/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:45:31,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:45:31,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:45:31,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:45:31,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:45:31,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:45:31,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:45:31,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:45:31,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:45:31,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:45:31,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:45:31,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:45:31,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:45:31,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:45:31,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:45:31,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:45:31,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:45:31,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:45:31,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:45:31,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:45:31,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:45:31,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:45:31,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:45:31,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:45:31,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:45:31,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:45:31,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:45:31,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:45:31,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:45:31,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:45:31,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:45:31,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:45:31,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:45:31,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:45:32,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:45:32,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:45:32,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:45:32,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:45:32,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:45:32,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:45:32,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:45:32,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:45:32,067 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:45:32,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:45:32,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:45:32,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:45:32,074 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:45:32,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:45:32,074 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:45:32,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:45:32,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:45:32,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:45:32,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:45:32,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:45:32,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:45:32,077 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:45:32,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:45:32,077 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:45:32,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:45:32,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:45:32,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:45:32,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:45:32,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:45:32,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:45:32,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:45:32,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:45:32,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:45:32,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:45:32,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:45:32,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:45:32,080 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:45:32,080 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:45:32,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:45:32,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:45:32,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:45:32,477 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:45:32,478 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:45:32,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label26.c [2020-10-29 07:45:32,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0621a7c31/a6502b9fd5c64b9888ce14d13ad85b66/FLAGa9885f780 [2020-10-29 07:45:33,434 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:45:33,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label26.c [2020-10-29 07:45:33,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0621a7c31/a6502b9fd5c64b9888ce14d13ad85b66/FLAGa9885f780 [2020-10-29 07:45:33,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0621a7c31/a6502b9fd5c64b9888ce14d13ad85b66 [2020-10-29 07:45:33,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:45:33,608 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:45:33,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:45:33,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:45:33,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:45:33,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:45:33" (1/1) ... [2020-10-29 07:45:33,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55aaacd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:33, skipping insertion in model container [2020-10-29 07:45:33,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:45:33" (1/1) ... [2020-10-29 07:45:33,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:45:33,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:45:34,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:45:34,499 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:45:34,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:45:34,841 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:45:34,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:34 WrapperNode [2020-10-29 07:45:34,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:45:34,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:45:34,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:45:34,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:45:34,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:34" (1/1) ... [2020-10-29 07:45:34,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:34" (1/1) ... [2020-10-29 07:45:34,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:34" (1/1) ... [2020-10-29 07:45:34,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:34" (1/1) ... [2020-10-29 07:45:35,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:34" (1/1) ... [2020-10-29 07:45:35,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:34" (1/1) ... [2020-10-29 07:45:35,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:34" (1/1) ... [2020-10-29 07:45:35,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:45:35,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:45:35,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:45:35,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:45:35,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:45:35,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:45:35,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:45:35,169 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:45:35,169 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:45:35,169 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:45:35,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:45:35,170 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:45:35,170 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:45:35,171 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:45:35,171 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:45:35,172 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:45:35,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:45:35,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:45:35,172 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:45:35,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:45:35,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:45:35,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:45:35,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:45:35,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:45:35,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:45:35,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:45:38,246 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:45:38,247 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:45:38,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:45:38 BoogieIcfgContainer [2020-10-29 07:45:38,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:45:38,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:45:38,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:45:38,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:45:38,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:45:33" (1/3) ... [2020-10-29 07:45:38,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329794d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:45:38, skipping insertion in model container [2020-10-29 07:45:38,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:45:34" (2/3) ... [2020-10-29 07:45:38,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329794d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:45:38, skipping insertion in model container [2020-10-29 07:45:38,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:45:38" (3/3) ... [2020-10-29 07:45:38,258 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label26.c [2020-10-29 07:45:38,271 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:45:38,276 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:45:38,289 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:45:38,319 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:45:38,320 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:45:38,320 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:45:38,320 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:45:38,320 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:45:38,320 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:45:38,320 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:45:38,320 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:45:38,347 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:45:38,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 