806 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 332 transitions. [2020-10-28 09:37:02,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:37:02,806 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 332 transitions. [2020-10-28 09:37:02,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 09:37:02,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:02,807 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 09:37:02,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 09:37:02,808 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:02,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:02,808 INFO L82 PathProgramCache]: Analyzing trace with hash -894507702, now seen corresponding path program 1 times [2020-10-28 09:37:02,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:02,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652732805] [2020-10-28 09:37:02,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:02,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:02,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:02,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:02,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:02,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:06,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:06,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:06,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:06,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:06,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:06,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:06,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:06,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:06,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:06,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:06,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:06,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:06,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:06,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:06,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:06,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:06,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:07,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:07,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:07,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:07,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 09:37:07,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 100 [2020-10-28 09:37:07,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 09:37:07,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:07,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:37:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 09:37:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 09:37:07,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:07,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:07,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:07,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:07,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:07,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:07,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:07,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:07,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:07,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:07,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:07,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:07,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:07,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:07,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:07,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:07,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:07,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:07,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:10,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:10,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:10,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:10,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:10,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:10,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:10,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:10,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:10,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:10,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:10,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:10,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:12,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 09:37:12,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 106 [2020-10-28 09:37:12,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 09:37:12,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:12,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:37:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 09:37:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 09:37:12,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:13,015 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-28 09:37:13,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652732805] [2020-10-28 09:37:13,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:13,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:37:13,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670660023] [2020-10-28 09:37:13,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:37:13,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:13,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:37:13,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:37:13,017 INFO L87 Difference]: Start difference. First operand 255 states and 332 transitions. Second operand 5 states. [2020-10-28 09:37:13,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:13,401 INFO L93 Difference]: Finished difference Result 526 states and 700 transitions. [2020-10-28 09:37:13,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:37:13,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-28 09:37:13,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:13,404 INFO L225 Difference]: With dead ends: 526 [2020-10-28 09:37:13,404 INFO L226 Difference]: Without dead ends: 312 [2020-10-28 09:37:13,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:37:13,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-28 09:37:13,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 299. [2020-10-28 09:37:13,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-10-28 09:37:13,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 380 transitions. [2020-10-28 09:37:13,425 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 380 transitions. Word has length 74 [2020-10-28 09:37:13,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:13,426 INFO L481 AbstractCegarLoop]: Abstraction has 299 states and 380 transitions. [2020-10-28 09:37:13,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:37:13,426 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 380 transitions. [2020-10-28 09:37:13,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 09:37:13,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:13,434 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:13,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 09:37:13,434 