/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/reducercommutativity/max60-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:29:07,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:29:07,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:29:07,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:29:07,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:29:07,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:29:07,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:29:07,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:29:07,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:29:07,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:29:07,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:29:07,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:29:07,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:29:07,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:29:07,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:29:07,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:29:07,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:29:07,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:29:07,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:29:07,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:29:07,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:29:07,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:29:07,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:29:07,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:29:07,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:29:07,384 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:29:07,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:29:07,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:29:07,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:29:07,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:29:07,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:29:07,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:29:07,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:29:07,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:29:07,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:29:07,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:29:07,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:29:07,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:29:07,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:29:07,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:29:07,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:29:07,396 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 17:29:07,442 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:29:07,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:29:07,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:29:07,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:29:07,445 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:29:07,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:29:07,445 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:29:07,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:29:07,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:29:07,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:29:07,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:29:07,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:29:07,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:29:07,448 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:29:07,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:29:07,448 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:29:07,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:29:07,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:29:07,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:29:07,449 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:29:07,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:29:07,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:29:07,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:29:07,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:29:07,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:29:07,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:29:07,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:29:07,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:29:07,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:29:07,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:29:07,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:29:07,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:29:07,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:29:07,912 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:29:07,913 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:29:07,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max60-2.i [2020-10-28 17:29:08,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57caa376e/eaf37c5f39cc4a19a81845714926c6ff/FLAG3d9906ed6 [2020-10-28 17:29:08,654 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:29:08,655 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/max60-2.i [2020-10-28 17:29:08,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57caa376e/eaf37c5f39cc4a19a81845714926c6ff/FLAG3d9906ed6 [2020-10-28 17:29:08,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57caa376e/eaf37c5f39cc4a19a81845714926c6ff [2020-10-28 17:29:08,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:29:08,982 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:29:08,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:29:08,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:29:08,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:29:08,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:29:08" (1/1) ... [2020-10-28 17:29:08,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@110149f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:29:08, skipping insertion in model container [2020-10-28 17:29:08,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:29:08" (1/1) ... [2020-10-28 17:29:09,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:29:09,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:29:09,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:29:09,200 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:29:09,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:29:09,244 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:29:09,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:29:09 WrapperNode [2020-10-28 17:29:09,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:29:09,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:29:09,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:29:09,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:29:09,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:29:09" (1/1) ... [2020-10-28 17:29:09,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:29:09" (1/1) ... [2020-10-28 17:29:09,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:29:09" (1/1) ... [2020-10-28 17:29:09,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:29:09" (1/1) ... [2020-10-28 17:29:09,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:29:09" (1/1) ... [2020-10-28 17:29:09,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:29:09" (1/1) ... [2020-10-28 17:29:09,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:29:09" (1/1) ... [2020-10-28 17:29:09,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:29:09,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:29:09,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:29:09,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:29:09,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:29:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:29:09,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:29:09,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:29:09,387 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:29:09,387 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-28 17:29:09,387 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:29:09,387 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:29:09,387 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:29:09,388 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 17:29:09,388 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 17:29:09,388 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:29:09,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:29:09,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 17:29:09,389 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-28 17:29:09,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:29:09,389 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:29:09,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:29:09,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:29:09,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:29:09,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:29:09,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:29:09,976 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:29:09,977 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 17:29:09,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:29:09 BoogieIcfgContainer [2020-10-28 17:29:09,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:29:09,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:29:09,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:29:09,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:29:09,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:29:08" (1/3) ... [2020-10-28 17:29:09,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1007aa66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:29:09, skipping insertion in model container [2020-10-28 17:29:09,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:29:09" (2/3) ... [2020-10-28 17:29:09,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1007aa66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:29:09, skipping insertion in model container [2020-10-28 17:29:09,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:29:09" (3/3) ... [2020-10-28 17:29:09,996 INFO L111 eAbstractionObserver]: Analyzing ICFG max60-2.i [2020-10-28 17:29:10,011 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:29:10,018 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:29:10,032 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:29:10,078 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:29:10,079 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:29:10,079 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:29:10,079 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:29:10,079 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:29:10,079 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:29:10,080 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:29:10,080 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:29:10,103 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-28 17:29:10,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 17:29:10,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:10,115 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:29:10,116 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:10,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:10,125 INFO L82 PathProgramCache]: Analyzing trace with hash -122162658, now seen corresponding path program 1 times [2020-10-28 17:29:10,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:10,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689242893] [2020-10-28 17:29:10,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:10,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:10,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:10,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:10,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:10,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:10,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:12,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:12,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:29:12,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:29:12,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1756 [2020-10-28 17:29:12,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:12,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:12,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:29:12,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:12,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:29:12,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:12,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:12,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:12,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:12,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:12,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:29:12,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:12,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:12,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:12,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:12,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:12,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 17:29:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:12,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:12,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:12,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:12,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:29:12,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:12,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:29:12,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:12,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:12,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:12,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:12,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:12,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:12,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 17:29:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:12,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:12,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:12,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:12,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:29:12,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:12,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:29:12,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:12,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:12,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:12,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:29:12,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:12,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:12,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:29:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:12,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:12,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:12,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:29:12,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:12,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:29:12,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:12,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:29:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:12,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 17:29:12,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689242893] [2020-10-28 17:29:12,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:29:12,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 17:29:12,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218873232] [2020-10-28 17:29:12,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 17:29:12,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:12,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 17:29:12,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 17:29:12,275 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-28 17:29:12,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:12,447 INFO L93 Difference]: Finished difference Result 64 states and 86 transitions. [2020-10-28 17:29:12,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 17:29:12,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-28 17:29:12,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:12,459 INFO L225 Difference]: With dead ends: 64 [2020-10-28 17:29:12,459 INFO L226 Difference]: Without dead ends: 30 [2020-10-28 17:29:12,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 17:29:12,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-28 17:29:12,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-28 17:29:12,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-28 17:29:12,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-28 17:29:12,512 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 34 [2020-10-28 17:29:12,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:12,513 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-28 17:29:12,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 17:29:12,513 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-28 17:29:12,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 17:29:12,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:12,516 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:29:12,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:29:12,516 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:12,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:12,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1084102031, now seen corresponding path program 1 times [2020-10-28 17:29:12,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:12,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938636071] [2020-10-28 17:29:12,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:12,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:12,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:12,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:12,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:12,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:12,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:14,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:14,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:29:14,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:29:14,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1661 [2020-10-28 17:29:14,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:14,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:14,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:29:14,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:29:14,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:29:14,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:14,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:14,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:14,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:14,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:14,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:14,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:29:14,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:14,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:14,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:14,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:14,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:14,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:14,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 17:29:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:14,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:14,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:14,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:14,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:29:14,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:14,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:29:14,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:14,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:14,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:14,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:29:14,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:14,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:14,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 17:29:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:14,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:14,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:14,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:14,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:29:14,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:14,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:29:14,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:14,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:14,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:14,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:29:14,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:14,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:14,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:29:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:14,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:14,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:14,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:14,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:29:14,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:14,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:29:14,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:14,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:14,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:14,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:29:14,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:14,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:14,325 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 17:29:14,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938636071] [2020-10-28 17:29:14,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:29:14,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:29:14,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900881681] [2020-10-28 