/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/Problem18_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:40:54,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:40:54,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:40:55,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:40:55,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:40:55,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:40:55,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:40:55,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:40:55,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:40:55,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:40:55,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:40:55,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:40:55,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:40:55,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:40:55,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:40:55,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:40:55,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:40:55,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:40:55,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:40:55,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:40:55,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:40:55,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:40:55,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:40:55,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:40:55,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:40:55,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:40:55,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:40:55,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:40:55,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:40:55,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:40:55,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:40:55,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:40:55,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:40:55,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:40:55,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:40:55,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:40:55,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:40:55,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:40:55,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:40:55,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:40:55,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:40:55,113 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:40:55,141 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:40:55,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:40:55,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:40:55,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:40:55,144 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:40:55,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:40:55,144 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:40:55,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:40:55,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:40:55,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:40:55,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:40:55,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:40:55,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:40:55,146 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:40:55,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:40:55,147 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:40:55,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:40:55,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:40:55,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:40:55,148 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:40:55,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:40:55,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:40:55,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:40:55,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:40:55,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:40:55,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:40:55,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:40:55,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:40:55,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:40:55,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:40:55,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:40:55,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:40:55,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:40:55,626 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:40:55,627 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:40:55,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label56.c [2020-10-29 08:40:55,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ddbce0ea/aeff2b80776745518db54479240419de/FLAG52a0bf3e8 [2020-10-29 08:40:56,739 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:40:56,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label56.c [2020-10-29 08:40:56,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ddbce0ea/aeff2b80776745518db54479240419de/FLAG52a0bf3e8 [2020-10-29 08:40:57,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ddbce0ea/aeff2b80776745518db54479240419de [2020-10-29 08:40:57,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:40:57,270 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:40:57,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:40:57,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:40:57,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:40:57,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:40:57" (1/1) ... [2020-10-29 08:40:57,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@369b2974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:40:57, skipping insertion in model container [2020-10-29 08:40:57,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:40:57" (1/1) ... [2020-10-29 08:40:57,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:40:57,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:40:58,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:40:58,608 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:40:59,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:40:59,177 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:40:59,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:40:59 WrapperNode [2020-10-29 08:40:59,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:40:59,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:40:59,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:40:59,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:40:59,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:40:59" (1/1) ... [2020-10-29 08:40:59,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:40:59" (1/1) ... [2020-10-29 08:40:59,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:40:59" (1/1) ... [2020-10-29 08:40:59,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:40:59" (1/1) ... [2020-10-29 08:40:59,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:40:59" (1/1) ... [2020-10-29 08:40:59,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:40:59" (1/1) ... [2020-10-29 08:40:59,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:40:59" (1/1) ... [2020-10-29 08:40:59,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:40:59,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:40:59,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:40:59,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:40:59,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:40:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:40:59,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:40:59,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:40:59,598 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:40:59,599 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:40:59,599 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:40:59,599 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:40:59,599 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:40:59,599 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:40:59,600 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:40:59,600 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:40:59,601 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:40:59,601 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:40:59,601 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:40:59,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:40:59,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:40:59,602 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:40:59,602 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:40:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:40:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:40:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:40:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:40:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:40:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:41:04,069 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:41:04,069 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:41:04,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:41:04 BoogieIcfgContainer [2020-10-29 08:41:04,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:41:04,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:41:04,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:41:04,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:41:04,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:40:57" (1/3) ... [2020-10-29 08:41:04,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1314a12c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:41:04, skipping insertion in model container [2020-10-29 08:41:04,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:40:59" (2/3) ... [2020-10-29 08:41:04,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1314a12c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:41:04, skipping insertion in model container [2020-10-29 08:41:04,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:41:04" (3/3) ... [2020-10-29 08:41:04,087 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label56.c [2020-10-29 08:41:04,100 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:41:04,106 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:41:04,121 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:41:04,170 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:41:04,170 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:41:04,170 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:41:04,170 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:41:04,171 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:41:04,171 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:41:04,171 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:41:04,171 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:41:04,211 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-29 08:41:04,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 08:41:04,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:41:04,224 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] [2020-10-29 08:41:04,225 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:41:04,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:41:04,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1502869208, now