07:45:38,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:38,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:45:38,358 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:38,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:38,364 INFO L82 PathProgramCache]: Analyzing trace with hash 2101893985, now seen corresponding path program 1 times [2020-10-29 07:45:38,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:38,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506464568] [2020-10-29 07:45:38,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:38,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:39,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:39,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:45:39,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:39,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-10-29 07:45:39,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:39,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:39,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:45:39,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:45:39,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 07:45:39,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-29 07:45:39,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:39,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:39,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:39,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:39,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:39,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 07:45:39,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:39,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:39,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:39,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:39,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:45:39,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:39,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:45:39,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506464568] [2020-10-29 07:45:39,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:45:39,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:45:39,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59993455] [2020-10-29 07:45:39,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:45:39,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:39,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:45:39,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:45:39,489 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:45:44,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:44,893 INFO L93 Difference]: Finished difference Result 1229 states and 2206 transitions. [2020-10-29 07:45:44,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:45:44,896 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-29 07:45:44,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:44,918 INFO L225 Difference]: With dead ends: 1229 [2020-10-29 07:45:44,918 INFO L226 Difference]: Without dead ends: 709 [2020-10-29 07:45:44,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:45:44,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-10-29 07:45:45,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 695. [2020-10-29 07:45:45,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-29 07:45:45,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1081 transitions. [2020-10-29 07:45:45,035 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1081 transitions. Word has length 60 [2020-10-29 07:45:45,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:45,036 INFO L481 AbstractCegarLoop]: Abstraction has 695 states and 1081 transitions. [2020-10-29 07:45:45,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:45:45,036 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1081 transitions. [2020-10-29 07:45:45,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 07:45:45,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:45,043 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:45:45,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:45:45,044 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:45,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:45,045 INFO L82 PathProgramCache]: Analyzing trace with hash -46364134, now seen corresponding path program 1 times [2020-10-29 07:45:45,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:45,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616501338] [2020-10-29 07:45:45,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:45,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:45,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:46,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:46,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:47,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:47,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 07:45:47,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:45:47,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1990 [2020-10-29 07:45:47,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:47,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:47,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:45:47,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:45:47,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 07:45:47,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:45:47,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:47,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:47,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:47,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:47,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:47,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:45:47,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:47,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:47,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:47,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:47,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:45:47,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:47,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:47,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:47,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:47,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:47,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 07:45:47,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:45:47,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-29 07:45:47,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:47,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:47,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:47,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:47,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 07:45:47,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:47,519 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:45:47,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616501338] [2020-10-29 07:45:47,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:47,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:45:47,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280402957] [2020-10-29 07:45:47,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:45:47,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:47,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:45:47,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:45:47,523 INFO L87 Difference]: Start difference. First operand 695 states and 1081 transitions. Second operand 5 states. [2020-10-29 07:45:52,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:52,844 INFO L93 Difference]: Finished difference Result 1697 states and 2715 transitions. [2020-10-29 07:45:52,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:45:52,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-29 07:45:52,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:52,858 INFO L225 Difference]: With dead ends: 1697 [2020-10-29 07:45:52,859 INFO L226 Difference]: Without dead ends: 1008 [2020-10-29 07:45:52,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:45:52,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2020-10-29 07:45:52,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 1006. [2020-10-29 07:45:52,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1006 states. [2020-10-29 07:45:52,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1363 transitions. [2020-10-29 07:45:52,924 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1363 transitions. Word has length 130 [2020-10-29 07:45:52,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:52,927 INFO L481 AbstractCegarLoop]: Abstraction has 1006 states and 1363 transitions. [2020-10-29 07:45:52,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:45:52,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1363 transitions. [2020-10-29 07:45:52,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-29 07:45:52,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:52,940 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:45:52,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:45:52,941 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:52,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:52,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1740907821, now seen corresponding path program 1 times [2020-10-29 07:45:52,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:52,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660905340] [2020-10-29 07:45:52,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:53,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:53,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:54,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:54,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 07:45:54,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:45:54,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1267 [2020-10-29 07:45:54,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:54,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:54,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:45:54,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:45:54,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 07:45:54,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:54,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:54,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:54,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:54,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:54,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:54,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:45:54,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:54,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:54,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:54,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:54,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:45:54,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:54,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:54,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:54,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:54,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:45:54,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:54,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 