17:29:14,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:29:14,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:14,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:29:14,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:29:14,329 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 4 states. [2020-10-28 17:29:14,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:14,488 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-10-28 17:29:14,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:29:14,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-28 17:29:14,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:14,490 INFO L225 Difference]: With dead ends: 54 [2020-10-28 17:29:14,491 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 17:29:14,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:29:14,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 17:29:14,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-28 17:29:14,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 17:29:14,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-28 17:29:14,502 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 34 [2020-10-28 17:29:14,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:14,502 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-28 17:29:14,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:29:14,502 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-28 17:29:14,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 17:29:14,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:14,504 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:29:14,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:29:14,504 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:14,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:14,505 INFO L82 PathProgramCache]: Analyzing trace with hash -839912781, now seen corresponding path program 1 times [2020-10-28 17:29:14,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:14,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42334865] [2020-10-28 17:29:14,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:14,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:14,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:14,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:14,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:14,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:14,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:16,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:16,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:29:16,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:29:16,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2472 [2020-10-28 17:29:16,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:16,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:16,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:29:16,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:29:16,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:29:16,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:17,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:17,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:17,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:17,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:17,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:29:17,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:17,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:17,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:17,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:29:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:17,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:17,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:29:17,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:17,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:29:17,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:17,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:17,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:29:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:17,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 15 [2020-10-28 17:29:17,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:29:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:17,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:17,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:29:17,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:17,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:29:17,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:17,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:29:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:17,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:17,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:29:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:17,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:17,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:29:17,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:17,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:29:17,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:17,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:17,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:17,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:29:17,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:17,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:17,145 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 17:29:17,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42334865] [2020-10-28 17:29:17,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:17,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:29:17,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987962884] [2020-10-28 17:29:17,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:29:17,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:17,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:29:17,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:29:17,149 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 5 states. [2020-10-28 17:29:17,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:17,370 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-28 17:29:17,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:29:17,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-28 17:29:17,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:17,372 INFO L225 Difference]: With dead ends: 56 [2020-10-28 17:29:17,372 INFO L226 Difference]: Without dead ends: 34 [2020-10-28 17:29:17,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:29:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-28 17:29:17,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-28 17:29:17,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-28 17:29:17,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-28 17:29:17,382 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 36 [2020-10-28 17:29:17,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:17,382 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-28 17:29:17,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:29:17,382 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-28 17:29:17,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 17:29:17,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:17,384 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:29:17,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:29:17,384 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:17,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:17,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1897722485, now seen corresponding path program 2 times [2020-10-28 17:29:17,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:17,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102298238] [2020-10-28 17:29:17,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:17,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:18,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:20,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:20,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 17:29:20,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:29:20,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3097 [2020-10-28 17:29:20,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:20,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:20,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:29:20,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 17:29:20,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:29:20,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:20,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:20,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:20,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:20,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:20,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:20,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:29:20,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:20,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:20,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:20,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:20,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:20,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:20,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:29:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:20,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:20,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:20,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:20,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:29:20,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:20,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:29:20,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:20,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:20,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:20,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:20,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:20,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:20,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 17:29:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:20,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:20,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:20,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:20,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:29:20,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:20,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:29:20,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:20,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:20,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:20,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:20,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:20,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:20,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:29:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:20,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:20,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:20,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:29:20,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:20,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:29:20,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:20,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:20,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:29:20,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:29:20,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:29:20,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:20,655 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:29:20,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102298238] [2020-10-28 17:29:20,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:29:20,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:29:20,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305047408] [2020-10-28 17:29:20,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:29:20,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:20,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:29:20,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:29:20,660 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 4 states. [2020-10-28 17:29:20,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:20,864 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2020-10-28 17:29:20,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:29:20,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-28 17:29:20,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:20,867 INFO L225 Difference]: With dead ends: 58 [2020-10-28 17:29:20,867 INFO L226 Difference]: Without dead ends: 37 [2020-10-28 17:29:20,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:29:20,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-28 17:29:20,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-10-28 17:29:20,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 17:29:20,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-10-28 17:29:20,886 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 38 [2020-10-28 17:29:20,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:20,887 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-10-28 17:29:20,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:29:20,888 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-10-28 17:29:20,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 17:29:20,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:20,892 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 17:29:20,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:29:20,893 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:20,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:20,893 INFO L82 PathProgramCache]: Analyzing trace with hash -467101424, now seen corresponding path program 1 times [2020-10-28 17:29:20,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:20,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886124653] [2020-10-28 17:29:20,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:20,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:20,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:20,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:20,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:21,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:25,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:25,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 17:29:25,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:25,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 17:29:25,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:25,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:25,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:29:25,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 17:29:25,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:29:25,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:25,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:25,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:25,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:25,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:25,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:25,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:29:25,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:25,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:25,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:25,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:25,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:29:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:26,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:26,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:26,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:29:26,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:26,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:29:26,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:26,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:26,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:29:26,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:29:26,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:29:26,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:26,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 17:29:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:26,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:26,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:26,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:26,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:29:26,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:26,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:29:26,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:26,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:26,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:26,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:29:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:26,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:26,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:29:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:26,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:26,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:26,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:26,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:29:26,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:26,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:29:26,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:26,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:26,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:26,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:29:26,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:26,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:26,103 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-28 17:29:26,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886124653] [2020-10-28 17:29:26,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:26,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:29:26,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10318281] [2020-10-28 17:29:26,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:29:26,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:26,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:29:26,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:29:26,106 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 5 states. [2020-10-28 17:29:26,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:26,343 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2020-10-28 17:29:26,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:29:26,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-28 17:29:26,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:26,346 INFO L225 Difference]: With dead ends: 63 [2020-10-28 17:29:26,346 INFO L226 Difference]: Without dead ends: 41 [2020-10-28 17:29:26,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:29:26,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-28 17:29:26,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-10-28 17:29:26,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-28 17:29:26,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-10-28 17:29:26,354 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 50 [2020-10-28 17:29:26,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:26,354 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-10-28 17:29:26,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:29:26,355 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-10-28 17:29:26,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 17:29:26,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:26,356 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2020-10-28 17:29:26,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:29:26,357 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:26,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:26,357 INFO L82 PathProgramCache]: Analyzing trace with hash -26988757, now seen corresponding path program 2 times [2020-10-28 17:29:26,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:26,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169716444] [2020-10-28 17:29:26,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:26,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:26,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:26,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:26,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:26,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:27,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:31,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:31,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 17:29:31,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:29:31,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 17:29:31,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:31,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:31,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:29:31,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 17:29:31,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:29:31,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:31,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:31,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:31,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:31,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:31,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:31,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:29:31,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:31,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:31,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:31,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:29:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:31,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:31,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:31,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:31,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:29:31,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:31,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 