seen corresponding path program 1 times [2020-10-29 08:41:04,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:41:04,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022059246] [2020-10-29 08:41:04,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:41:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:04,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:04,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:04,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 08:41:04,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:04,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-10-29 08:41:04,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:04,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:41:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:41:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 08:41:04,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:41:05,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:41:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:05,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:05,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:05,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:41:05,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:05,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 08:41:05,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:05,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:05,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:41:05,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:41:05,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:41:05,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:05,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:41:05,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022059246] [2020-10-29 08:41:05,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:41:05,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:41:05,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91854956] [2020-10-29 08:41:05,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:41:05,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:41:05,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:41:05,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:41:05,363 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-29 08:41:24,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:41:24,454 INFO L93 Difference]: Finished difference Result 2989 states and 5775 transitions. [2020-10-29 08:41:24,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:41:24,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-29 08:41:24,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:41:24,491 INFO L225 Difference]: With dead ends: 2989 [2020-10-29 08:41:24,491 INFO L226 Difference]: Without dead ends: 2143 [2020-10-29 08:41:24,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:41:24,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-29 08:41:24,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-29 08:41:24,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-29 08:41:24,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3572 transitions. [2020-10-29 08:41:24,711 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3572 transitions. Word has length 55 [2020-10-29 08:41:24,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:41:24,713 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3572 transitions. [2020-10-29 08:41:24,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:41:24,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3572 transitions. [2020-10-29 08:41:24,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-29 08:41:24,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:41:24,729 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:41:24,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:41:24,730 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:41:24,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:41:24,732 INFO L82 PathProgramCache]: Analyzing trace with hash 277278229, now seen corresponding path program 1 times [2020-10-29 08:41:24,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:41:24,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912861783] [2020-10-29 08:41:24,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:41:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:24,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:25,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:25,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:26,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:26,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 08:41:26,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:41:26,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1837 [2020-10-29 08:41:26,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:26,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:26,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:41:26,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:41:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 08:41:26,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 08:41:26,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:41:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:26,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:26,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:26,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:41:26,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:26,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:41:26,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:26,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:26,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:41:26,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:41:26,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:41:26,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-29 08:41:26,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:41:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:26,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:27,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:27,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 08:41:27,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:27,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-29 08:41:27,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:27,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:41:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:41:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 08:41:27,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:41:27,320 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:41:27,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912861783] [2020-10-29 08:41:27,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:41:27,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:41:27,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118622573] [2020-10-29 08:41:27,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:41:27,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:41:27,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:41:27,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:41:27,327 INFO L87 Difference]: Start difference. First operand 2136 states and 3572 transitions. Second operand 7 states. [2020-10-29 08:41:40,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:41:40,951 INFO L93 Difference]: Finished difference Result 6460 states and 10878 transitions. [2020-10-29 08:41:40,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:41:40,956 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2020-10-29 08:41:40,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:41:40,990 INFO L225 Difference]: With dead ends: 6460 [2020-10-29 08:41:40,991 INFO L226 Difference]: Without dead ends: 4330 [2020-10-29 08:41:41,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:41:41,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4330 states. [2020-10-29 08:41:41,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4330 to 4300. [2020-10-29 08:41:41,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4300 states. [2020-10-29 08:41:41,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 6133 transitions. [2020-10-29 08:41:41,167 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 6133 transitions. Word has length 143 [2020-10-29 08:41:41,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:41:41,170 INFO L481 AbstractCegarLoop]: Abstraction has 4300 states and 6133 transitions. [2020-10-29 08:41:41,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:41:41,171 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 6133 transitions. [2020-10-29 08:41:41,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-29 08:41:41,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:41:41,186 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, 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 08:41:41,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:41:41,186 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:41:41,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:41:41,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1898681062, now seen corresponding path program 1 times [2020-10-29 08:41:41,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:41:41,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402219125] [2020-10-29 08:41:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:41:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:41,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:41,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:41,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:43,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:45,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:45,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-29 08:41:45,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:41:45,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4368 [2020-10-29 08:41:45,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:45,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:45,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:41:45,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 08:41:45,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 08:41:45,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:41:45,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:41:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:45,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:45,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:45,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:41:45,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:45,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:41:45,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:45,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:45,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:41:45,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:41:45,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:41:45,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:41:45,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:41:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:45,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:45,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:45,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:41:45,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:45,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 