07:45:54,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:54,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:54,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:54,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:45:54,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:54,795 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:45:54,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660905340] [2020-10-29 07:45:54,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:45:54,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:45:54,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307929253] [2020-10-29 07:45:54,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:45:54,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:54,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:45:54,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:45:54,802 INFO L87 Difference]: Start difference. First operand 1006 states and 1363 transitions. Second operand 7 states. [2020-10-29 07:46:04,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:04,416 INFO L93 Difference]: Finished difference Result 2355 states and 3341 transitions. [2020-10-29 07:46:04,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:46:04,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2020-10-29 07:46:04,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:04,427 INFO L225 Difference]: With dead ends: 2355 [2020-10-29 07:46:04,427 INFO L226 Difference]: Without dead ends: 1662 [2020-10-29 07:46:04,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:46:04,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2020-10-29 07:46:04,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1325. [2020-10-29 07:46:04,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1325 states. [2020-10-29 07:46:04,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1715 transitions. [2020-10-29 07:46:04,476 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1715 transitions. Word has length 143 [2020-10-29 07:46:04,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:04,477 INFO L481 AbstractCegarLoop]: Abstraction has 1325 states and 1715 transitions. [2020-10-29 07:46:04,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:46:04,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1715 transitions. [2020-10-29 07:46:04,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-29 07:46:04,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:04,481 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:46:04,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:46:04,482 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:04,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:04,482 INFO L82 PathProgramCache]: Analyzing trace with hash 912649175, now seen corresponding path program 1 times [2020-10-29 07:46:04,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:04,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134171216] [2020-10-29 07:46:04,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:04,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:04,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:05,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:07,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:07,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-29 07:46:07,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:46:07,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3340 [2020-10-29 07:46:07,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:07,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:46:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:46:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:46:07,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:08,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:08,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:08,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:08,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:08,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:08,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:46:08,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:08,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:08,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:08,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:08,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:46:08,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:08,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:08,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:08,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:08,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:46:08,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:08,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-29 07:46:08,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:08,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:08,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:08,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:46:08,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:46:09,047 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:46:09,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134171216] [2020-10-29 07:46:09,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:46:09,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 07:46:09,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470695552] [2020-10-29 07:46:09,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:46:09,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:09,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:46:09,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:46:09,056 INFO L87 Difference]: Start difference. First operand 1325 states and 1715 transitions. Second operand 8 states. [2020-10-29 07:46:19,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:19,507 INFO L93 Difference]: Finished difference Result 2979 states and 3781 transitions. [2020-10-29 07:46:19,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:46:19,508 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 260 [2020-10-29 07:46:19,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:19,517 INFO L225 Difference]: With dead ends: 2979 [2020-10-29 07:46:19,518 INFO L226 Difference]: Without dead ends: 1660 [2020-10-29 07:46:19,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:46:19,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2020-10-29 07:46:19,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1636. [2020-10-29 07:46:19,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1636 states. [2020-10-29 07:46:19,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2036 transitions. [2020-10-29 07:46:19,570 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2036 transitions. Word has length 260 [2020-10-29 07:46:19,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:19,571 INFO L481 AbstractCegarLoop]: Abstraction has 1636 states and 2036 transitions. [2020-10-29 07:46:19,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:46:19,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2036 transitions. [2020-10-29 07:46:19,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-29 07:46:19,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:19,577 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:46:19,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:46:19,578 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:19,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:19,578 INFO L82 PathProgramCache]: Analyzing trace with hash 356585454, now seen corresponding path program 1 times [2020-10-29 07:46:19,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:19,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965810774] [2020-10-29 07:46:19,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:19,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:19,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:21,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:21,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-29 07:46:21,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:46:21,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1811 [2020-10-29 07:46:21,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:21,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:21,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:46:21,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:46:21,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 337 [2020-10-29 07:46:21,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:21,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:21,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:21,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:21,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:21,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:21,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:46:21,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:21,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:21,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:21,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:21,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:46:21,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:21,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:21,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:22,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:22,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:46:22,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:22,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-10-29 07:46:22,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:22,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:22,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:22,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:22,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-29 07:46:22,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:46:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:46:22,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965810774] [2020-10-29 07:46:22,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:22,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:46:22,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344093489] [2020-10-29 07:46:22,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:46:22,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:22,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:46:22,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:46:22,761 