17:29:31,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:31,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:31,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:31,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 17:29:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:31,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:31,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:31,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:31,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:29:31,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:31,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 17:29:31,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:31,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:31,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:31,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:31,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:31,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:31,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 17:29:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:31,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:31,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:31,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:31,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:29:31,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:31,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 17:29:31,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:31,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:29:31,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:31,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:31,617 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-28 17:29:31,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169716444] [2020-10-28 17:29:31,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:29:31,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:29:31,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626155922] [2020-10-28 17:29:31,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:29:31,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:31,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:29:31,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:29:31,621 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 4 states. [2020-10-28 17:29:31,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:31,773 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-10-28 17:29:31,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:29:31,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-28 17:29:31,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:31,775 INFO L225 Difference]: With dead ends: 61 [2020-10-28 17:29:31,775 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 17:29:31,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:29:31,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 17:29:31,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-28 17:29:31,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 17:29:31,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-28 17:29:31,782 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 62 [2020-10-28 17:29:31,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:31,784 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-28 17:29:31,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:29:31,784 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-28 17:29:31,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 17:29:31,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:31,786 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2020-10-28 17:29:31,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:29:31,786 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:31,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:31,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1182221175, now seen corresponding path program 1 times [2020-10-28 17:29:31,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:31,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523413966] [2020-10-28 17:29:31,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:31,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:31,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:31,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:31,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:31,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:36,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:36,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 17:29:36,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:36,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 17:29:36,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:36,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:36,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:29:36,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:29:36,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:29:36,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:36,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:36,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:36,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:36,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:36,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:36,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:29:36,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:36,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:36,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:36,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:36,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:36,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:36,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:29:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:36,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:36,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:36,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:36,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:29:36,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:36,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 17:29:36,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:36,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:36,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:36,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:36,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:36,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:36,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 17:29:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:36,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:36,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:36,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:29:36,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:36,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:29:36,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:36,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:36,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:29:36,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:29:36,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:29:36,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:36,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 17:29:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:36,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:36,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:37,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:37,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:29:37,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:37,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 17:29:37,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:37,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:29:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:37,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:37,033 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 24 proven. 30 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-28 17:29:37,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523413966] [2020-10-28 17:29:37,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:37,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:29:37,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649608440] [2020-10-28 17:29:37,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:29:37,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:37,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:29:37,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:29:37,035 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 6 states. [2020-10-28 17:29:37,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:37,362 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2020-10-28 17:29:37,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:29:37,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-28 17:29:37,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:37,365 INFO L225 Difference]: With dead ends: 73 [2020-10-28 17:29:37,365 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 17:29:37,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:29:37,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 17:29:37,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-10-28 17:29:37,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 17:29:37,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-28 17:29:37,375 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 64 [2020-10-28 17:29:37,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:37,375 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-28 17:29:37,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:29:37,375 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-28 17:29:37,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 17:29:37,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:37,377 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 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] [2020-10-28 17:29:37,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:29:37,378 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:37,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:37,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1019671772, now seen corresponding path program 2 times [2020-10-28 17:29:37,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:37,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538222502] [2020-10-28 17:29:37,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:37,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:37,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:37,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:37,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:37,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:40,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:42,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:42,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 17:29:42,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:29:42,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 17:29:42,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:42,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:42,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:29:42,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:29:42,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:29:42,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:42,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:42,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:42,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:42,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:42,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:42,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:29:42,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:42,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:42,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:42,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:42,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:42,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:42,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:29:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:42,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:42,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:42,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:42,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:29:42,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:42,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 17:29:42,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:42,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:42,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:42,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:29:42,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:42,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:42,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 17:29:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:42,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:42,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:42,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:42,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:29:42,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:42,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 17:29:42,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:42,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:42,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:42,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:29:42,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:42,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:42,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 17:29:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:42,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:42,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:42,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:42,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:29:42,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:42,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 17:29:42,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:42,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:42,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:42,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:29:42,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:42,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-28 17:29:42,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538222502] [2020-10-28 17:29:42,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:42,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:29:42,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493323994] [2020-10-28 17:29:42,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:29:42,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:42,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:29:42,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:29:42,687 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 6 states. [2020-10-28 17:29:42,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:42,857 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2020-10-28 17:29:42,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:29:42,858 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-28 17:29:42,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:42,859 INFO L225 Difference]: With dead ends: 78 [2020-10-28 17:29:42,859 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 17:29:42,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:29:42,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 17:29:42,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-28 17:29:42,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 17:29:42,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-10-28 17:29:42,867 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 76 [2020-10-28 17:29:42,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:42,867 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-10-28 17:29:42,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:29:42,868 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-10-28 17:29:42,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 17:29:42,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:42,869 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:29:42,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:29:42,869 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:42,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:42,870 INFO L82 PathProgramCache]: Analyzing trace with hash -426008346, now seen corresponding path program 3 times [2020-10-28 17:29:42,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:42,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192838762] [2020-10-28 17:29:42,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:42,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:42,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:42,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:42,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:43,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:45,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:47,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:47,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 17:29:47,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:29:47,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 17:29:47,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:47,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:47,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:29:47,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 17:29:47,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:29:47,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:47,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:47,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:47,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:47,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:47,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:47,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:47,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:47,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:47,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:47,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:47,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:47,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:29:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:47,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:47,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:48,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:48,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:29:48,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:48,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 17:29:48,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:48,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:48,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:48,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:48,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:48,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:48,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:29:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:48,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:48,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:48,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:48,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:29:48,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:48,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 17:29:48,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:48,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:48,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:48,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:48,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:48,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:48,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:29:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:48,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:48,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:48,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:48,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:29:48,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:48,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 17:29:48,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:48,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:48,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:48,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:29:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:48,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:48,140 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-28 17:29:48,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192838762] [2020-10-28 17:29:48,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:48,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:29:48,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334413125] [2020-10-28 17:29:48,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:29:48,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:48,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:29:48,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:29:48,143 