08:41:45,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:45,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:45,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:41:45,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:41:45,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 08:41:45,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:41:45,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 08:41:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:45,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:46,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:46,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 08:41:46,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:46,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 08:41:46,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:46,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:46,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:41:46,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:41:46,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 08:41:46,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:41:46,196 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:41:46,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402219125] [2020-10-29 08:41:46,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:41:46,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:41:46,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191417723] [2020-10-29 08:41:46,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:41:46,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:41:46,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:41:46,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:41:46,208 INFO L87 Difference]: Start difference. First operand 4300 states and 6133 transitions. Second operand 7 states. [2020-10-29 08:42:01,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:42:01,070 INFO L93 Difference]: Finished difference Result 10801 states and 16124 transitions. [2020-10-29 08:42:01,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:42:01,072 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-10-29 08:42:01,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:42:01,118 INFO L225 Difference]: With dead ends: 10801 [2020-10-29 08:42:01,118 INFO L226 Difference]: Without dead ends: 6507 [2020-10-29 08:42:01,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:42:01,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6507 states. [2020-10-29 08:42:01,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6507 to 6493. [2020-10-29 08:42:01,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6493 states. [2020-10-29 08:42:01,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6493 states to 6493 states and 9493 transitions. [2020-10-29 08:42:01,366 INFO L78 Accepts]: Start accepts. Automaton has 6493 states and 9493 transitions. Word has length 214 [2020-10-29 08:42:01,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:42:01,368 INFO L481 AbstractCegarLoop]: Abstraction has 6493 states and 9493 transitions. [2020-10-29 08:42:01,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:42:01,369 INFO L276 IsEmpty]: Start isEmpty. Operand 6493 states and 9493 transitions. [2020-10-29 08:42:01,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-29 08:42:01,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:42:01,383 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, 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] [2020-10-29 08:42:01,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:42:01,383 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:42:01,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:42:01,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1592428472, now seen corresponding path program 1 times [2020-10-29 08:42:01,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:42:01,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890519984] [2020-10-29 08:42:01,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:42:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:01,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:01,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:01,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:03,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:06,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:06,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:06,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 08:42:06,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:42:06,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 08:42:06,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:06,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:06,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:42:06,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 08:42:06,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 08:42:06,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:42:06,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:42:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:06,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:06,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:06,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:42:06,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:06,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:42:06,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:06,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:06,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:42:06,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:42:06,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:42:06,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:42:06,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:42:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:06,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:06,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:06,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:42:06,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:06,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 08:42:06,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:06,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:06,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:42:06,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:42:06,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 08:42:06,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:42:06,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 08:42:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:06,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:07,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:07,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 08:42:07,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:07,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-29 08:42:07,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:07,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:07,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:42:07,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:42:07,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-29 08:42:07,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:42:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:42:07,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890519984] [2020-10-29 08:42:07,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:42:07,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:42:07,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141283217] [2020-10-29 08:42:07,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:42:07,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:42:07,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:42:07,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:42:07,231 INFO L87 Difference]: Start difference. First operand 6493 states and 9493 transitions. Second operand 7 states. [2020-10-29 08:42:23,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:42:23,280 INFO L93 Difference]: Finished difference Result 13187 states and 19630 transitions. [2020-10-29 08:42:23,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:42:23,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 261 [2020-10-29 08:42:23,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:42:23,323 INFO L225 Difference]: With dead ends: 13187 [2020-10-29 08:42:23,323 INFO L226 Difference]: Without dead ends: 6700 [2020-10-29 08:42:23,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:42:23,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6700 states. [2020-10-29 08:42:23,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6700 to 6587. [2020-10-29 08:42:23,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6587 states. [2020-10-29 08:42:23,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6587 states to 6587 states and 9003 transitions. [2020-10-29 08:42:23,590 INFO L78 Accepts]: Start accepts. Automaton has 6587 states and 9003 transitions. Word has length 261 [2020-10-29 08:42:23,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:42:23,591 INFO L481 AbstractCegarLoop]: Abstraction has 6587 states and 9003 transitions. [2020-10-29 08:42:23,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:42:23,591 INFO L276 IsEmpty]: Start isEmpty. Operand 6587 states and 9003 transitions. [2020-10-29 08:42:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-29 08:42:23,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:42:23,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:42:23,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:42:23,600 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:42:23,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:42:23,602 INFO L82 PathProgramCache]: Analyzing trace with hash 933936733, now seen corresponding path program 1 times [2020-10-29 08:42:23,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:42:23,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124392016] [2020-10-29 08:42:23,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:42:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:23,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:24,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:25,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:25,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-29 08:42:25,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:42:25,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1573 [2020-10-29 08:42:25,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:25,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:25,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:42:25,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:42:25,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-29 