INFO L87 Difference]: Start difference. First operand 1636 states and 2036 transitions. Second operand 6 states. [2020-10-29 07:46:30,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:30,838 INFO L93 Difference]: Finished difference Result 3298 states and 4389 transitions. [2020-10-29 07:46:30,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:46:30,842 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 334 [2020-10-29 07:46:30,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:30,853 INFO L225 Difference]: With dead ends: 3298 [2020-10-29 07:46:30,853 INFO L226 Difference]: Without dead ends: 2602 [2020-10-29 07:46:30,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:46:30,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2020-10-29 07:46:30,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2592. [2020-10-29 07:46:30,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2592 states. [2020-10-29 07:46:30,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 3129 transitions. [2020-10-29 07:46:30,944 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 3129 transitions. Word has length 334 [2020-10-29 07:46:30,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:30,944 INFO L481 AbstractCegarLoop]: Abstraction has 2592 states and 3129 transitions. [2020-10-29 07:46:30,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:46:30,945 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 3129 transitions. [2020-10-29 07:46:30,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-29 07:46:30,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:30,952 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:46:30,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:46:30,952 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:30,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:30,953 INFO L82 PathProgramCache]: Analyzing trace with hash -983270742, now seen corresponding path program 1 times [2020-10-29 07:46:30,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:30,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157096697] [2020-10-29 07:46:30,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:31,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:31,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:31,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:31,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:34,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:36,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:36,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-29 07:46:36,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:46:36,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 07:46:36,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:36,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:36,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:46:36,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:46:36,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 260 [2020-10-29 07:46:36,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:36,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:36,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:36,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:36,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:36,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:36,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:46:36,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:36,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:36,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:46:36,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:36,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:36,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:36,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:46:36,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:36,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 07:46:36,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:36,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:36,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:36,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:36,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:46:36,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:36,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:46:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:36,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:36,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:36,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:36,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:46:36,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:46:36,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-29 07:46:36,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:36,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:46:36,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:37,297 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 142 proven. 52 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:46:37,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157096697] [2020-10-29 07:46:37,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:37,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:46:37,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673980064] [2020-10-29 07:46:37,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:46:37,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:37,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:46:37,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:46:37,303 INFO L87 Difference]: Start difference. First operand 2592 states and 3129 transitions. Second operand 7 states. [2020-10-29 07:46:46,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:46,510 INFO L93 Difference]: Finished difference Result 5550 states and 6954 transitions. [2020-10-29 07:46:46,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:46:46,516 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 355 [2020-10-29 07:46:46,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:46,533 INFO L225 Difference]: With dead ends: 5550 [2020-10-29 07:46:46,534 INFO L226 Difference]: Without dead ends: 3268 [2020-10-29 07:46:46,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:46:46,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2020-10-29 07:46:46,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 3234. [2020-10-29 07:46:46,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3234 states. [2020-10-29 07:46:46,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 3806 transitions. [2020-10-29 07:46:46,648 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 3806 transitions. Word has length 355 [2020-10-29 07:46:46,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:46,648 INFO L481 AbstractCegarLoop]: Abstraction has 3234 states and 3806 transitions. [2020-10-29 07:46:46,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:46:46,648 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 3806 transitions. [2020-10-29 07:46:46,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-29 07:46:46,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:46,657 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:46:46,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:46:46,658 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:46,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:46,660 INFO L82 PathProgramCache]: Analyzing trace with hash -224812702, now seen corresponding path program 1 times [2020-10-29 07:46:46,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:46,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208532509] [2020-10-29 07:46:46,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:46,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:47,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:48,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:48,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-29 07:46:48,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:46:48,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1963 [2020-10-29 07:46:48,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:48,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:46:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:46:48,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:48,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:48,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:48,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:48,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:48,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:48,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:46:48,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:48,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:48,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:48,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:49,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:49,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:49,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:46:49,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:49,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 07:46:49,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:49,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:49,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:49,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:49,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:46:49,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:49,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:46:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:49,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:49,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:49,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:46:49,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:49,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 07:46:49,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:49,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:49,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:49,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:49,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:46:49,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:49,633 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:46:49,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208532509] [2020-10-29 07:46:49,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:49,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:46:49,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180853734] [2020-10-29 07:46:49,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:46:49,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:49,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:46:49,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:46:49,638 