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2020-10-28 17:29:48,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:48,344 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-10-28 17:29:48,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:29:48,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-28 17:29:48,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:48,349 INFO L225 Difference]: With dead ends: 73 [2020-10-28 17:29:48,349 INFO L226 Difference]: Without dead ends: 48 [2020-10-28 17:29:48,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:29:48,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-28 17:29:48,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-28 17:29:48,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 17:29:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-10-28 17:29:48,365 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 78 [2020-10-28 17:29:48,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:48,365 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-10-28 17:29:48,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:29:48,366 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-10-28 17:29:48,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 17:29:48,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:48,371 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 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] [2020-10-28 17:29:48,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:29:48,371 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:48,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:48,376 INFO L82 PathProgramCache]: Analyzing trace with hash -643125436, now seen corresponding path program 4 times [2020-10-28 17:29:48,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:48,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946973217] [2020-10-28 17:29:48,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:48,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:48,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:48,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:48,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:48,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:51,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:52,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:53,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:53,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 17:29:53,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:29:53,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 17:29:53,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:53,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:53,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:29:53,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 17:29:53,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:29:53,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:53,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:53,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:53,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:53,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:53,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:53,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:53,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:53,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:53,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:53,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:53,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:53,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:53,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:29:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:53,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:53,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:53,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:29:53,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:53,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:29:53,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:53,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:53,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:29:53,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:29:53,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:29:53,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:53,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:29:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:53,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:53,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:53,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:53,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:29:53,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:53,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 17:29:53,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:53,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:29:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:53,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:53,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:29:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:53,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:53,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:53,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:53,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:29:53,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:53,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 17:29:53,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:53,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:53,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:53,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:29:53,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:53,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:53,661 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-28 17:29:53,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946973217] [2020-10-28 17:29:53,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:53,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:29:53,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494691104] [2020-10-28 17:29:53,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:29:53,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:53,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:29:53,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:29:53,664 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 7 states. [2020-10-28 17:29:54,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:54,033 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2020-10-28 17:29:54,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:29:54,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-28 17:29:54,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:54,036 INFO L225 Difference]: With dead ends: 87 [2020-10-28 17:29:54,036 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 17:29:54,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:29:54,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 17:29:54,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-28 17:29:54,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 17:29:54,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-10-28 17:29:54,046 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 80 [2020-10-28 17:29:54,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:54,046 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-10-28 17:29:54,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:29:54,047 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-10-28 17:29:54,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 17:29:54,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:54,048 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 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] [2020-10-28 17:29:54,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:29:54,048 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:54,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:54,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1184767137, now seen corresponding path program 5 times [2020-10-28 17:29:54,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:54,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073929863] [2020-10-28 17:29:54,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:54,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:54,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:54,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:54,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:54,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:54,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:56,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:59,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:59,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 17:29:59,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:29:59,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 17:29:59,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:59,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:59,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:29:59,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 17:29:59,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:29:59,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:59,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:59,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:59,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:59,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:59,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:59,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:59,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:59,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:59,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:59,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:29:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:59,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:59,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:59,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:29:59,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:59,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 17:29:59,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:59,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:59,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:29:59,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:29:59,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:29:59,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:59,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 17:29:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:59,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:59,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:59,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:59,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:29:59,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:59,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 17:29:59,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:59,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:59,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:59,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:29:59,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:59,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:59,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 17:29:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:59,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:59,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:59,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:59,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:29:59,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:59,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 17:29:59,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:59,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:59,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:59,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:29:59,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:59,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-28 17:29:59,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073929863] [2020-10-28 17:29:59,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:59,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:29:59,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688222172] [2020-10-28 17:29:59,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:29:59,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:59,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:29:59,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:29:59,397 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 8 states. [2020-10-28 17:29:59,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:59,920 INFO L93 Difference]: Finished difference Result 95 states and 115 transitions. [2020-10-28 17:29:59,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:29:59,921 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-10-28 17:29:59,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:59,923 INFO L225 Difference]: With dead ends: 95 [2020-10-28 17:29:59,923 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 17:29:59,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:29:59,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 17:29:59,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2020-10-28 17:29:59,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 17:29:59,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-10-28 17:29:59,931 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 92 [2020-10-28 17:29:59,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:59,931 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-10-28 17:29:59,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:29:59,931 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-10-28 17:29:59,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 17:29:59,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:59,932 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 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] [2020-10-28 17:29:59,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:29:59,932 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:59,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:59,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1710311162, now seen corresponding path program 6 times [2020-10-28 17:29:59,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:59,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208967609] [2020-10-28 17:29:59,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:59,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:59,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:00,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:00,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:00,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:00,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:01,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:04,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:04,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 17:30:04,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:30:04,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 17:30:04,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:04,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:04,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:30:04,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:30:04,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:30:04,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:05,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:05,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:05,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:05,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:05,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:05,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:05,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:05,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:05,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:05,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:05,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:05,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:05,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:30:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:05,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:05,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:05,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:05,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:30:05,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:05,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 17:30:05,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:05,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:05,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:05,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:30:05,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:05,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:05,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:30:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:05,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:05,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:05,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:05,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:30:05,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:05,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 17:30:05,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:05,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:30:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:05,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:05,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:30:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:05,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:05,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:05,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:05,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:30:05,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:05,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 17:30:05,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:05,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:05,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:05,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:30:05,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:05,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:30:05,326 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2020-10-28 17:30:05,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208967609] [2020-10-28 17:30:05,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:05,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:30:05,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409494] [2020-10-28 17:30:05,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:30:05,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:05,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:30:05,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:30:05,332 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 7 states. [2020-10-28 17:30:05,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:05,602 INFO L93 Difference]: Finished difference Result 100 states and 118 transitions. [2020-10-28 17:30:05,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:30:05,603 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-28 17:30:05,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:05,605 INFO L225 Difference]: With dead ends: 100 [2020-10-28 17:30:05,605 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 17:30:05,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:30:05,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 17:30:05,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-28 17:30:05,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 17:30:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-10-28 17:30:05,631 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 104 [2020-10-28 17:30:05,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:05,631 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-10-28 17:30:05,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:30:05,632 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-10-28 17:30:05,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 17:30:05,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:05,634 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 4, 4, 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] [2020-10-28 17:30:05,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:30:05,634 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:05,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:05,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1356694972, now seen corresponding path program 7 times [2020-10-28 17:30:05,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:05,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307515810] [2020-10-28 17:30:05,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:05,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:05,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:05,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:05,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:05,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:10,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:10,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 17:30:10,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:30:10,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 