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:13,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:13,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1295320828, now seen corresponding path program 1 times [2020-10-28 09:37:13,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:13,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317391337] [2020-10-28 09:37:13,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:13,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:18,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 09:37:18,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 76 [2020-10-28 09:37:18,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:37:18,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:18,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:18,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:37:18,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:37:18,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 09:37:18,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:18,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:18,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:18,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:18,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:18,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:18,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:18,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:18,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:18,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:18,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:18,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:19,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:19,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:19,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:19,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:19,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:19,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:19,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:19,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:19,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:19,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:19,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:19,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:19,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:19,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:19,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:19,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:23,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 09:37:23,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 99 [2020-10-28 09:37:23,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 09:37:23,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:23,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:23,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:37:23,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:37:23,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 09:37:23,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:23,667 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-28 09:37:23,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317391337] [2020-10-28 09:37:23,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:37:23,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 09:37:23,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641556578] [2020-10-28 09:37:23,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:37:23,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:23,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:37:23,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:37:23,677 INFO L87 Difference]: Start difference. First operand 299 states and 380 transitions. Second operand 8 states. [2020-10-28 09:37:24,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:24,989 INFO L93 Difference]: Finished difference Result 775 states and 987 transitions. [2020-10-28 09:37:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:37:24,989 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-28 09:37:24,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:24,994 INFO L225 Difference]: With dead ends: 775 [2020-10-28 09:37:24,994 INFO L226 Difference]: Without dead ends: 631 [2020-10-28 09:37:24,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:37:24,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-10-28 09:37:25,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 297. [2020-10-28 09:37:25,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-10-28 09:37:25,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 375 transitions. [2020-10-28 09:37:25,019 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 375 transitions. Word has length 78 [2020-10-28 09:37:25,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:25,020 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 375 transitions. [2020-10-28 09:37:25,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:37:25,020 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 375 transitions. [2020-10-28 09:37:25,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 09:37:25,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:25,021 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:25,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 09:37:25,021 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:25,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:25,023 INFO L82 PathProgramCache]: Analyzing trace with hash -638640848, now seen corresponding path program 1 times [2020-10-28 09:37:25,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:25,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722602324] [2020-10-28 09:37:25,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:25,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:25,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 09:37:25,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:37:25,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 666 [2020-10-28 09:37:25,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:25,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:25,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:37:25,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:37:25,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 09:37:25,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:25,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:25,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:25,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:25,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:25,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:25,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:25,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:25,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:25,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:25,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:25,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:25,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:25,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:26,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:26,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 09:37:26,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:37:26,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-10-28 