/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_1-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:35:14,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:35:14,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:35:14,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:35:14,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:35:14,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:35:14,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:35:14,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:35:14,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:35:14,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:35:14,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:35:14,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:35:14,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:35:14,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:35:14,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:35:14,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:35:14,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:35:14,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:35:14,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:35:15,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:35:15,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:35:15,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:35:15,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:35:15,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:35:15,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:35:15,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:35:15,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:35:15,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:35:15,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:35:15,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:35:15,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:35:15,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:35:15,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:35:15,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:35:15,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:35:15,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:35:15,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:35:15,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:35:15,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:35:15,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:35:15,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:35:15,079 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 09:35:15,106 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:35:15,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:35:15,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:35:15,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:35:15,109 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:35:15,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:35:15,110 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:35:15,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:35:15,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:35:15,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:35:15,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:35:15,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:35:15,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:35:15,112 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:35:15,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:35:15,112 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:35:15,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:35:15,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:35:15,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:35:15,114 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:35:15,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:35:15,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:35:15,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:35:15,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:35:15,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:35:15,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:35:15,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:35:15,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:35:15,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:35:15,117 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:35:15,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:35:15,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:35:15,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:35:15,573 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:35:15,574 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:35:15,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/byte_add_1-1.i [2020-10-28 09:35:15,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d79efc934/e6e1129db49345c99747bdfe337b968d/FLAGe407f3923 [2020-10-28 09:35:16,216 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:35:16,217 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/byte_add_1-1.i [2020-10-28 09:35:16,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d79efc934/e6e1129db49345c99747bdfe337b968d/FLAGe407f3923 [2020-10-28 09:35:16,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d79efc934/e6e1129db49345c99747bdfe337b968d [2020-10-28 09:35:16,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:35:16,580 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:35:16,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:35:16,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:35:16,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:35:16,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:35:16" (1/1) ... [2020-10-28 09:35:16,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@179a4352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:16, skipping insertion in model container [2020-10-28 09:35:16,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:35:16" (1/1) ... [2020-10-28 09:35:16,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:35:16,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:35:16,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:35:16,949 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:35:16,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:35:17,019 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:35:17,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:17 WrapperNode [2020-10-28 09:35:17,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:35:17,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:35:17,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:35:17,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:35:17,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:17" (1/1) ... [2020-10-28 09:35:17,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:17" (1/1) ... [2020-10-28 09:35:17,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:17" (1/1) ... [2020-10-28 09:35:17,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:17" (1/1) ... [2020-10-28 09:35:17,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:17" (1/1) ... [2020-10-28 09:35:17,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:17" (1/1) ... [2020-10-28 09:35:17,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:17" (1/1) ... [2020-10-28 09:35:17,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:35:17,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:35:17,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:35:17,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:35:17,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:17" (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 09:35:17,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:35:17,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:35:17,200 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:35:17,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:35:17,201 INFO L138 BoogieDeclarations]: Found implementation of procedure mp_add [2020-10-28 09:35:17,201 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:35:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:35:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:35:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 09:35:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 09:35:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:35:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:35:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-28 09:35:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:35:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure mp_add [2020-10-28 09:35:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:35:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:35:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:35:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:35:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:35:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:35:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:35:17,713 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:35:17,714 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 09:35:17,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:35:17 BoogieIcfgContainer [2020-10-28 09:35:17,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:35:17,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:35:17,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:35:17,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:35:17,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:35:16" (1/3) ... [2020-10-28 09:35:17,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c8c636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:35:17, skipping insertion in model container [2020-10-28 09:35:17,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:17" (2/3) ... [2020-10-28 09:35:17,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c8c636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:35:17, skipping insertion in model container [2020-10-28 09:35:17,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:35:17" (3/3) ... [2020-10-28 09:35:17,725 INFO L111 eAbstractionObserver]: Analyzing ICFG byte_add_1-1.i [2020-10-28 09:35:17,738 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:35:17,743 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:35:17,757 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:35:17,787 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:35:17,787 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:35:17,787 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:35:17,787 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:35:17,787 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:35:17,788 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:35:17,788 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:35:17,788 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:35:17,808 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-10-28 09:35:17,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 09:35:17,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:17,816 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] [2020-10-28 09:35:17,816 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:17,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:17,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1266705012, now seen corresponding path program 1 times [2020-10-28 09:35:17,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:17,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615045846] [2020-10-28 09:35:17,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:18,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:18,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:18,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:18,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 09:35:18,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:35:18,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-28 09:35:18,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:18,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:18,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:18,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 09:35:18,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:18,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 09:35:18,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:18,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:18,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:18,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:18,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:18,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 09:35:18,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:18,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:18,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:18,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:18,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:18,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:18,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:35:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:18,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:18,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:18,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:18,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 09:35:18,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:35:18,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 09:35:18,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:18,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:18,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:18,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:35:18,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:18,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:18,833 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 09:35:18,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615045846] [2020-10-28 09:35:18,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:35:18,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:35:18,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037838869] [2020-10-28 09:35:18,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:35:18,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:18,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:35:18,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:35:18,864 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-10-28 09:35:18,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:18,941 INFO L93 Difference]: Finished difference Result 84 states and 123 transitions. [2020-10-28 09:35:18,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:35:18,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-28 09:35:18,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:18,953 INFO L225 Difference]: With dead ends: 84 [2020-10-28 09:35:18,953 INFO L226 Difference]: Without dead ends: 50 [2020-10-28 09:35:18,957 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 09:35:18,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-28 09:35:19,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-28 09:35:19,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-28 09:35:19,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 76 transitions. [2020-10-28 09:35:19,006 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 76 transitions. Word has length 24 [2020-10-28 09:35:19,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:19,007 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 76 transitions. [2020-10-28 09:35:19,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:35:19,007 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 