08:42:25,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:42:25,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:42:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:25,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:25,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:25,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:42:25,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:25,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:42:25,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:25,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:25,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:42:25,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:42:25,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:42:25,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:42:25,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:42:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:25,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:25,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:25,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-29 08:42:25,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:25,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-29 08:42:25,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:25,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:25,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:42:25,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:42:25,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-29 08:42:25,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:42:26,333 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:42:26,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124392016] [2020-10-29 08:42:26,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:42:26,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:42:26,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545140431] [2020-10-29 08:42:26,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:42:26,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:42:26,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:42:26,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:42:26,336 INFO L87 Difference]: Start difference. First operand 6587 states and 9003 transitions. Second operand 7 states. [2020-10-29 08:42:41,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:42:41,030 INFO L93 Difference]: Finished difference Result 14688 states and 20063 transitions. [2020-10-29 08:42:41,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:42:41,032 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-10-29 08:42:41,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:42:41,064 INFO L225 Difference]: With dead ends: 14688 [2020-10-29 08:42:41,064 INFO L226 Difference]: Without dead ends: 8107 [2020-10-29 08:42:41,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:42:41,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8107 states. [2020-10-29 08:42:41,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8107 to 8074. [2020-10-29 08:42:41,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8074 states. [2020-10-29 08:42:41,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8074 states to 8074 states and 10671 transitions. [2020-10-29 08:42:41,290 INFO L78 Accepts]: Start accepts. Automaton has 8074 states and 10671 transitions. Word has length 307 [2020-10-29 08:42:41,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:42:41,291 INFO L481 AbstractCegarLoop]: Abstraction has 8074 states and 10671 transitions. [2020-10-29 08:42:41,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:42:41,291 INFO L276 IsEmpty]: Start isEmpty. Operand 8074 states and 10671 transitions. [2020-10-29 08:42:41,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-29 08:42:41,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:42:41,304 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:42:41,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:42:41,304 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:42:41,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:42:41,305 INFO L82 PathProgramCache]: Analyzing trace with hash 503892151, now seen corresponding path program 1 times [2020-10-29 08:42:41,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:42:41,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407568817] [2020-10-29 08:42:41,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:42:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:41,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:41,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:41,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:42,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:46,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:46,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-10-29 08:42:46,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:42:46,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 08:42:46,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:46,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:42:46,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-29 08:42:46,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 08:42:46,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:42:46,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:42:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:46,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:46,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:46,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:42:46,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:46,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:42:46,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:46,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:46,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:42:46,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:42:46,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:42:46,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:42:46,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:42:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:46,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:46,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:46,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:42:46,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:46,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 08:42:46,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:46,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:42:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:42:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 08:42:46,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:42:46,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 08:42:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:46,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:46,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:46,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 08:42:46,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:46,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 08:42:46,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:46,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:46,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:42:46,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:42:46,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 08:42:46,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:42:47,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-29 08:42:47,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:47,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:47,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:47,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 08:42:47,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:47,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 08:42:47,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:47,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:47,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:42:47,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-29 08:42:47,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:42:47,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:42:47,305 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 248 proven. 87 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-29 08:42:47,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407568817] [2020-10-29 08:42:47,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:42:47,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:42:47,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471522909] [2020-10-29 08:42:47,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:42:47,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:42:47,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:42:47,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:42:47,310 INFO L87 Difference]: Start difference. First operand 8074 states and 10671 transitions. Second operand 7 states. [2020-10-29 08:43:03,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:43:03,892 INFO L93 Difference]: Finished difference Result 16905 states and 22316 transitions. [2020-10-29 08:43:03,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:43:03,894 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 371 [2020-10-29 08:43:03,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:43:03,927 INFO L225 Difference]: With dead ends: 16905 [2020-10-29 08:43:03,927 INFO L226 Difference]: Without dead ends: 8837 [2020-10-29 08:43:03,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:43:03,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8837 states. [2020-10-29 08:43:04,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8837 to 8796. [2020-10-29 08:43:04,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8796 states. [2020-10-29 08:43:04,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8796 states to 8796 states and 11492 transitions. [2020-10-29 08:43:04,243 INFO L78 Accepts]: Start accepts. Automaton has 8796 states and 11492 transitions. Word has length 371 [2020-10-29 08:43:04,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:43:04,244 INFO L481 AbstractCegarLoop]: Abstraction has 8796 states and 11492 transitions. [2020-10-29 08:43:04,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:43:04,245 INFO L276 IsEmpty]: Start isEmpty. Operand 8796 states and 11492 transitions. [2020-10-29 08:43:04,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-29 08:43:04,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:43:04,261 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:43:04,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:43:04,262 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:43:04,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:43:04,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1329406282, now seen corresponding path program 1 times [2020-10-29 08:43:04,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:43:04,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495194769] [2020-10-29 08:43:04,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:43:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:04,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:04,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:06,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:09,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:09,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:09,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-29 08:43:09,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:43:09,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 