INFO L87 Difference]: Start difference. First operand 3234 states and 3806 transitions. Second operand 7 states. [2020-10-29 07:47:01,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:01,856 INFO L93 Difference]: Finished difference Result 7825 states and 9530 transitions. [2020-10-29 07:47:01,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:47:01,857 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 419 [2020-10-29 07:47:01,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:01,877 INFO L225 Difference]: With dead ends: 7825 [2020-10-29 07:47:01,877 INFO L226 Difference]: Without dead ends: 4904 [2020-10-29 07:47:01,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:47:01,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4904 states. [2020-10-29 07:47:01,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4904 to 4851. [2020-10-29 07:47:01,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4851 states. [2020-10-29 07:47:01,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 5592 transitions. [2020-10-29 07:47:01,996 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 5592 transitions. Word has length 419 [2020-10-29 07:47:01,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:01,997 INFO L481 AbstractCegarLoop]: Abstraction has 4851 states and 5592 transitions. [2020-10-29 07:47:01,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:47:01,997 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 5592 transitions. [2020-10-29 07:47:02,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-10-29 07:47:02,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:02,009 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:47:02,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:47:02,009 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:02,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:02,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1498994720, now seen corresponding path program 1 times [2020-10-29 07:47:02,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:02,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699367663] [2020-10-29 07:47:02,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:02,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:02,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:04,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:04,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 459 [2020-10-29 07:47:04,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:47:04,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2348 [2020-10-29 07:47:04,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:04,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:04,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:47:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:47:04,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:04,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:04,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:04,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:04,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:04,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:04,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:47:04,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:04,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:04,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:04,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:04,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:04,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:04,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:04,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:05,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:05,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:47:05,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:05,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-29 07:47:05,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:05,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:05,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:05,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:05,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:47:05,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:05,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:47:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:05,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:05,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:05,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:47:05,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:05,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-29 07:47:05,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:05,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:47:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:47:05,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:05,908 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 212 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:47:05,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699367663] [2020-10-29 07:47:05,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:47:05,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:47:05,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601456710] [2020-10-29 07:47:05,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:47:05,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:05,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:47:05,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:47:05,911 INFO L87 Difference]: Start difference. First operand 4851 states and 5592 transitions. Second operand 7 states. [2020-10-29 07:47:20,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:20,525 INFO L93 Difference]: Finished difference Result 11697 states and 13523 transitions. [2020-10-29 07:47:20,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:47:20,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 445 [2020-10-29 07:47:20,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:20,556 INFO L225 Difference]: With dead ends: 11697 [2020-10-29 07:47:20,556 INFO L226 Difference]: Without dead ends: 7159 [2020-10-29 07:47:20,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:47:20,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7159 states. [2020-10-29 07:47:20,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7159 to 6788. [2020-10-29 07:47:20,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6788 states. [2020-10-29 07:47:20,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6788 states to 6788 states and 7716 transitions. [2020-10-29 07:47:20,730 INFO L78 Accepts]: Start accepts. Automaton has 6788 states and 7716 transitions. Word has length 445 [2020-10-29 07:47:20,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:20,731 INFO L481 AbstractCegarLoop]: Abstraction has 6788 states and 7716 transitions. [2020-10-29 07:47:20,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:47:20,731 INFO L276 IsEmpty]: Start isEmpty. Operand 6788 states and 7716 transitions. [2020-10-29 07:47:20,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-10-29 07:47:20,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:20,737 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:47:20,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:47:20,737 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:20,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:20,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1662177624, now seen corresponding path program 1 times [2020-10-29 07:47:20,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:20,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513713172] [2020-10-29 07:47:20,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:20,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:21,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:21,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 471 [2020-10-29 07:47:21,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:21,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 597 [2020-10-29 07:47:21,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:21,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:21,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:21,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:47:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 07:47:21,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:21,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:21,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:21,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:21,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:21,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:21,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:47:21,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:21,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:21,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:21,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:21,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:21,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:21,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:21,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:21,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:21,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:47:21,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:21,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 07:47:21,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:21,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:21,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:21,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:21,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:21,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:21,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:47:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:21,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:21,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:21,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:47:21,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:21,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 07:47:21,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:21,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:21,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:21,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:21,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:47:21,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-29 07:47:22,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513713172] [2020-10-29 07:47:22,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:47:22,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:47:22,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985364212] [2020-10-29 