76 transitions. [2020-10-28 09:35:19,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 09:35:19,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:19,009 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 09:35:19,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:35:19,010 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:19,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:19,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1888748595, now seen corresponding path program 1 times [2020-10-28 09:35:19,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:19,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242654397] [2020-10-28 09:35:19,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:19,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:19,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:19,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:19,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:19,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 09:35:19,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:35:19,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-10-28 09:35:19,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:19,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:19,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:35:19,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:35:19,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:19,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 09:35:19,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:19,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:19,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:19,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:19,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:19,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:35:19,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:19,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:19,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:19,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:19,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:19,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:19,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:35:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:19,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:19,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:19,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:19,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:19,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 09:35:19,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:35:19,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 09:35:19,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:19,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:19,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:35:19,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:35:19,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:19,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:19,819 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 09:35:19,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242654397] [2020-10-28 09:35:19,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:35:19,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:35:19,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919995089] [2020-10-28 09:35:19,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:35:19,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:19,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:35:19,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:35:19,825 INFO L87 Difference]: Start difference. First operand 50 states and 76 transitions. Second operand 5 states. [2020-10-28 09:35:20,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:20,418 INFO L93 Difference]: Finished difference Result 132 states and 218 transitions. [2020-10-28 09:35:20,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:35:20,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-28 09:35:20,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:20,423 INFO L225 Difference]: With dead ends: 132 [2020-10-28 09:35:20,423 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 09:35:20,424 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 09:35:20,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 09:35:20,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 71. [2020-10-28 09:35:20,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-28 09:35:20,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 102 transitions. [2020-10-28 09:35:20,440 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 102 transitions. Word has length 24 [2020-10-28 09:35:20,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:20,440 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 102 transitions. [2020-10-28 09:35:20,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:35:20,441 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 102 transitions. [2020-10-28 09:35:20,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 09:35:20,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:20,442 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 09:35:20,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:35:20,459 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:20,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:20,460 INFO L82 PathProgramCache]: Analyzing trace with hash -25852498, now seen corresponding path program 1 times [2020-10-28 09:35:20,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:20,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26072824] [2020-10-28 09:35:20,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:20,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:20,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:20,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:20,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:21,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:21,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 09:35:21,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:35:21,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 794 [2020-10-28 09:35:21,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:21,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:21,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:35:21,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 09:35:21,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 09:35:21,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:21,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:21,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:21,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:21,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:21,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:21,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:35:21,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:21,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:21,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:21,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:21,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:21,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:21,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:35:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:21,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:21,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:21,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:21,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:21,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 09:35:21,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:35:21,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 09:35:21,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:21,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:35:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:35:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 09:35:21,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:21,559 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 09:35:21,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26072824] [2020-10-28 09:35:21,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:35:21,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:35:21,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677732014] [2020-10-28 09:35:21,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:35:21,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:21,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:35:21,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:35:21,562 INFO L87 Difference]: Start difference. First operand 71 states and 102 transitions. Second operand 5 states. [2020-10-28 09:35:22,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:22,071 INFO L93 Difference]: Finished difference Result 171 states and 262 transitions. [2020-10-28 09:35:22,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:35:22,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-28 09:35:22,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:22,074 INFO L225 Difference]: With dead ends: 171 [2020-10-28 09:35:22,075 INFO L226 Difference]: Without dead ends: 132 [2020-10-28 09:35:22,076 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 09:35:22,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-28 09:35:22,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 87. [2020-10-28 09:35:22,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 09:35:22,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 123 transitions. [2020-10-28 09:35:22,090 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 123 transitions. Word has length 25 [2020-10-28 09:35:22,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:22,091 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 123 transitions. [2020-10-28 09:35:22,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:35:22,091 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 123 transitions. [2020-10-28 09:35:22,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 09:35:22,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:22,093 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 09:35:22,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:35:22,093 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:22,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:22,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1709215458, now seen corresponding path program 1 times [2020-10-28 09:35:22,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:22,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996218189] [2020-10-28 09:35:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:22,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:22,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:22,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:22,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:23,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:23,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 09:35:23,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:35:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 892 [2020-10-28 09:35:23,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:23,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:23,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 09:35:23,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 09:35:23,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:23,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:23,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:23,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:23,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:23,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:23,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:35:23,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:23,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:23,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:23,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:35:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:23,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:23,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:23,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:23,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:23,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 09:35:23,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:35:23,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-28 09:35:23,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:23,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:23,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:23,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:35:23,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 09:35:23,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:23,411 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 09:35:23,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996218189] [2020-10-28 09:35:23,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:35:23,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:35:23,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036501704] [2020-10-28 09:35:23,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:35:23,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:23,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:35:23,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:35:23,414 INFO L87 Difference]: Start difference. First operand 87 states and 123 transitions. Second operand 4 states. [2020-10-28 09:35:23,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:23,686 INFO L93 Difference]: Finished difference Result 148 states and 228 transitions. [2020-10-28 09:35:23,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:35:23,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-28 09:35:23,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:23,690 INFO L225 Difference]: With dead ends: 148 [2020-10-28 09:35:23,690 INFO L226 Difference]: Without dead ends: 110 [2020-10-28 09:35:23,691 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 09:35:23,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-28 09:35:23,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 89. [2020-10-28 09:35:23,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-28 09:35:23,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 123 transitions. [2020-10-28 09:35:23,703 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 123 transitions. Word has length 26 [2020-10-28 09:35:23,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:23,704 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 123 transitions. [2020-10-28 09:35:23,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:35:23,704 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 123 transitions. [2020-10-28 09:35:23,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 09:35:23,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:23,705 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 09:35:23,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:35:23,706 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:23,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:23,706 INFO L82 PathProgramCache]: Analyzing trace with hash -696360905, now seen corresponding path program 1 times [2020-10-28 09:35:23,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:23,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086561093] [2020-10-28 