08:43:09,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:09,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:09,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:43:09,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-29 08:43:09,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-29 08:43:09,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:43:09,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:43:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:09,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:09,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:09,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:43:09,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:09,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:43:09,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:09,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:09,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:09,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:09,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:09,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:09,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:43:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:09,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:09,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:09,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:43:09,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:09,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-29 08:43:09,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:09,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:43:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 08:43:09,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:09,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 08:43:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:09,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:10,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:10,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-29 08:43:10,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:10,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-29 08:43:10,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:10,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:10,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:43:10,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:43:10,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-29 08:43:10,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:43:10,334 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:43:10,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495194769] [2020-10-29 08:43:10,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:43:10,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:43:10,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258423241] [2020-10-29 08:43:10,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:43:10,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:43:10,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:43:10,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:43:10,337 INFO L87 Difference]: Start difference. First operand 8796 states and 11492 transitions. Second operand 7 states. [2020-10-29 08:43:29,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:43:29,849 INFO L93 Difference]: Finished difference Result 26419 states and 35545 transitions. [2020-10-29 08:43:29,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:43:29,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 387 [2020-10-29 08:43:29,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:43:29,912 INFO L225 Difference]: With dead ends: 26419 [2020-10-29 08:43:29,912 INFO L226 Difference]: Without dead ends: 16899 [2020-10-29 08:43:29,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 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 08:43:29,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16899 states. [2020-10-29 08:43:30,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16899 to 16870. [2020-10-29 08:43:30,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16870 states. [2020-10-29 08:43:30,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16870 states to 16870 states and 22496 transitions. [2020-10-29 08:43:30,457 INFO L78 Accepts]: Start accepts. Automaton has 16870 states and 22496 transitions. Word has length 387 [2020-10-29 08:43:30,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:43:30,458 INFO L481 AbstractCegarLoop]: Abstraction has 16870 states and 22496 transitions. [2020-10-29 08:43:30,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:43:30,458 INFO L276 IsEmpty]: Start isEmpty. Operand 16870 states and 22496 transitions. [2020-10-29 08:43:30,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-29 08:43:30,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:43:30,475 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:43:30,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:43:30,475 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:43:30,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:43:30,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1357389410, now seen corresponding path program 1 times [2020-10-29 08:43:30,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:43:30,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019209324] [2020-10-29 08:43:30,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:43:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:30,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:30,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:31,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:34,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:34,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-29 08:43:34,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:43:34,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3854 [2020-10-29 08:43:34,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:34,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:34,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:43:34,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-29 08:43:34,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-29 08:43:34,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:34,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:43:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:34,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:34,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:34,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:43:34,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:34,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:43:34,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:34,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:34,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:34,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:34,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:34,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:43:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:34,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:34,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:34,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:43:34,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:34,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 08:43:34,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:34,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:34,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:43:34,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:34,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 08:43:34,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:43:34,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-29 08:43:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:34,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:34,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:34,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-29 08:43:34,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:34,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-29 08:43:34,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:34,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:34,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:43:34,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:43:34,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-29 08:43:34,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:43:35,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019209324] [2020-10-29 08:43:35,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:43:35,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:43:35,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504211572] [2020-10-29 08:43:35,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:43:35,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:43:35,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:43:35,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:43:35,414 INFO L87 Difference]: Start difference. First operand 16870 states and 22496 transitions. Second operand 7 states. [2020-10-29 08:43:55,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:43:55,225 INFO L93 Difference]: Finished difference Result 48286 states and 66599 transitions. [2020-10-29 08:43:55,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:43:55,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 397 [2020-10-29 08:43:55,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:43:55,353 INFO L225 Difference]: With dead ends: 48286 [2020-10-29 08:43:55,353 INFO L226 Difference]: Without dead ends: 31422 [2020-10-29 08:43:55,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 08:43:55,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31422 states. [2020-10-29 08:43:56,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31422 to 30578. [2020-10-29 08:43:56,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30578 states. [2020-10-29 08:43:56,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30578 states to 30578 states and 40192 transitions. [2020-10-29 08:43:56,216 INFO L78 Accepts]: Start accepts. Automaton has 30578 states and 40192 transitions. Word has length 397 [2020-10-29 08:43:56,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:43:56,217 INFO L481 AbstractCegarLoop]: Abstraction has 30578 states and 40192 transitions. [2020-10-29 08:43:56,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:43:56,217 INFO L276 IsEmpty]: Start isEmpty. Operand 30578 states and 40192 transitions. [2020-10-29 08:43:56,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2020-10-29 08:43:56,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:43:56,237 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:43:56,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:43:56,238 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:43:56,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:43:56,239 INFO L82 PathProgramCache]: Analyzing trace with hash -670467301, now seen corresponding path program 1 times [2020-10-29 08:43:56,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:43:56,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522857617] [2020-10-29 