17:30:10,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:10,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:10,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:30:10,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:30:10,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:30:10,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:10,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:10,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:10,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:10,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:10,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:10,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:10,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:10,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:10,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:10,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:10,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:10,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:10,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 17:30:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:10,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:10,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:10,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:10,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:30:10,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:10,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 17:30:10,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:10,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:10,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:10,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:30:10,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:10,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:10,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:30:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:10,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:10,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:10,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:10,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:30:10,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:10,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 17:30:10,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:10,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:30:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:10,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:10,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:30:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:10,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:10,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:11,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:11,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:30:11,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:11,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 17:30:11,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:11,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:11,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:11,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:30:11,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:11,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:11,075 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2020-10-28 17:30:11,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307515810] [2020-10-28 17:30:11,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:11,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:30:11,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229580596] [2020-10-28 17:30:11,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:30:11,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:11,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:30:11,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:30:11,078 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 8 states. [2020-10-28 17:30:11,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:11,295 INFO L93 Difference]: Finished difference Result 102 states and 120 transitions. [2020-10-28 17:30:11,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:30:11,296 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 106 [2020-10-28 17:30:11,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:11,297 INFO L225 Difference]: With dead ends: 102 [2020-10-28 17:30:11,297 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 17:30:11,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:30:11,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 17:30:11,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-28 17:30:11,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 17:30:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2020-10-28 17:30:11,315 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 106 [2020-10-28 17:30:11,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:11,316 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2020-10-28 17:30:11,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:30:11,316 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2020-10-28 17:30:11,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 17:30:11,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:11,321 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 5, 5, 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] [2020-10-28 17:30:11,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:30:11,321 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:11,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:11,322 INFO L82 PathProgramCache]: Analyzing trace with hash 833952766, now seen corresponding path program 8 times [2020-10-28 17:30:11,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:11,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905418679] [2020-10-28 17:30:11,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:11,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:11,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:11,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:11,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:11,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:16,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:16,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 17:30:16,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:30:16,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 17:30:16,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:16,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:16,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:30:16,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-28 17:30:16,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:30:16,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:16,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:16,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:16,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:16,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:16,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:16,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:30:16,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:16,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:16,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:16,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:16,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:16,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:16,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:30:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:16,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:16,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:16,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:16,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:30:16,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:16,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 17:30:16,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:16,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:16,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:16,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:16,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:16,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:16,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 17:30:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:16,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:16,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:16,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:16,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:30:16,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:16,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 17:30:16,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:16,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:16,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:16,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:16,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:16,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:16,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 17:30:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:16,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:16,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:16,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:16,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:30:16,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:16,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 17:30:16,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:16,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:16,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:16,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:30:16,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:16,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:16,704 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2020-10-28 17:30:16,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905418679] [2020-10-28 17:30:16,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:16,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:30:16,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772558291] [2020-10-28 17:30:16,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:30:16,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:16,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:30:16,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:30:16,707 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand 6 states. [2020-10-28 17:30:16,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:16,908 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2020-10-28 17:30:16,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:30:16,909 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2020-10-28 17:30:16,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:16,910 INFO L225 Difference]: With dead ends: 95 [2020-10-28 17:30:16,911 INFO L226 Difference]: Without dead ends: 62 [2020-10-28 17:30:16,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:30:16,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-28 17:30:16,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-28 17:30:16,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 17:30:16,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2020-10-28 17:30:16,917 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 108 [2020-10-28 17:30:16,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:16,918 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2020-10-28 17:30:16,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:30:16,918 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2020-10-28 17:30:16,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 17:30:16,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:16,919 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:30:16,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 17:30:16,920 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:16,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:16,920 INFO L82 PathProgramCache]: Analyzing trace with hash -909497380, now seen corresponding path program 9 times [2020-10-28 17:30:16,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:16,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96944335] [2020-10-28 17:30:16,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:16,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:16,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:17,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:17,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:17,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:21,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:21,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 17:30:21,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:30:21,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 17:30:21,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:21,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:21,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:30:21,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 17:30:21,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:30:21,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:22,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:22,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:22,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:22,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:22,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:22,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:22,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:22,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:22,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:22,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:22,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:22,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:22,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:30:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:22,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:22,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:22,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:30:22,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:22,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 17:30:22,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:22,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:22,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:30:22,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:30:22,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:30:22,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:22,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 17:30:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:22,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:22,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:22,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:22,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:30:22,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:22,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 17:30:22,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:22,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:30:22,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:22,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:22,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:30:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:22,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:22,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:22,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:22,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:30:22,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:22,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 17:30:22,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:22,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:22,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:22,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:30:22,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:22,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:22,341 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2020-10-28 17:30:22,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96944335] [2020-10-28 17:30:22,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:22,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:30:22,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118178254] [2020-10-28 17:30:22,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:30:22,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:22,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:30:22,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:30:22,343 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 9 states. [2020-10-28 17:30:22,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:22,890 INFO L93 Difference]: Finished difference Result 111 states and 133 transitions. [2020-10-28 17:30:22,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:30:22,891 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 110 [2020-10-28 17:30:22,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:22,892 INFO L225 Difference]: With dead ends: 111 [2020-10-28 17:30:22,892 INFO L226 Difference]: Without dead ends: 68 [2020-10-28 17:30:22,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:30:22,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-28 17:30:22,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2020-10-28 17:30:22,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-28 17:30:22,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2020-10-28 17:30:22,900 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 110 [2020-10-28 17:30:22,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:22,901 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2020-10-28 17:30:22,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:30:22,901 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2020-10-28 17:30:22,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 17:30:22,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:22,902 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:30:22,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 17:30:22,902 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:22,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:22,903 INFO L82 PathProgramCache]: Analyzing trace with hash -2112380425, now seen corresponding path program 10 times [2020-10-28 17:30:22,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:22,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348813485] [2020-10-28 17:30:22,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:22,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:22,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:23,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:23,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:23,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:27,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:27,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 17:30:27,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:30:27,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 17:30:27,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:27,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:30:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 17:30:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:30:27,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:27,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:27,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:27,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:27,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:27,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:27,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:30:27,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:27,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:27,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:27,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:27,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:27,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:27,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:30:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:27,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:27,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:28,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:28,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:30:28,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:28,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 17:30:28,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:28,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:28,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:28,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:28,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:28,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:28,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:30:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:28,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:28,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:28,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:30:28,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:28,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 17:30:28,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:28,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:28,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:30:28,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:30:28,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:30:28,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:28,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:30:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:28,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:28,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:28,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:28,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:30:28,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:28,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 17:30:28,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:28,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:28,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:28,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 17:30:28,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:28,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:28,301 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 160 proven. 