09:37:26,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:26,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:26,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:37:26,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:37:26,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 09:37:26,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-28 09:37:26,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722602324] [2020-10-28 09:37:26,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:26,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:37:26,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340101241] [2020-10-28 09:37:26,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:37:26,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:26,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:37:26,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:37:26,680 INFO L87 Difference]: Start difference. First operand 297 states and 375 transitions. Second operand 9 states. [2020-10-28 09:37:28,210 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-28 09:37:28,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:28,534 INFO L93 Difference]: Finished difference Result 939 states and 1194 transitions. [2020-10-28 09:37:28,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 09:37:28,535 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-28 09:37:28,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:28,538 INFO L225 Difference]: With dead ends: 939 [2020-10-28 09:37:28,538 INFO L226 Difference]: Without dead ends: 463 [2020-10-28 09:37:28,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:37:28,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-10-28 09:37:28,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 343. [2020-10-28 09:37:28,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-10-28 09:37:28,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 442 transitions. [2020-10-28 09:37:28,570 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 442 transitions. Word has length 82 [2020-10-28 09:37:28,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:28,570 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 442 transitions. [2020-10-28 09:37:28,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:37:28,570 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 442 transitions. [2020-10-28 09:37:28,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 09:37:28,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:28,572 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 09:37:28,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 09:37:28,572 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:28,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:28,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1606938606, now seen corresponding path program 2 times [2020-10-28 09:37:28,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:28,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149717319] [2020-10-28 09:37:28,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:28,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:28,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 09:37:28,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:28,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-28 09:37:28,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:28,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:28,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:28,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 09:37:28,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 09:37:28,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:28,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:28,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:28,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:28,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:28,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:37:28,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:28,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:28,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:28,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:28,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:28,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:28,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:28,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:28,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 09:37:28,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:28,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 09:37:28,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:28,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 09:37:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 09:37:28,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:29,036 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 09:37:29,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149717319] [2020-10-28 09:37:29,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:29,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:37:29,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104640683] [2020-10-28 09:37:29,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:37:29,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:29,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:37:29,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:37:29,038 INFO L87 Difference]: Start difference. First operand 343 states and 442 transitions. Second operand 6 states. [2020-10-28 09:37:29,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:29,490 INFO L93 Difference]: Finished difference Result 804 states and 1031 transitions. [2020-10-28 09:37:29,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:37:29,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-10-28 09:37:29,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:29,494 INFO L225 Difference]: With dead ends: 804 [2020-10-28 09:37:29,494 INFO L226 Difference]: Without dead ends: 530 [2020-10-28 09:37:29,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:37:29,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-10-28 09:37:29,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 398. [2020-10-28 09:37:29,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-28 09:37:29,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 505 transitions. [2020-10-28 09:37:29,522 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 505 transitions. Word has length 82 [2020-10-28 09:37:29,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:29,523 INFO L481 AbstractCegarLoop]: Abstraction has 398 states and 505 transitions. [2020-10-28 09:37:29,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:37:29,523 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 505 transitions. [2020-10-28 09:37:29,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 09:37:29,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:29,524 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:29,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 09:37:29,525 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:29,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:29,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1986428816, now seen corresponding path program 3 times [2020-10-28 09:37:29,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:29,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436669427] [2020-10-28 09:37:29,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 09:37:29,562 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 09:37:29,562 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 09:37:29,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 09:37:29,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:37:29 BoogieIcfgContainer [2020-10-28 09:37:29,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:37:29,614 INFO L168 Benchmark]: Toolchain (without parser) took 130993.07 ms. Allocated memory was 151.0 MB in the beginning and 660.6 MB in the end (delta: 509.6 MB). Free memory was 125.8 MB in the beginning and 543.3 MB in the end (delta: -417.5 MB). Peak memory consumption was 93.0 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:29,619 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 151.0 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:37:29,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 516.03 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 113.