08:43:56,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:43:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:56,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:56,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:56,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:00,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:01,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:01,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 454 [2020-10-29 08:44:01,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:44:01,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 08:44:01,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:01,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:44:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-29 08:44:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 08:44:01,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:44:01,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:44:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:01,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:01,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:01,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:44:01,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:01,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:44:01,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:01,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:01,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:44:01,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:01,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:44:01,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:44:01,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:44:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:01,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:01,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:01,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:44:01,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:01,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 08:44:01,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:01,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:01,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:44:01,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:01,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 08:44:01,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:44:01,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 08:44:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:01,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:01,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:01,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 08:44:01,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:01,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 08:44:01,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:01,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:01,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:44:01,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:44:01,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 08:44:01,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:01,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-29 08:44:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:01,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:02,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:02,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 08:44:02,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:02,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 08:44:02,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:02,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:02,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:44:02,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-29 08:44:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:44:02,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:02,155 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 264 proven. 123 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-29 08:44:02,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522857617] [2020-10-29 08:44:02,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:44:02,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:44:02,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495907619] [2020-10-29 08:44:02,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:44:02,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:44:02,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:44:02,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:44:02,158 INFO L87 Difference]: Start difference. First operand 30578 states and 40192 transitions. Second operand 8 states. [2020-10-29 08:44:24,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:44:24,854 INFO L93 Difference]: Finished difference Result 84855 states and 115521 transitions. [2020-10-29 08:44:24,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 08:44:24,857 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 438 [2020-10-29 08:44:24,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:44:25,090 INFO L225 Difference]: With dead ends: 84855 [2020-10-29 08:44:25,090 INFO L226 Difference]: Without dead ends: 54985 [2020-10-29 08:44:25,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 08:44:25,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54985 states. [2020-10-29 08:44:26,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54985 to 54915. [2020-10-29 08:44:26,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54915 states. [2020-10-29 08:44:26,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54915 states to 54915 states and 71809 transitions. [2020-10-29 08:44:26,757 INFO L78 Accepts]: Start accepts. Automaton has 54915 states and 71809 transitions. Word has length 438 [2020-10-29 08:44:26,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:44:26,758 INFO L481 AbstractCegarLoop]: Abstraction has 54915 states and 71809 transitions. [2020-10-29 08:44:26,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:44:26,758 INFO L276 IsEmpty]: Start isEmpty. Operand 54915 states and 71809 transitions. [2020-10-29 08:44:26,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-10-29 08:44:26,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:44:26,783 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:44:26,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:44:26,784 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:44:26,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:44:26,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1036140610, now seen corresponding path program 1 times [2020-10-29 08:44:26,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:44:26,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916485128] [2020-10-29 08:44:26,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:44:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:27,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:27,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:28,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:32,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:32,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 513 [2020-10-29 08:44:32,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:44:32,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-29 08:44:32,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:32,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:32,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:44:32,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-29 08:44:32,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 347 [2020-10-29 08:44:32,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:32,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:44:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:32,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:32,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:32,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:44:32,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:32,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:44:32,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:32,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:32,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:44:32,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:32,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:44:32,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:44:32,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:44:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:32,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:32,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:32,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:44:32,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:32,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 08:44:32,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:32,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:32,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:44:32,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:32,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 08:44:32,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:32,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-29 08:44:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:32,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:33,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:33,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-29 08:44:33,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:33,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-29 08:44:33,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:33,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:44:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:44:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 348 [2020-10-29 08:44:33,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:33,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:44:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:33,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:33,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:33,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 08:44:33,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:33,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 08:44:33,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:33,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:33,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:44:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:44:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 08:44:33,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:33,698 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:44:33,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916485128] [2020-10-29 08:44:33,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:44:33,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:44:33,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013294021] [2020-10-29 08:44:33,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:44:33,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:44:33,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:44:33,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:44:33,702 INFO L87 Difference]: Start difference. First operand 54915 states and 71809 transitions. Second operand 8 states.