226 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2020-10-28 17:30:28,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348813485] [2020-10-28 17:30:28,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:28,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:30:28,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218661962] [2020-10-28 17:30:28,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:30:28,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:28,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:30:28,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:30:28,303 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 10 states. [2020-10-28 17:30:28,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:28,992 INFO L93 Difference]: Finished difference Result 119 states and 143 transitions. [2020-10-28 17:30:28,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:30:28,993 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 122 [2020-10-28 17:30:28,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:28,994 INFO L225 Difference]: With dead ends: 119 [2020-10-28 17:30:28,994 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 17:30:28,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:30:28,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 17:30:28,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2020-10-28 17:30:28,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-28 17:30:28,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 80 transitions. [2020-10-28 17:30:29,000 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 80 transitions. Word has length 122 [2020-10-28 17:30:29,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:29,000 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 80 transitions. [2020-10-28 17:30:29,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:30:29,000 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 80 transitions. [2020-10-28 17:30:29,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 17:30:29,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:29,002 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:30:29,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 17:30:29,002 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:29,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:29,003 INFO L82 PathProgramCache]: Analyzing trace with hash 2130708370, now seen corresponding path program 11 times [2020-10-28 17:30:29,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:29,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568801646] [2020-10-28 17:30:29,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:29,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:29,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:29,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:29,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:29,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:34,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:34,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 17:30:34,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:30:34,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 17:30:34,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:34,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:30:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:30:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:30:34,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:34,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:34,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:34,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:34,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:34,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:34,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:34,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:34,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:34,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:34,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:30:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:34,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:34,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:34,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:34,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:30:34,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:34,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 17:30:34,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:34,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:34,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:34,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:30:34,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:34,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:34,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:30:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:34,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:34,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:34,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:34,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:30:34,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:34,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 17:30:34,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:34,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:34,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:34,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:30:34,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:34,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:34,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 17:30:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:34,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:34,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:34,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:34,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:30:34,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:34,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 17:30:34,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:34,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:34,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:34,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:30:34,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:34,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:34,512 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 927 trivial. 0 not checked. [2020-10-28 17:30:34,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568801646] [2020-10-28 17:30:34,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:34,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:30:34,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004400840] [2020-10-28 17:30:34,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:30:34,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:34,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:30:34,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:30:34,515 INFO L87 Difference]: Start difference. First operand 69 states and 80 transitions. Second operand 9 states. [2020-10-28 17:30:34,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:34,719 INFO L93 Difference]: Finished difference Result 124 states and 146 transitions. [2020-10-28 17:30:34,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:30:34,721 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 134 [2020-10-28 17:30:34,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:34,722 INFO L225 Difference]: With dead ends: 124 [2020-10-28 17:30:34,722 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 17:30:34,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:30:34,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 17:30:34,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-28 17:30:34,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-28 17:30:34,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2020-10-28 17:30:34,730 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 134 [2020-10-28 17:30:34,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:34,730 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2020-10-28 17:30:34,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:30:34,731 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2020-10-28 17:30:34,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 17:30:34,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:34,732 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:30:34,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 17:30:34,733 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:34,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:34,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1110210860, now seen corresponding path program 12 times [2020-10-28 17:30:34,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:34,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9503702] [2020-10-28 17:30:34,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:34,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:34,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:34,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:34,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:34,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:39,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:39,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 17:30:39,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:30:39,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 17:30:39,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:39,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:39,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:30:39,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:30:39,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:30:39,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:39,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:39,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:39,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:39,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:39,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:39,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:39,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:39,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:39,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:39,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:30:39,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 17:30:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:39,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:39,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:40,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:40,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:30:40,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:40,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 17:30:40,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:40,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:40,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:40,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:30:40,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:40,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-28 17:30:40,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:30:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:40,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:40,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:40,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:40,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:30:40,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:40,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 17:30:40,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:40,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:40,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:40,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:30:40,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:40,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:40,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 17:30:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:40,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:40,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:40,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:40,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:30:40,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:40,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 17:30:40,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:40,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:40,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:40,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:30:40,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:40,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:40,374 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 927 trivial. 0 not checked. [2020-10-28 17:30:40,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9503702] [2020-10-28 17:30:40,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:40,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:30:40,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954223196] [2020-10-28 17:30:40,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:30:40,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:40,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:30:40,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:30:40,385 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand 10 states. [2020-10-28 17:30:40,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:40,581 INFO L93 Difference]: Finished difference Result 126 states and 148 transitions. [2020-10-28 17:30:40,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:30:40,582 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 136 [2020-10-28 17:30:40,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:40,583 INFO L225 Difference]: With dead ends: 126 [2020-10-28 17:30:40,583 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 17:30:40,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:30:40,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 17:30:40,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-28 17:30:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-28 17:30:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2020-10-28 17:30:40,591 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 136 [2020-10-28 17:30:40,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:40,591 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2020-10-28 17:30:40,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:30:40,591 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2020-10-28 17:30:40,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-28 17:30:40,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:40,593 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 7, 7, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:30:40,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 17:30:40,593 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:40,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:40,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1782301290, now seen corresponding path program 13 times [2020-10-28 17:30:40,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:40,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645146837] [2020-10-28 17:30:40,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:40,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:40,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:40,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:40,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:40,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:45,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:45,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-28 17:30:45,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:30:45,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 17:30:45,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:45,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:45,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:30:45,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-28 17:30:45,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:30:45,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:45,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:45,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:45,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:45,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:45,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:45,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:45,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:45,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:45,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:45,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:45,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:45,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:45,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 17:30:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:45,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:45,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:45,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:45,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:30:45,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:45,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 17:30:45,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:45,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:45,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:45,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:45,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:45,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:45,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:30:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:45,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:45,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:45,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:45,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:30:45,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:45,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 17:30:45,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:45,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:45,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:45,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:45,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:45,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:45,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 17:30:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:45,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:45,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:45,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:45,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:30:45,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:45,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 17:30:45,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:45,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:45,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:45,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:30:45,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:45,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2020-10-28 17:30:45,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645146837] [2020-10-28 17:30:45,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:45,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:30:45,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049968385] [2020-10-28 17:30:45,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:30:45,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:45,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:30:45,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:30:45,979 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand 7 states. [2020-10-28 17:30:46,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:46,191 INFO L93 Difference]: Finished difference Result 117 states and 136 transitions. [2020-10-28 17:30:46,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:30:46,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-28 17:30:46,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:46,194 INFO L225 Difference]: With dead ends: 117 [2020-10-28 17:30:46,194 INFO L226 Difference]: Without dead ends: 76 [2020-10-28 17:30:46,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:30:46,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-28 17:30:46,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-28 17:30:46,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-28 17:30:46,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2020-10-28 17:30:46,202 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 138 [2020-10-28 17:30:46,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:46,202 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2020-10-28 17:30:46,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:30:46,202 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2020-10-28 17:30:46,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-28 