07:47:22,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:47:22,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:22,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:47:22,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:47:22,174 INFO L87 Difference]: Start difference. First operand 6788 states and 7716 transitions. Second operand 5 states. [2020-10-29 07:47:29,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:29,973 INFO L93 Difference]: Finished difference Result 14839 states and 17350 transitions. [2020-10-29 07:47:29,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:47:29,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 457 [2020-10-29 07:47:29,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:30,007 INFO L225 Difference]: With dead ends: 14839 [2020-10-29 07:47:30,007 INFO L226 Difference]: Without dead ends: 8364 [2020-10-29 07:47:30,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:47:30,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8364 states. [2020-10-29 07:47:30,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8364 to 8357. [2020-10-29 07:47:30,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8357 states. [2020-10-29 07:47:30,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8357 states to 8357 states and 9485 transitions. [2020-10-29 07:47:30,196 INFO L78 Accepts]: Start accepts. Automaton has 8357 states and 9485 transitions. Word has length 457 [2020-10-29 07:47:30,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:30,197 INFO L481 AbstractCegarLoop]: Abstraction has 8357 states and 9485 transitions. [2020-10-29 07:47:30,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:47:30,197 INFO L276 IsEmpty]: Start isEmpty. Operand 8357 states and 9485 transitions. [2020-10-29 07:47:30,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2020-10-29 07:47:30,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:30,206 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:47:30,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:47:30,206 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:30,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:30,207 INFO L82 PathProgramCache]: Analyzing trace with hash -60415380, now seen corresponding path program 1 times [2020-10-29 07:47:30,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:30,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087712846] [2020-10-29 07:47:30,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:30,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:30,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:30,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:31,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:33,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:35,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:35,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 564 [2020-10-29 07:47:35,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:47:35,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 07:47:35,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:35,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:35,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:47:35,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:47:35,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 07:47:35,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:35,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:35,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:35,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:35,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:35,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:35,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:47:35,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:35,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:35,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:35,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:35,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:35,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:35,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:35,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:35,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:35,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:47:35,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:35,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 07:47:35,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:35,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:35,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:35,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:35,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:35,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:35,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:47:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:35,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:35,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:35,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:47:35,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:35,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 07:47:35,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:35,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:35,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:35,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:35,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:47:35,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:35,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:47:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:35,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:36,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:36,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 07:47:36,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:36,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 07:47:36,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:36,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:36,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:36,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:47:36,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 07:47:36,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:36,406 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 278 proven. 53 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-29 07:47:36,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087712846] [2020-10-29 07:47:36,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:47:36,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:47:36,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817783742] [2020-10-29 07:47:36,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:47:36,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:36,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:47:36,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:47:36,408 INFO L87 Difference]: Start difference. First operand 8357 states and 9485 transitions. Second operand 6 states. [2020-10-29 07:47:46,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:46,800 INFO L93 Difference]: Finished difference Result 16267 states and 19233 transitions. [2020-10-29 07:47:46,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:47:46,802 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 548 [2020-10-29 07:47:46,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:46,832 INFO L225 Difference]: With dead ends: 16267 [2020-10-29 07:47:46,832 INFO L226 Difference]: Without dead ends: 11022 [2020-10-29 07:47:46,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:47:46,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11022 states. [2020-10-29 07:47:47,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11022 to 10992. [2020-10-29 07:47:47,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10992 states. [2020-10-29 07:47:47,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10992 states to 10992 states and 12833 transitions. [2020-10-29 07:47:47,066 INFO L78 Accepts]: Start accepts. Automaton has 10992 states and 12833 transitions. Word has length 548 [2020-10-29 07:47:47,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:47,067 INFO L481 AbstractCegarLoop]: Abstraction has 10992 states and 12833 transitions. [2020-10-29 07:47:47,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:47:47,068 INFO L276 IsEmpty]: Start isEmpty. Operand 10992 states and 12833 transitions. [2020-10-29 07:47:47,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2020-10-29 07:47:47,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:47,077 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:47:47,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:47:47,077 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:47,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:47,078 INFO L82 PathProgramCache]: Analyzing trace with hash 415020746, now seen corresponding path program 1 times [2020-10-29 07:47:47,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:47,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951705945] [2020-10-29 07:47:47,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:47,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:47,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:49,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:50,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:50,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 574 [2020-10-29 07:47:50,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:47:50,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3646 [2020-10-29 07:47:50,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:50,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:50,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:50,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:47:50,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:47:50,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:51,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:51,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:51,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:51,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:51,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:51,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:47:51,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:51,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:51,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:51,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:51,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:51,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:51,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:51,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:51,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:51,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:47:51,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:51,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 