09:35:23,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:23,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:23,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:23,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:23,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:23,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:23,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:23,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:24,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:24,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:24,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:26,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:26,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 09:35:26,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 09:35:26,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3002 [2020-10-28 09:35:26,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:26,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:26,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:35:26,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:35:26,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:35:26,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:26,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:26,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:26,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:26,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:26,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:26,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:35:26,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:26,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:26,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:26,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:26,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:26,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:26,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:35:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:26,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:26,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:26,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:26,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:26,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:26,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:27,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:27,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:27,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:27,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:27,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 09:35:27,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:35:27,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 935 [2020-10-28 09:35:27,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:27,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:35:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:35:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:35:27,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:27,762 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 09:35:27,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086561093] [2020-10-28 09:35:27,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:35:27,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 09:35:27,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29524724] [2020-10-28 09:35:27,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:35:27,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:27,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:35:27,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:35:27,765 INFO L87 Difference]: Start difference. First operand 89 states and 123 transitions. Second operand 6 states. [2020-10-28 09:35:28,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:28,559 INFO L93 Difference]: Finished difference Result 287 states and 436 transitions. [2020-10-28 09:35:28,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 09:35:28,560 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-28 09:35:28,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:28,562 INFO L225 Difference]: With dead ends: 287 [2020-10-28 09:35:28,562 INFO L226 Difference]: Without dead ends: 235 [2020-10-28 09:35:28,565 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 09:35:28,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-28 09:35:28,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 147. [2020-10-28 09:35:28,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-28 09:35:28,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 206 transitions. [2020-10-28 09:35:28,604 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 206 transitions. Word has length 32 [2020-10-28 09:35:28,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:28,605 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 206 transitions. [2020-10-28 09:35:28,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:35:28,605 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 206 transitions. [2020-10-28 09:35:28,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 09:35:28,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:28,607 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 09:35:28,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:35:28,611 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:28,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:28,611 INFO L82 PathProgramCache]: Analyzing trace with hash 557945255, now seen corresponding path program 1 times [2020-10-28 09:35:28,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:28,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329775278] [2020-10-28 09:35:28,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:28,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:29,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:29,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:29,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:32,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:32,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 09:35:32,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 09:35:32,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4175 [2020-10-28 09:35:32,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:32,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:35:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:35:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 09:35:32,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:32,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:32,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:32,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:32,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:32,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:32,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:35:32,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:32,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:32,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:32,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:32,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:32,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:32,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:35:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:32,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:32,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:32,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:32,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:32,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:32,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:33,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:33,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:33,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:33,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:33,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 09:35:33,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:35:33,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1120 [2020-10-28 09:35:33,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:33,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:33,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:35:33,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 09:35:33,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 09:35:33,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:34,013 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 09:35:34,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329775278] [2020-10-28 09:35:34,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:35:34,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:35:34,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93508066] [2020-10-28 09:35:34,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:35:34,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:34,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:35:34,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:35:34,016 INFO L87 Difference]: Start difference. First operand 147 states and 206 transitions. Second operand 5 states. [2020-10-28 09:35:34,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:34,391 INFO L93 Difference]: Finished difference Result 276 states and 419 transitions. [2020-10-28 09:35:34,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:35:34,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-10-28 09:35:34,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:34,393 INFO L225 Difference]: With dead ends: 276 [2020-10-28 09:35:34,393 INFO L226 Difference]: Without dead ends: 203 [2020-10-28 09:35:34,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:35:34,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-28 09:35:34,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 198. [2020-10-28 09:35:34,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-28 09:35:34,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 281 transitions. [2020-10-28 09:35:34,431 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 281 transitions. Word has length 33 [2020-10-28 09:35:34,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:34,431 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 281 transitions. [2020-10-28 09:35:34,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:35:34,431 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 281 transitions. [2020-10-28 09:35:34,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 09:35:34,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:34,434 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 09:35:34,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 09:35:34,434 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:34,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:34,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1828018502, now seen corresponding path program 1 times [2020-10-28 09:35:34,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:34,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677509940] [2020-10-28 09:35:34,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:34,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:34,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:34,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:34,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:34,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:34,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:34,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:34,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:34,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:34,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:35,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:35,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:35,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:36,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:36,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:36,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:36,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:36,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:36,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:36,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:36,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:37,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:37,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:37,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:37,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:37,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:39,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:39,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 09:35:39,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-28 09:35:39,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 09:35:39,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:39,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:39,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:35:39,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 09:35:39,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:35:39,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:39,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:39,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:39,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:39,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:39,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:39,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:35:39,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:39,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:39,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:39,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:39,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:39,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:39,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:35:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:39,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:39,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:39,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:39,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:39,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:39,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:39,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:39,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:39,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:40,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:40,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:41,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:41,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:41,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:41,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:41,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:42,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:42,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:42,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:42,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:42,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:44,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:44,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 09:35:44,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-10-28 09:35:44,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:35:44,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:44,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:44,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:35:44,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 