17:30:46,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:46,204 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:30:46,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 17:30:46,205 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:46,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:46,205 INFO L82 PathProgramCache]: Analyzing trace with hash 519057140, now seen corresponding path program 14 times [2020-10-28 17:30:46,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:46,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837149578] [2020-10-28 17:30:46,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:46,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:46,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:46,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:46,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:46,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:51,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:51,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 17:30:51,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:30:51,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 17:30:51,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:51,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:30:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 17:30:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 17:30:51,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:51,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:51,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:51,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:51,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:51,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:51,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:51,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:51,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:51,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:51,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:51,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:51,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:51,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 17:30:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:51,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:51,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:51,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:30:51,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:51,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 17:30:51,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:51,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:51,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:30:51,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:30:51,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 17:30:51,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:51,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:30:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:51,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:51,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:51,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:51,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:30:51,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:51,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 17:30:51,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:51,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:51,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:51,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:30:51,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:51,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:51,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 17:30:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:51,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:51,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:51,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:51,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:30:51,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:51,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 17:30:51,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:51,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:51,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:51,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:30:51,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:51,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:51,712 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 0 proven. 519 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2020-10-28 17:30:51,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837149578] [2020-10-28 17:30:51,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:51,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:30:51,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471253855] [2020-10-28 17:30:51,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:30:51,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:51,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:30:51,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:30:51,714 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand 11 states. [2020-10-28 17:30:52,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:52,460 INFO L93 Difference]: Finished difference Result 135 states and 161 transitions. [2020-10-28 17:30:52,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:30:52,460 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 140 [2020-10-28 17:30:52,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:52,462 INFO L225 Difference]: With dead ends: 135 [2020-10-28 17:30:52,462 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 17:30:52,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:30:52,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 17:30:52,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-10-28 17:30:52,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 17:30:52,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2020-10-28 17:30:52,469 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 140 [2020-10-28 17:30:52,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:52,469 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2020-10-28 17:30:52,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:30:52,470 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2020-10-28 17:30:52,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 17:30:52,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:52,472 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:30:52,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 17:30:52,472 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:52,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:52,472 INFO L82 PathProgramCache]: Analyzing trace with hash 935831311, now seen corresponding path program 15 times [2020-10-28 17:30:52,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:52,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710304429] [2020-10-28 17:30:52,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:52,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:52,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:52,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:52,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:52,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:57,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:57,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 17:30:57,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:30:57,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 17:30:57,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:57,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:57,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:30:57,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:30:57,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:30:57,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:57,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:57,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:57,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:57,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:57,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:57,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:57,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:57,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:57,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:57,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:57,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:57,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:57,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 17:30:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:57,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:57,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:57,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:57,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:30:57,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:57,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 17:30:57,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:57,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:57,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:57,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:30:57,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:57,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:57,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:30:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:57,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:57,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:57,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:57,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:30:57,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:57,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 17:30:57,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:57,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:57,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:57,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:30:57,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:57,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:57,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-28 17:30:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:57,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:57,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:58,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:58,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:30:58,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:58,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 17:30:58,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:58,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:58,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:58,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:30:58,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:58,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:58,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1207 trivial. 0 not checked. [2020-10-28 17:30:58,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710304429] [2020-10-28 17:30:58,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:58,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:30:58,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588749114] [2020-10-28 17:30:58,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:30:58,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:58,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:30:58,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:30:58,052 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand 11 states. [2020-10-28 17:30:58,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:58,360 INFO L93 Difference]: Finished difference Result 140 states and 164 transitions. [2020-10-28 17:30:58,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:30:58,361 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 152 [2020-10-28 17:30:58,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:58,362 INFO L225 Difference]: With dead ends: 140 [2020-10-28 17:30:58,362 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 17:30:58,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:30:58,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 17:30:58,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-28 17:30:58,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-28 17:30:58,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2020-10-28 17:30:58,369 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 152 [2020-10-28 17:30:58,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:58,369 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2020-10-28 17:30:58,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:30:58,369 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2020-10-28 17:30:58,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 17:30:58,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:58,370 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 8, 8, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:30:58,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 17:30:58,371 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:58,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:58,371 INFO L82 PathProgramCache]: Analyzing trace with hash 340171217, now seen corresponding path program 16 times [2020-10-28 17:30:58,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:58,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349375540] [2020-10-28 17:30:58,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:58,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:58,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:58,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:58,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:58,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:03,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:03,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 17:31:03,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:31:03,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 17:31:03,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:03,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:03,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:31:03,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 17:31:03,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:31:03,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:03,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:03,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:03,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:03,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:03,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:03,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:31:03,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:03,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:03,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:03,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:03,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:03,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:03,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:31:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:03,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:03,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:03,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:03,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:31:03,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:03,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 17:31:03,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:03,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:03,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:03,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:03,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:03,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:03,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:31:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:03,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:03,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:03,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:03,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:31:03,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:03,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 17:31:03,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:03,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:03,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:03,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:03,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:03,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:03,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 17:31:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:03,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:03,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:03,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:03,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:31:03,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:03,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 17:31:03,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:03,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:03,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:03,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:31:03,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:03,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:03,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1255 trivial. 0 not checked. [2020-10-28 17:31:03,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349375540] [2020-10-28 17:31:03,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:03,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:31:03,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106928043] [2020-10-28 17:31:03,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:31:03,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:03,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:31:03,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:31:03,938 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand 8 states. [2020-10-28 17:31:04,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:04,172 INFO L93 Difference]: Finished difference Result 129 states and 150 transitions. [2020-10-28 17:31:04,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:31:04,175 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 154 [2020-10-28 17:31:04,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:04,177 INFO L225 Difference]: With dead ends: 129 [2020-10-28 17:31:04,177 INFO L226 Difference]: Without dead ends: 84 [2020-10-28 17:31:04,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:31:04,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-28 17:31:04,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-28 17:31:04,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 17:31:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2020-10-28 17:31:04,183 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 154 [2020-10-28 17:31:04,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:04,183 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2020-10-28 17:31:04,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:31:04,183 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2020-10-28 17:31:04,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 17:31:04,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:04,184 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:31:04,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 17:31:04,185 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:04,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:04,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1411052497, now seen corresponding path program 17 times [2020-10-28 17:31:04,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:04,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016581167] [2020-10-28 17:31:04,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:04,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:04,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:04,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:04,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:04,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:09,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:09,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 17:31:09,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:31:09,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 17:31:09,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:09,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:09,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:31:09,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 17:31:09,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 17:31:09,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:09,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:09,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:09,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:09,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:09,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:09,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:31:09,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:09,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:09,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:09,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:09,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:09,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:09,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:31:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:09,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:09,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:09,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:09,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:31:09,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:09,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 17:31:09,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:09,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:09,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:09,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:09,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:09,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:09,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:31:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:09,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:09,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:09,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:31:09,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:09,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 17:31:09,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:09,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:09,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:31:09,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:31:09,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 17:31:09,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:09,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 17:31:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:09,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:09,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:09,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:09,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:31:09,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:09,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 17:31:09,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:09,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:09,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:09,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:31:09,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:09,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:09,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 276 proven. 