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:29,625 INFO L168 Benchmark]: Boogie Preprocessor took 98.01 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 111.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:29,627 INFO L168 Benchmark]: RCFGBuilder took 711.70 ms. Allocated memory is still 151.0 MB. Free memory was 111.8 MB in the beginning and 126.3 MB in the end (delta: -14.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:29,628 INFO L168 Benchmark]: TraceAbstraction took 129655.08 ms. Allocated memory was 151.0 MB in the beginning and 660.6 MB in the end (delta: 509.6 MB). Free memory was 125.8 MB in the beginning and 543.3 MB in the end (delta: -417.5 MB). Peak memory consumption was 91.6 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:29,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 151.0 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 516.03 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 113.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 98.01 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 111.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 711.70 ms. Allocated memory is still 151.0 MB. Free memory was 111.8 MB in the beginning and 126.3 MB in the end (delta: -14.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 129655.08 ms. Allocated memory was 151.0 MB in the beginning and 660.6 MB in the end (delta: 509.6 MB). Free memory was 125.8 MB in the beginning and 543.3 MB in the end (delta: -417.5 MB). Peak memory consumption was 91.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 108, overapproximation of bitwiseAnd at line 88. Possible FailurePath: [L116] unsigned int a, b, r; [L117] a = __VERIFIER_nondet_uint() [L119] b = 234770789 [L121] CALL, EXPR mp_add(a, b) [L34] unsigned char a0, a1, a2, a3; [L35] unsigned char b0, b1, b2, b3; [L36] unsigned char r0, r1, r2, r3; [L37] unsigned short carry; [L38] unsigned short partial_sum; [L39] unsigned int r; [L40] unsigned char i; [L41] unsigned char na, nb; [L42] a0 = a [L43] a1 = a >> 8 [L44] a2 = a >> 16U [L45] a3 = a >> 24U [L46] b0 = b [L47] b1 = b >> 8U [L48] b2 = b >> 16U [L49] b3 = b >> 24U [L50] na = (unsigned char)4 [L51] COND TRUE a3 == (unsigned char)0 [L52] na = na - 1 [L53] COND TRUE a2 == (unsigned char)0 [L54] na = na - 1 [L55] COND TRUE a1 == (unsigned char)0 [L56] na = na - 1 [L60] nb = (unsigned char)4 [L61] COND FALSE !(b3 == (unsigned char)0) [L70] carry = (unsigned short)0 [L71] i = (unsigned char)0 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND TRUE i < na [L76] COND TRUE i == (unsigned char)0 [L76] partial_sum = partial_sum + a0 [L77] COND FALSE !(i == (unsigned char)1) [L78] COND FALSE !(i == (unsigned char)2) [L79] COND FALSE !(i == (unsigned char)3) [L81] COND TRUE i < nb [L82] COND TRUE i == (unsigned char)0 [L82] partial_sum = partial_sum + b0 [L83] COND FALSE !(i == (unsigned char)1) [L84] COND FALSE !(i == (unsigned char)2) [L85] COND FALSE !(i == (unsigned char)3) [L87] COND TRUE partial_sum > ((unsigned char)255) [L88] partial_sum = partial_sum & ((unsigned char)255) [L89] carry = (unsigned short)1 [L91] COND TRUE i == (unsigned char)0 [L91] r0 = (unsigned char)partial_sum [L92] COND FALSE !(i == (unsigned char)1) [L93] COND FALSE !(i == (unsigned char)2) [L94] COND FALSE !(i == (unsigned char)3) [L96] i = i + (unsigned char)1 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND FALSE !(i < na) [L81] COND TRUE i < nb [L82] COND FALSE !(i == (unsigned char)0) [L83] COND TRUE i == (unsigned char)1 [L83] partial_sum = partial_sum + b1 [L84] COND FALSE !(i == (unsigned char)2) [L85] COND FALSE !(i == (unsigned char)3) [L87] COND FALSE !(partial_sum > ((unsigned char)255)) [L91] COND FALSE !(i == (unsigned char)0) [L92] COND TRUE i == (unsigned char)1 [L92] r1 = (unsigned char)partial_sum [L93] COND FALSE !(i == (unsigned char)2) [L94] COND FALSE !(i == (unsigned char)3) [L96] i = i + (unsigned char)1 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND FALSE !(i < na) [L81] COND TRUE i < nb [L82] COND FALSE !(i == (unsigned char)0) [L83] COND FALSE !(i == (unsigned char)1) [L84] COND TRUE i == (unsigned char)2 [L84] partial_sum = partial_sum + b2 [L85] COND FALSE !(i == (unsigned char)3) [L87] COND FALSE !(partial_sum > ((unsigned char)255)) [L91] COND FALSE !(i == (unsigned char)0) [L92] COND FALSE !(i == (unsigned char)1) [L93] COND TRUE i == (unsigned char)2 [L93] r2 = (unsigned char)partial_sum [L94] COND FALSE !(i == (unsigned char)3) [L96] i = i + (unsigned char)1 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND FALSE !(i < na) [L81] COND TRUE i < nb [L82] COND FALSE !(i == (unsigned char)0) [L83] COND FALSE !(i == (unsigned char)1) [L84] COND FALSE !(i == (unsigned char)2) [L85] COND TRUE i == (unsigned char)3 [L85] partial_sum = partial_sum + b3 [L87] COND FALSE !(partial_sum > ((unsigned char)255)) [L91] COND FALSE !(i == (unsigned char)0) [L92] COND FALSE !(i == (unsigned char)1) [L93] COND FALSE !(i == (unsigned char)2) [L94] COND TRUE i == (unsigned char)3 [L94] r3 = (unsigned char)partial_sum [L96] i = i + (unsigned char)1 [L72] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) [L99] COND FALSE !(i < (unsigned char)4) [L108] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L110] return r; [L121] RET, EXPR mp_add(a, b) [L121] r = mp_add(a, b) [L123] CALL __VERIFIER_assert(r == a + b) [L16] COND TRUE !(cond) [L17] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "byte_add_2-2.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 129.5s, OverallIterations: 19, TraceHistogramMax: 4, AutomataDifference: 10.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1145 SDtfs, 2694 SDslu, 324 SDs, 0 SdLazy, 3693 SolverSat, 308 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 228 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=398occurred in iteration=18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 1192 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 117.7s InterpolantComputationTime, 982 NumberOfCodeBlocks, 982 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 882 ConstructedInterpolants, 0 QuantifiedInterpolants, 262736 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 11 PerfectInterpolantSequences, 386/467 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...