09:35:44,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:35:44,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:35:44,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677509940] [2020-10-28 09:35:44,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:35:44,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:35:44,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656916215] [2020-10-28 09:35:44,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:35:44,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:44,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:35:44,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:35:44,575 INFO L87 Difference]: Start difference. First operand 198 states and 281 transitions. Second operand 5 states. [2020-10-28 09:35:44,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:44,920 INFO L93 Difference]: Finished difference Result 340 states and 502 transitions. [2020-10-28 09:35:44,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:35:44,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-28 09:35:44,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:44,922 INFO L225 Difference]: With dead ends: 340 [2020-10-28 09:35:44,922 INFO L226 Difference]: Without dead ends: 238 [2020-10-28 09:35:44,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:35:44,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-28 09:35:44,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 222. [2020-10-28 09:35:44,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-28 09:35:44,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 310 transitions. [2020-10-28 09:35:44,935 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 310 transitions. Word has length 39 [2020-10-28 09:35:44,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:44,935 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 310 transitions. [2020-10-28 09:35:44,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:35:44,936 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 310 transitions. [2020-10-28 09:35:44,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 09:35:44,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:44,938 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 09:35:44,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 09:35:44,938 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:44,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:44,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1445880440, now seen corresponding path program 1 times [2020-10-28 09:35:44,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:44,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698838339] [2020-10-28 09:35:44,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:44,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:44,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:44,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:45,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:45,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:45,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:45,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:45,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:45,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:45,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:45,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:45,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:45,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:45,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:45,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:46,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:46,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:46,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:46,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:46,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:46,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:46,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:46,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:46,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:46,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:46,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:46,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:46,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:47,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:47,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:47,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:47,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:49,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:49,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 09:35:49,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 32 [2020-10-28 09:35:49,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 09:35:49,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:49,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:35:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:35:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 09:35:49,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:50,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:50,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:50,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:50,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:50,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:35:50,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:50,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:50,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:50,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:50,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:50,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:50,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:35:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:50,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:50,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:51,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:51,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:51,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:51,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:51,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:51,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:55,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 09:35:55,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-10-28 09:35:55,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:35:55,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:55,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:55,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:35:55,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 09:35:55,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 09:35:55,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:55,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:35:55,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698838339] [2020-10-28 09:35:55,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:35:55,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:35:55,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111403746] [2020-10-28 09:35:55,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:35:55,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:55,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:35:55,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:35:55,124 INFO L87 Difference]: Start difference. First operand 222 states and 310 transitions. Second operand 6 states. [2020-10-28 09:35:55,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:55,715 INFO L93 Difference]: Finished difference Result 428 states and 629 transitions. [2020-10-28 09:35:55,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:35:55,716 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-10-28 09:35:55,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:55,718 INFO L225 Difference]: With dead ends: 428 [2020-10-28 09:35:55,718 INFO L226 Difference]: Without dead ends: 290 [2020-10-28 09:35:55,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:35:55,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-28 09:35:55,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 282. [2020-10-28 09:35:55,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-28 09:35:55,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 397 transitions. [2020-10-28 09:35:55,733 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 397 transitions. Word has length 39 [2020-10-28 09:35:55,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:55,734 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 397 transitions. [2020-10-28 09:35:55,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:35:55,734 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 397 transitions. [2020-10-28 09:35:55,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 09:35:55,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:55,736 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 09:35:55,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 09:35:55,736 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:55,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:55,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1523100493, now seen corresponding path program 2 times [2020-10-28 09:35:55,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:55,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159550285] [2020-10-28 09:35:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:55,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:56,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:00,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:00,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:00,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 09:36:00,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 72 [2020-10-28 09:36:00,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 09:36:00,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:00,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:00,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:36:00,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:36:00,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 09:36:00,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:00,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:00,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:00,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:00,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:00,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:00,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:00,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:00,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:00,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:00,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:00,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:00,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:00,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:36:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:00,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:00,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:00,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:00,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:00,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:00,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:00,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:00,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:00,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:00,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:00,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:01,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:03,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:03,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:03,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:04,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:05,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 09:36:05,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 63 [2020-10-28 09:36:05,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 09:36:05,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:05,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:05,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:36:05,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 09:36:05,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:36:05,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:36:05,869 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 09:36:05,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159550285] [2020-10-28 09:36:05,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:36:05,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:36:05,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579362330] [2020-10-28 09:36:05,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:36:05,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:05,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:36:05,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:36:05,872 INFO L87 Difference]: Start difference. First operand 282 states and 397 transitions. Second operand 5 states. [2020-10-28 09:36:06,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:06,422 INFO L93 Difference]: Finished difference Result 653 states and 949 transitions. [2020-10-28 09:36:06,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:36:06,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-28 09:36:06,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:06,431 INFO L225 Difference]: With dead ends: 653 [2020-10-28 09:36:06,431 INFO L226 Difference]: Without dead ends: 459 [2020-10-28 09:36:06,434 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 09:36:06,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-10-28 09:36:06,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 322. [2020-10-28 09:36:06,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-10-28 09:36:06,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 452 transitions. [2020-10-28 09:36:06,458 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 452 transitions. Word has length 45 [2020-10-28 09:36:06,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:06,459 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 452 transitions. [2020-10-28 09:36:06,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:36:06,459 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 452 transitions. [2020-10-28 09:36:06,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 09:36:06,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:06,464 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 09:36:06,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 09:36:06,465 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:06,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:06,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1513149389, now seen corresponding path program 1 times [2020-10-28 09:36:06,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:06,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585707690] [2020-10-28 09:36:06,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:06,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:07,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:07,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:07,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:07,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:07,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:07,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:09,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:09,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:09,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:09,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:09,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:09,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:11,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 