07:47:51,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:51,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:51,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:51,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:51,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:51,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:51,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:47:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:51,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:51,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:51,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:47:51,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:51,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 07:47:51,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:51,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:51,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:51,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:51,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:47:51,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:51,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:47:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:51,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:51,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:51,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 07:47:51,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:51,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 07:47:51,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:51,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:47:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 07:47:51,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:51,808 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 357 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:47:51,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951705945] [2020-10-29 07:47:51,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:47:51,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:47:51,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598846948] [2020-10-29 07:47:51,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:47:51,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:51,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:47:51,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:47:51,814 INFO L87 Difference]: Start difference. First operand 10992 states and 12833 transitions. Second operand 7 states. [2020-10-29 07:47:55,353 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 07:48:07,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:07,750 INFO L93 Difference]: Finished difference Result 21546 states and 26987 transitions. [2020-10-29 07:48:07,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:48:07,752 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 558 [2020-10-29 07:48:07,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:07,798 INFO L225 Difference]: With dead ends: 21546 [2020-10-29 07:48:07,799 INFO L226 Difference]: Without dead ends: 13666 [2020-10-29 07:48:07,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:48:07,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13666 states. [2020-10-29 07:48:08,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13666 to 13569. [2020-10-29 07:48:08,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13569 states. [2020-10-29 07:48:08,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13569 states to 13569 states and 16164 transitions. [2020-10-29 07:48:08,264 INFO L78 Accepts]: Start accepts. Automaton has 13569 states and 16164 transitions. Word has length 558 [2020-10-29 07:48:08,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:08,265 INFO L481 AbstractCegarLoop]: Abstraction has 13569 states and 16164 transitions. [2020-10-29 07:48:08,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:48:08,265 INFO L276 IsEmpty]: Start isEmpty. Operand 13569 states and 16164 transitions. [2020-10-29 07:48:08,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2020-10-29 07:48:08,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:08,278 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:48:08,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:48:08,278 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:08,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:08,281 INFO L82 PathProgramCache]: Analyzing trace with hash -91298436, now seen corresponding path program 1 times [2020-10-29 07:48:08,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:08,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912105118] [2020-10-29 07:48:08,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:08,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:08,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:09,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:09,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:10,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:11,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:13,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:13,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 597 [2020-10-29 07:48:13,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:48:13,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 07:48:13,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:13,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:13,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 07:48:13,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:48:13,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 588 [2020-10-29 07:48:13,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:13,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:13,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:13,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:13,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:13,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:13,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:48:13,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:13,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:13,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:13,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:13,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:48:13,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:13,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:13,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:14,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:14,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:48:14,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:14,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-29 07:48:14,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:14,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:48:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-29 07:48:14,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:14,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-29 07:48:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:14,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:14,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:14,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:14,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:48:14,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:48:14,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-29 07:48:14,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:14,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:14,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:14,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:14,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-29 07:48:14,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:15,312 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 6 proven. 100 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2020-10-29 07:48:15,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912105118] [2020-10-29 07:48:15,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:48:15,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:48:15,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582307900] [2020-10-29 07:48:15,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 07:48:15,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:15,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 07:48:15,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 07:48:15,314 INFO L87 Difference]: Start difference. First operand 13569 states and 16164 transitions. Second operand 9 states. [2020-10-29 07:48:25,631 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 07:48:35,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:35,729 INFO L93 Difference]: Finished difference Result 30374 states and 36943 transitions. [2020-10-29 07:48:35,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 07:48:35,731 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 583 [2020-10-29 07:48:35,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:35,788 INFO L225 Difference]: With dead ends: 30374 [2020-10-29 07:48:35,788 INFO L226 Difference]: Without dead ends: 18046 [2020-10-29 07:48:35,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-29 07:48:35,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18046 states. [2020-10-29 07:48:36,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18046 to 17043. [2020-10-29 07:48:36,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17043 states. [2020-10-29 07:48:36,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17043 states to 17043 states and 20691 transitions. [2020-10-29 07:48:36,184 INFO L78 Accepts]: Start accepts. Automaton has 17043 states and 20691 transitions. Word has length 583 [2020-10-29 07:48:36,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:36,185 INFO L481 AbstractCegarLoop]: Abstraction has 17043 states and 20691 transitions. [2020-10-29 07:48:36,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 07:48:36,185 INFO L276 IsEmpty]: Start isEmpty. Operand 17043 states and 20691 transitions. [2020-10-29 07:48:36,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2020-10-29 07:48:36,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:36,195 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:48:36,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:48:36,195 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:36,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:36,196 INFO L82 PathProgramCache]: Analyzing trace with hash 899428986, now seen corresponding path program 1 times [2020-10-29 07:48:36,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:36,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154811974] [2020-10-29 