09:36:11,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 35 [2020-10-28 09:36:11,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:36:11,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:11,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:11,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:36:11,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 09:36:11,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 09:36:11,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:11,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:11,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:11,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:11,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:11,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:11,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:11,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:11,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:11,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:11,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:11,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:11,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:36:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:11,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:11,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:13,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:13,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:13,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:13,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:13,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:13,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:13,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:13,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:13,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:13,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:13,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:13,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:13,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:13,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:13,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:13,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:13,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:14,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:14,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:14,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:14,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:14,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:14,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:14,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:14,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:14,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:14,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:15,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:15,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:16,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:16,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:16,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:16,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:16,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:16,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:16,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 09:36:16,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 60 [2020-10-28 09:36:16,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 09:36:16,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:16,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:36:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:36:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 09:36:16,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:16,624 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:36:16,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585707690] [2020-10-28 09:36:16,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:36:16,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 09:36:16,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699844591] [2020-10-28 09:36:16,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:36:16,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:16,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:36:16,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:36:16,627 INFO L87 Difference]: Start difference. First operand 322 states and 452 transitions. Second operand 8 states. [2020-10-28 09:36:19,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:19,337 INFO L93 Difference]: Finished difference Result 1673 states and 2513 transitions. [2020-10-28 09:36:19,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 09:36:19,337 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-10-28 09:36:19,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:19,346 INFO L225 Difference]: With dead ends: 1673 [2020-10-28 09:36:19,346 INFO L226 Difference]: Without dead ends: 1394 [2020-10-28 09:36:19,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=216, Invalid=540, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:36:19,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2020-10-28 09:36:19,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1045. [2020-10-28 09:36:19,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1045 states. [2020-10-28 09:36:19,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1455 transitions. [2020-10-28 09:36:19,435 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1455 transitions. Word has length 45 [2020-10-28 09:36:19,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:19,436 INFO L481 AbstractCegarLoop]: Abstraction has 1045 states and 1455 transitions. [2020-10-28 09:36:19,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:36:19,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1455 transitions. [2020-10-28 09:36:19,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 09:36:19,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:19,437 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 09:36:19,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 09:36:19,438 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:19,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:19,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1465121252, now seen corresponding path program 1 times [2020-10-28 09:36:19,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:19,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732031859] [2020-10-28 09:36:19,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:19,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:19,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:20,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:20,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:20,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:20,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:21,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:23,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:24,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 09:36:24,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 60 [2020-10-28 09:36:24,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:36:24,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:24,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:24,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:36:24,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 09:36:24,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 09:36:24,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:24,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:24,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:24,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:24,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:24,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:36:24,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:24,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:24,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:24,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:24,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:24,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:24,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:36:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:24,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:25,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:26,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:26,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:26,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:26,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:26,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:26,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:26,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:26,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:26,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:26,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:27,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:27,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:27,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:27,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:27,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:27,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:27,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:27,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:27,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:29,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 09:36:29,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 81 [2020-10-28 09:36:29,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:36:29,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:29,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:29,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:36:29,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:36:29,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 09:36:29,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:36:29,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732031859] [2020-10-28 09:36:29,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:36:29,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:36:29,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484428668] [2020-10-28 09:36:29,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:36:29,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:29,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:36:29,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:36:29,636 INFO L87 Difference]: Start difference. First operand 1045 states and 1455 transitions. Second operand 10 states. [2020-10-28 09:36:30,461 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-10-28 09:36:33,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:33,419 INFO L93 Difference]: Finished difference Result 3261 states and 4572 transitions. [2020-10-28 09:36:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-28 09:36:33,420 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-10-28 09:36:33,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:33,431 INFO L225 Difference]: With dead ends: 3261 [2020-10-28 09:36:33,431 INFO L226 Difference]: Without dead ends: 2295 [2020-10-28 09:36:33,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=323, Invalid=1083, Unknown=0, NotChecked=0, Total=1406 [2020-10-28 09:36:33,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2020-10-28 09:36:33,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 1444. [2020-10-28 09:36:33,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-10-28 09:36:33,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1872 transitions. [2020-10-28 09:36:33,518 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1872 transitions. Word has length 46 [2020-10-28 09:36:33,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:33,519 INFO L481 AbstractCegarLoop]: Abstraction has 1444 states and 1872 transitions. [2020-10-28 09:36:33,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:36:33,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1872 transitions. [2020-10-28 09:36:33,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 09:36:33,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:33,521 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:36:33,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 09:36:33,521 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:33,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:33,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1283085737, now seen corresponding path program 1 times [2020-10-28 09:36:33,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:33,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739263835] [2020-10-28 09:36:33,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:33,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:33,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:33,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:33,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:33,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:33,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:33,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:33,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:38,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 09:36:38,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 68 [2020-10-28 09:36:38,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 09:36:38,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:38,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:38,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:38,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 09:36:38,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:36:38,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:38,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:38,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:38,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:38,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:38,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:38,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:38,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:38,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:38,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:36:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:38,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:40,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:40,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:40,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:43,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 09:36:43,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 67 [2020-10-28 09:36:43,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:36:43,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:43,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:43,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:43,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 09:36:43,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:36:43,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:43,625 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 