07:48:36,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:36,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:36,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:38,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:40,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:40,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 601 [2020-10-29 07:48:40,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:48:40,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3669 [2020-10-29 07:48:40,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:40,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:40,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:40,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:48:40,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 07:48:40,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:40,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:40,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:40,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:40,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:40,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:40,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:48:40,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:40,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:40,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:40,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:40,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:40,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:40,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:40,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:40,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:48:40,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:40,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 07:48:40,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:40,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:40,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:40,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:40,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:40,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:40,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:48:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:40,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:40,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:40,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:48:40,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:40,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 07:48:40,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:40,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:40,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:40,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:40,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:48:40,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:40,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:48:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:40,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:40,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:40,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 07:48:40,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:40,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-29 07:48:40,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:40,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:40,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:40,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:40,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:48:40,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:41,106 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 394 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:48:41,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154811974] [2020-10-29 07:48:41,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:48:41,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:48:41,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993214149] [2020-10-29 07:48:41,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:48:41,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:41,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:48:41,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:48:41,108 INFO L87 Difference]: Start difference. First operand 17043 states and 20691 transitions. Second operand 7 states. [2020-10-29 07:48:54,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:54,409 INFO L93 Difference]: Finished difference Result 37789 states and 47797 transitions. [2020-10-29 07:48:54,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:48:54,412 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 585 [2020-10-29 07:48:54,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:54,473 INFO L225 Difference]: With dead ends: 37789 [2020-10-29 07:48:54,473 INFO L226 Difference]: Without dead ends: 23856 [2020-10-29 07:48:54,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:48:54,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23856 states. [2020-10-29 07:48:54,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23856 to 23234. [2020-10-29 07:48:54,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23234 states. [2020-10-29 07:48:54,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23234 states to 23234 states and 28812 transitions. [2020-10-29 07:48:54,953 INFO L78 Accepts]: Start accepts. Automaton has 23234 states and 28812 transitions. Word has length 585 [2020-10-29 07:48:54,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:54,954 INFO L481 AbstractCegarLoop]: Abstraction has 23234 states and 28812 transitions. [2020-10-29 07:48:54,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:48:54,954 INFO L276 IsEmpty]: Start isEmpty. Operand 23234 states and 28812 transitions. [2020-10-29 07:48:54,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2020-10-29 07:48:54,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:54,965 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:48:54,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:48:54,965 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:54,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:54,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1241886357, now seen corresponding path program 1 times [2020-10-29 07:48:54,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:54,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652324171] [2020-10-29 07:48:54,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:55,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:55,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:57,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:59,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:59,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 638 [2020-10-29 07:48:59,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:48:59,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4542 [2020-10-29 07:48:59,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:59,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:59,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:48:59,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:48:59,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:48:59,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:59,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:59,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:59,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:59,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:59,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:59,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:48:59,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:59,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:59,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:59,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:59,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:59,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:59,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:59,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:00,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:00,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:49:00,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:00,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 07:49:00,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:00,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:49:00,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:00,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:49:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:00,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:00,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:00,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:49:00,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:00,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-29 07:49:00,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:00,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:00,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:49:00,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:00,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:49:00,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:00,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:49:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:00,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:00,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:00,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 07:49:00,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:00,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 07:49:00,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:00,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:00,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:00,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:00,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-29 07:49:00,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 430 proven. 110 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:49:01,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652324171] [2020-10-29 07:49:01,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:49:01,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:49:01,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771703758] [2020-10-29 07:49:01,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:49:01,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:01,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:49:01,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:49:01,375 INFO L87 Difference]: Start difference. First operand 23234 states and 28812 transitions. Second operand 10 states. [2020-10-29 07:49:08,244 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-10-29 07:49:09,477 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68