09:36:43,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739263835] [2020-10-28 09:36:43,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:36:43,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:36:43,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989955481] [2020-10-28 09:36:43,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:36:43,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:43,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:36:43,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:36:43,628 INFO L87 Difference]: Start difference. First operand 1444 states and 1872 transitions. Second operand 4 states. [2020-10-28 09:36:43,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:43,896 INFO L93 Difference]: Finished difference Result 1998 states and 2530 transitions. [2020-10-28 09:36:43,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:36:43,897 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-28 09:36:43,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:43,905 INFO L225 Difference]: With dead ends: 1998 [2020-10-28 09:36:43,906 INFO L226 Difference]: Without dead ends: 1950 [2020-10-28 09:36:43,907 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 09:36:43,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2020-10-28 09:36:43,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1884. [2020-10-28 09:36:43,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-28 09:36:44,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2354 transitions. [2020-10-28 09:36:44,009 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2354 transitions. Word has length 53 [2020-10-28 09:36:44,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:44,009 INFO L481 AbstractCegarLoop]: Abstraction has 1884 states and 2354 transitions. [2020-10-28 09:36:44,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:36:44,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2354 transitions. [2020-10-28 09:36:44,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 09:36:44,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:44,012 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:36:44,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 09:36:44,012 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:44,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:44,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1260453483, now seen corresponding path program 1 times [2020-10-28 09:36:44,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:44,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965457286] [2020-10-28 09:36:44,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:44,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:45,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:45,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:45,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:45,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:45,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:45,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:45,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:49,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 09:36:49,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 50 [2020-10-28 09:36:49,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:36:49,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:49,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:49,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:36:49,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 09:36:49,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 09:36:49,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:49,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:49,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:49,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:49,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:49,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:36:49,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:49,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:49,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:49,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:49,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:49,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:49,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:36:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:49,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:51,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:51,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:51,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:51,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:51,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:51,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:51,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:51,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:51,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:51,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:52,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:54,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:54,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:54,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:54,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:54,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:54,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 09:36:54,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 95 [2020-10-28 09:36:54,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:36:54,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:54,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:36:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:36:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 09:36:54,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:54,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:36:54,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965457286] [2020-10-28 09:36:54,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:36:54,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:36:54,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907363897] [2020-10-28 09:36:54,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:36:54,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:54,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:36:54,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:36:54,205 INFO L87 Difference]: Start difference. First operand 1884 states and 2354 transitions. Second operand 10 states. [2020-10-28 09:36:58,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:58,265 INFO L93 Difference]: Finished difference Result 5128 states and 6439 transitions. [2020-10-28 09:36:58,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 09:36:58,265 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-10-28 09:36:58,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:58,284 INFO L225 Difference]: With dead ends: 5128 [2020-10-28 09:36:58,284 INFO L226 Difference]: Without dead ends: 3927 [2020-10-28 09:36:58,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=377, Invalid=1345, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 09:36:58,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2020-10-28 09:36:58,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 2967. [2020-10-28 09:36:58,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2967 states. [2020-10-28 09:36:58,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 3701 transitions. [2020-10-28 09:36:58,448 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 3701 transitions. Word has length 53 [2020-10-28 09:36:58,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:58,448 INFO L481 AbstractCegarLoop]: Abstraction has 2967 states and 3701 transitions. [2020-10-28 09:36:58,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:36:58,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 3701 transitions. [2020-10-28 09:36:58,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 09:36:58,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:58,451 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:36:58,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 09:36:58,452 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:58,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:58,452 INFO L82 PathProgramCache]: Analyzing trace with hash -608916663, now seen corresponding path program 1 times [2020-10-28 09:36:58,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:58,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486577692] [2020-10-28 09:36:58,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:58,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:00,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:02,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:03,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 09:37:03,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 36 [2020-10-28 09:37:03,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:37:03,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:03,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:03,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:03,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 09:37:03,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 09:37:03,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:03,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:03,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:03,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:03,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:03,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:03,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:03,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:03,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:03,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:03,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:03,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:03,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:03,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:03,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:08,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 09:37:08,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 33 [2020-10-28 09:37:08,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:37:08,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:08,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:08,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:08,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 09:37:08,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 09:37:08,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 09:37:08,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486577692] [2020-10-28 09:37:08,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:08,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:37:08,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051703035] [2020-10-28 09:37:08,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:37:08,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:08,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:37:08,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:37:08,575 INFO L87 Difference]: Start difference. First operand 2967 states and 3701 transitions. Second operand 6 states. [2020-10-28 09:37:09,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:09,191 INFO L93 Difference]: Finished difference Result 5920 states and 7463 transitions. [2020-10-28 09:37:09,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:37:09,192 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-28 09:37:09,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:09,205 INFO L225 Difference]: With dead ends: 5920 [2020-10-28 09:37:09,206 INFO L226 Difference]: Without dead ends: 3086 [2020-10-28 09:37:09,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:37:09,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2020-10-28 09:37:09,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 2570. [2020-10-28 09:37:09,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2570 states. [2020-10-28 09:37:09,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2570 states to 2570 states and 3168 transitions. [2020-10-28 09:37:09,363 INFO L78 Accepts]: Start accepts. Automaton has 2570 states and 3168 transitions. Word has length 57 [2020-10-28 09:37:09,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:09,363 INFO L481 AbstractCegarLoop]: Abstraction has 2570 states and 3168 transitions. [2020-10-28 09:37:09,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:37:09,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2570 states and 3168 transitions. [2020-10-28 09:37:09,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 09:37:09,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:09,366 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:09,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 09:37:09,367 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:09,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:09,367 INFO L82 PathProgramCache]: Analyzing trace with hash -91422182, now seen corresponding path program 1 times [2020-10-28 09:37:09,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:09,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766303200] [2020-10-28 09:37:09,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:09,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:09,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 09:37:09,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:37:09,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-28 09:37:09,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:09,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:09,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:09,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:37:09,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:37:09,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:09,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:09,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:09,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:09,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:09,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:37:09,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:09,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:09,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:09,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:09,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:10,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:10,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 09:37:10,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:37:10,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-28 09:37:10,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:10,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:10,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:10,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:37:10,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 09:37:10,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:10,103 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-28 09:37:10,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766303200] [2020-10-28 09:37:10,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:37:10,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 09:37:10,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115432732] [2020-10-28 09:37:10,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:37:10,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:10,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:37:10,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:37:10,106 INFO L87 Difference]: Start difference. First operand 2570 states and 3168 transitions. Second operand 6 states. [2020-10-28 09:37:10,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:10,743 INFO L93 Difference]: Finished difference Result 3425 states and 4213 transitions. [2020-10-28 09:37:10,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:37:10,744 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-28 09:37:10,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:10,748 INFO L225 Difference]: With dead ends: 3425 [2020-10-28 09:37:10,748 INFO L226 Difference]: Without dead ends: 864 [2020-10-28 09:37:10,755 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 09:37:10,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-10-28 09:37:10,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2020-10-28 09:37:10,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 864 states. [2020-10-28 09:37:10,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1054 transitions. [2020-10-28 09:37:10,800 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1054 transitions. Word has length 63 [2020-10-28 09:37:10,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:10,802 INFO L481 AbstractCegarLoop]: Abstraction has 864 states and 1054 transitions. [2020-10-28 09:37:10,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:37:10,802 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1054 transitions. [2020-10-28 09:37:10,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-28 09:37:10,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:10,804 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:10,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 09:37:10,804 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:10,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:10,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1048991529, now seen corresponding path program 1 times [2020-10-28 09:37:10,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:10,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560109567] [2020-10-28 09:37:10,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:10,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:10,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:10,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:10,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:10,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:11,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:13,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:15,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 09:37:15,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 75 [2020-10-28 09:37:15,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 09:37:15,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:15,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:15,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:37:15,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:37:15,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 09:37:15,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:15,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:15,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:15,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:15,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:15,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:15,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:15,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:15,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:15,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:15,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:15,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:16,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:17,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:17,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:17,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:17,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:17,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:17,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:17,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:17,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:17,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:17,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:17,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:17,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:17,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:17,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:17,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:17,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:17,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:17,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:17,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:20,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:20,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 09:37:20,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 74 [2020-10-28 09:37:20,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:37:20,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:20,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:37:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:37:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 09:37:20,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-28 09:37:20,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560109567] [2020-10-28 09:37:20,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:37:20,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:37:20,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693649567] [2020-10-28 09:37:20,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:37:20,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:20,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:37:20,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:37:20,978 INFO L87 Difference]: Start difference. First operand 864 states and 1054 transitions. Second operand 5 states. [2020-10-28 09:37:21,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:21,248 INFO L93 Difference]: Finished difference Result 1770 states and 2175 transitions. [2020-10-28 09:37:21,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:37:21,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-10-28 09:37:21,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:21,253 INFO L225 Difference]: With dead ends: 1770 [2020-10-28 09:37:21,254 INFO L226 Difference]: Without dead ends: 1005 [2020-10-28 09:37:21,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 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 09:37:21,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2020-10-28 09:37:21,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 872. [2020-10-28 09:37:21,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2020-10-28 09:37:21,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1056 transitions. [2020-10-28 09:37:21,305 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1056 transitions. Word has length 75 [2020-10-28 09:37:21,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:21,305 INFO L481 AbstractCegarLoop]: Abstraction has 872 states and 1056 transitions. [2020-10-28 09:37:21,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:37:21,305 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1056 transitions. [2020-10-28 09:37:21,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 09:37:21,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:21,307 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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, 1, 1, 1, 1, 1] [2020-10-28 09:37:21,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 09:37:21,308 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:21,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:21,309 INFO L82 PathProgramCache]: Analyzing trace with hash -901507802, now seen corresponding path program 1 times [2020-10-28 09:37:21,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:21,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369907793] [2020-10-28 09:37:21,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:21,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:21,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:23,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:24,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:24,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:24,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:24,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:24,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:24,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:24,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:24,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:24,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:24,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:24,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:24,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:24,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:24,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:24,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:24,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:24,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:24,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:24,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:26,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:26,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:26,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:26,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:26,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:26,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 09:37:26,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 95 [2020-10-28 09:37:26,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:37:26,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:26,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:26,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 09:37:26,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 09:37:26,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:26,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:26,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:26,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:26,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:26,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:26,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:26,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:26,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:26,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:26,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:26,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:26,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:26,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:26,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:26,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:26,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:26,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:26,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:26,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:27,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:27,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:27,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:27,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:27,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:28,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:29,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:29,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:29,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:29,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:29,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:29,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:29,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:29,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:29,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:29,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:29,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:29,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:29,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:30,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:30,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:30,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:30,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:30,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:30,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:30,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:30,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:30,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:30,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:30,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:31,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:31,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 09:37:31,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 66 [2020-10-28 09:37:31,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 09:37:31,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:31,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:31,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:37:31,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:37:31,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 09:37:31,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 25 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 09:37:31,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369907793] [2020-10-28 09:37:31,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:31,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 09:37:31,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658097728] [2020-10-28 09:37:31,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:37:31,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:31,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:37:31,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:37:31,693 INFO L87 Difference]: Start difference. First operand 872 states and 1056 transitions. Second operand 8 states. [2020-10-28 09:37:31,908 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2020-10-28 09:37:32,345 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-28 09:37:32,701 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2020-10-28 09:37:33,042 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-10-28 09:37:33,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:33,110 INFO L93 Difference]: Finished difference Result 1811 states and 2224 transitions. [2020-10-28 09:37:33,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:37:33,110 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-28 09:37:33,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:33,114 INFO L225 Difference]: With dead ends: 1811 [2020-10-28 09:37:33,115 INFO L226 Difference]: Without dead ends: 1040 [2020-10-28 09:37:33,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:37:33,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2020-10-28 09:37:33,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 748. [2020-10-28 09:37:33,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-10-28 09:37:33,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 874 transitions. [2020-10-28 09:37:33,163 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 874 transitions. Word has length 78 [2020-10-28 09:37:33,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:33,164 INFO L481 AbstractCegarLoop]: Abstraction has 748 states and 874 transitions. [2020-10-28 09:37:33,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:37:33,164 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 874 transitions. [2020-10-28 09:37:33,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 09:37:33,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:33,166 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 09:37:33,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 09:37:33,166 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:33,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:33,167 INFO L82 PathProgramCache]: Analyzing trace with hash -122024200, now seen corresponding path program 1 times [2020-10-28 09:37:33,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:33,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010881555] [2020-10-28 09:37:33,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:33,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:33,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:34,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:34,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 09:37:34,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:37:34,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-10-28 09:37:34,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:34,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:34,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:37:34,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:37:34,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 09:37:34,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:34,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:34,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:34,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:34,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:34,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:34,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:34,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:34,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:34,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:34,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:34,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:34,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:34,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:34,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:34,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:35,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:35,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 09:37:35,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:37:35,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 828 [2020-10-28 09:37:35,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:35,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:37:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:37:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 09:37:35,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:35,383 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 1 proven. 56 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-28 09:37:35,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010881555] [2020-10-28 09:37:35,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:35,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:37:35,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271773998] [2020-10-28 09:37:35,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:37:35,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:35,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:37:35,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:37:35,398 INFO L87 Difference]: Start difference. First operand 748 states and 874 transitions. Second operand 9 states. [2020-10-28 09:37:35,922 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-28 09:37:36,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:36,975 INFO L93 Difference]: Finished difference Result 2383 states and 2760 transitions. [2020-10-28 09:37:36,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:37:36,976 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-28 09:37:36,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:36,982 INFO L225 Difference]: With dead ends: 2383 [2020-10-28 09:37:36,982 INFO L226 Difference]: Without dead ends: 1260 [2020-10-28 09:37:36,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:37:36,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2020-10-28 09:37:37,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1085. [2020-10-28 09:37:37,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2020-10-28 09:37:37,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1258 transitions. [2020-10-28 09:37:37,065 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1258 transitions. Word has length 82 [2020-10-28 09:37:37,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:37,065 INFO L481 AbstractCegarLoop]: Abstraction has 1085 states and 1258 transitions. [2020-10-28 09:37:37,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:37:37,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1258 transitions. [2020-10-28 09:37:37,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 09:37:37,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:37,068 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 09:37:37,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 09:37:37,068 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:37,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:37,068 INFO L82 PathProgramCache]: Analyzing trace with hash 2123555254, now seen corresponding path program 2 times [2020-10-28 09:37:37,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:37,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402640621] [2020-10-28 09:37:37,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:37,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:37,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:37,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 09:37:37,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:37,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-28 09:37:37,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:37,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:37,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:37,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 09:37:37,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 09:37:37,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:37,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:37,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:37,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:37,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:37,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:37,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:37,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:37,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:37,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:37,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:37,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:37,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:37,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:37,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:37,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:37,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 09:37:37,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:37,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-28 09:37:37,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:37,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 09:37:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 09:37:37,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:37,621 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 09:37:37,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402640621] [2020-10-28 09:37:37,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:37,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:37:37,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245974451] [2020-10-28 09:37:37,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:37:37,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:37,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:37:37,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:37:37,623 INFO L87 Difference]: Start difference. First operand 1085 states and 1258 transitions. Second operand 6 states. [2020-10-28 09:37:38,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:38,057 INFO L93 Difference]: Finished difference Result 2159 states and 2507 transitions. [2020-10-28 09:37:38,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:37:38,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-10-28 09:37:38,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:38,062 INFO L225 Difference]: With dead ends: 2159 [2020-10-28 09:37:38,062 INFO L226 Difference]: Without dead ends: 1193 [2020-10-28 09:37:38,065 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 09:37:38,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2020-10-28 09:37:38,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 820. [2020-10-28 09:37:38,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2020-10-28 09:37:38,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 942 transitions. [2020-10-28 09:37:38,124 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 942 transitions. Word has length 82 [2020-10-28 09:37:38,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:38,125 INFO L481 AbstractCegarLoop]: Abstraction has 820 states and 942 transitions. [2020-10-28 09:37:38,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:37:38,125 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 942 transitions. [2020-10-28 09:37:38,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 09:37:38,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:38,128 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 09:37:38,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 09:37:38,128 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:38,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:38,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1469812168, now seen corresponding path program 3 times [2020-10-28 09:37:38,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:38,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789030496] [2020-10-28 09:37:38,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 09:37:38,158 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 09:37:38,159 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 09:37:38,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 09:37:38,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:37:38 BoogieIcfgContainer [2020-10-28 09:37:38,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:37:38,204 INFO L168 Benchmark]: Toolchain (without parser) took 141622.72 ms. Allocated memory was 154.1 MB in the beginning and 859.8 MB in the end (delta: 705.7 MB). Free memory was 109.2 MB in the beginning and 671.1 MB in the end (delta: -561.9 MB). Peak memory consumption was 144.1 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:38,205 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 154.1 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:37:38,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.07 ms. Allocated memory is still 154.1 MB. Free memory was 108.6 MB in the beginning and 97.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:38,210 INFO L168 Benchmark]: Boogie Preprocessor took 90.57 ms. Allocated memory is still 154.1 MB. Free memory was 97.4 MB in the beginning and 136.1 MB in the end (delta: -38.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:38,211 INFO L168 Benchmark]: RCFGBuilder took 592.48 ms. Allocated memory is still 154.1 MB. Free memory was 136.1 MB in the beginning and 113.5 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:38,211 INFO L168 Benchmark]: TraceAbstraction took 140477.54 ms. Allocated memory was 154.1 MB in the beginning and 859.8 MB in the end (delta: 705.7 MB). Free memory was 113.1 MB in the beginning and 671.1 MB in the end (delta: -558.0 MB). Peak memory consumption was 148.5 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:38,219 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 154.1 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 439.07 ms. Allocated memory is still 154.1 MB. Free memory was 108.6 MB in the beginning and 97.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 90.57 ms. Allocated memory is still 154.1 MB. Free memory was 97.4 MB in the beginning and 136.1 MB in the end (delta: -38.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 592.48 ms. Allocated memory is still 154.1 MB. Free memory was 136.1 MB in the beginning and 113.5 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 140477.54 ms. Allocated memory was 154.1 MB in the beginning and 859.8 MB in the end (delta: 705.7 MB). Free memory was 113.1 MB in the beginning and 671.1 MB in the end (delta: -558.0 MB). Peak memory consumption was 148.5 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; [L118] b = __VERIFIER_nondet_uint() [L120] a = 234770789 [L122] 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 FALSE !(a3 == (unsigned char)0) [L60] nb = (unsigned char)4 [L61] COND TRUE b3 == (unsigned char)0 [L62] nb = nb - 1 [L63] COND TRUE b2 == (unsigned char)0 [L64] nb = nb - 1 [L65] COND TRUE b1 == (unsigned char)0 [L66] nb = nb - 1 [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 TRUE i < na [L76] COND FALSE !(i == (unsigned char)0) [L77] COND TRUE i == (unsigned char)1 [L77] partial_sum = partial_sum + a1 [L78] COND FALSE !(i == (unsigned char)2) [L79] COND FALSE !(i == (unsigned char)3) [L81] COND FALSE !(i < nb) [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 TRUE i < na [L76] COND FALSE !(i == (unsigned char)0) [L77] COND FALSE !(i == (unsigned char)1) [L78] COND TRUE i == (unsigned char)2 [L78] partial_sum = partial_sum + a2 [L79] COND FALSE !(i == (unsigned char)3) [L81] COND FALSE !(i < nb) [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 TRUE i < na [L76] COND FALSE !(i == (unsigned char)0) [L77] COND FALSE !(i == (unsigned char)1) [L78] COND FALSE !(i == (unsigned char)2) [L79] COND TRUE i == (unsigned char)3 [L79] partial_sum = partial_sum + a3 [L81] COND FALSE !(i < nb) [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; [L122] RET, EXPR mp_add(a, b) [L122] r = mp_add(a, b) [L124] CALL __VERIFIER_assert(r == a + b) [L16] COND TRUE !(cond) [L17] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "byte_add_1-1.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: 140.3s, OverallIterations: 20, TraceHistogramMax: 4, AutomataDifference: 20.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1198 SDtfs, 4767 SDslu, 418 SDs, 0 SdLazy, 7049 SolverSat, 613 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 322 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2967occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 19 MinimizatonAttempts, 4062 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 118.3s InterpolantComputationTime, 1003 NumberOfCodeBlocks, 1003 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 902 ConstructedInterpolants, 0 QuantifiedInterpolants, 339250 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 8 PerfectInterpolantSequences, 255/407 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...