396 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2020-10-28 17:31:09,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016581167] [2020-10-28 17:31:09,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:09,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 17:31:09,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151791157] [2020-10-28 17:31:09,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:31:09,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:09,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:31:09,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:31:09,784 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand 12 states. [2020-10-28 17:31:10,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:10,662 INFO L93 Difference]: Finished difference Result 149 states and 177 transitions. [2020-10-28 17:31:10,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:31:10,663 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 156 [2020-10-28 17:31:10,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:10,664 INFO L225 Difference]: With dead ends: 149 [2020-10-28 17:31:10,664 INFO L226 Difference]: Without dead ends: 90 [2020-10-28 17:31:10,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:31:10,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-28 17:31:10,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2020-10-28 17:31:10,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 17:31:10,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 100 transitions. [2020-10-28 17:31:10,671 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 100 transitions. Word has length 156 [2020-10-28 17:31:10,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:10,671 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 100 transitions. [2020-10-28 17:31:10,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:31:10,672 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 100 transitions. [2020-10-28 17:31:10,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 17:31:10,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:10,673 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:31:10,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 17:31:10,673 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:10,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:10,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1230493238, now seen corresponding path program 18 times [2020-10-28 17:31:10,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:10,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323070962] [2020-10-28 17:31:10,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:10,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:10,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:10,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:10,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:13,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:14,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:15,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:15,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-28 17:31:15,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:31:15,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 17:31:15,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:15,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:15,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:31:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 17:31:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:31:15,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:15,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:15,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:15,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:15,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:15,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:15,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:31:15,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:15,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:15,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:15,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:15,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:15,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:15,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:31:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:15,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:15,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:15,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 17:31:15,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:15,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 17:31:15,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:15,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:15,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:31:15,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:31:15,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:31:15,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:16,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:31:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:16,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:16,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:16,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:16,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 17:31:16,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:16,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 17:31:16,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:16,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:16,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:16,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 17:31:16,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:16,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:16,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 17:31:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:16,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:16,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:16,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:16,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 17:31:16,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:16,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 17:31:16,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:16,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:16,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:16,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 17:31:16,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:16,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 0 proven. 845 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2020-10-28 17:31:16,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323070962] [2020-10-28 17:31:16,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:16,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 17:31:16,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806711486] [2020-10-28 17:31:16,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:31:16,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:16,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:31:16,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:31:16,373 INFO L87 Difference]: Start difference. First operand 87 states and 100 transitions. Second operand 13 states. [2020-10-28 17:31:17,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:17,426 INFO L93 Difference]: Finished difference Result 157 states and 187 transitions. [2020-10-28 17:31:17,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:31:17,427 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 168 [2020-10-28 17:31:17,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:17,428 INFO L225 Difference]: With dead ends: 157 [2020-10-28 17:31:17,428 INFO L226 Difference]: Without dead ends: 94 [2020-10-28 17:31:17,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:31:17,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-28 17:31:17,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2020-10-28 17:31:17,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-28 17:31:17,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2020-10-28 17:31:17,437 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 168 [2020-10-28 17:31:17,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:17,437 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2020-10-28 17:31:17,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:31:17,437 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2020-10-28 17:31:17,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-28 17:31:17,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:17,439 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:31:17,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 17:31:17,439 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:17,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:17,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1515681509, now seen corresponding path program 19 times [2020-10-28 17:31:17,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:17,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326426396] [2020-10-28 17:31:17,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:17,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:17,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:17,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:17,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:17,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:22,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:22,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 17:31:22,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:31:22,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 17:31:22,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:22,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:22,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:31:22,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:31:22,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:31:22,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:22,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:22,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:22,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:22,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:22,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:22,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:31:22,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:22,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:22,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:22,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:31:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:22,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:22,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:22,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:22,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:31:22,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:22,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 17:31:22,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:22,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:22,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:22,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:31:22,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:22,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:22,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:31:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:22,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:22,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:22,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:22,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:31:22,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:22,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 17:31:22,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:22,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:22,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:22,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:31:22,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:22,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:22,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-28 17:31:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:23,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:23,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:23,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:23,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:31:23,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:23,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 17:31:23,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:23,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:23,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:23,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:31:23,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:23,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1934 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1870 trivial. 0 not checked. [2020-10-28 17:31:23,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326426396] [2020-10-28 17:31:23,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:23,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 17:31:23,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590409552] [2020-10-28 17:31:23,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:31:23,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:23,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:31:23,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:31:23,154 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand 12 states. [2020-10-28 17:31:23,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:23,479 INFO L93 Difference]: Finished difference Result 162 states and 190 transitions. [2020-10-28 17:31:23,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:31:23,480 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 180 [2020-10-28 17:31:23,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:23,481 INFO L225 Difference]: With dead ends: 162 [2020-10-28 17:31:23,482 INFO L226 Difference]: Without dead ends: 94 [2020-10-28 17:31:23,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:31:23,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-28 17:31:23,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-28 17:31:23,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-28 17:31:23,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2020-10-28 17:31:23,489 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 180 [2020-10-28 17:31:23,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:23,489 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2020-10-28 17:31:23,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:31:23,489 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2020-10-28 17:31:23,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-28 17:31:23,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:23,491 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 9, 9, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:31:23,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 17:31:23,491 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:23,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:23,492 INFO L82 PathProgramCache]: Analyzing trace with hash -2107469145, now seen corresponding path program 20 times [2020-10-28 17:31:23,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:23,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661100779] [2020-10-28 17:31:23,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:23,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:23,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:23,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:23,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:26,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:27,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:28,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:28,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:28,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 17:31:28,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:31:28,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 17:31:28,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:28,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:28,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:31:28,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:31:28,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 17:31:28,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:28,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:28,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:28,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:28,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:28,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:28,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:31:28,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:28,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:28,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:28,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:28,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:28,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:28,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:31:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:28,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:28,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:28,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:28,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:31:28,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:28,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 17:31:28,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:28,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:28,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:28,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:31:28,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:28,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:28,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 17:31:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:28,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:28,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:29,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:29,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:31:29,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:29,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 17:31:29,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:29,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:29,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:29,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:31:29,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:29,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:29,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 17:31:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:29,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:29,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:29,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:29,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:31:29,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:29,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-28 17:31:29,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:29,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:31:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:29,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1951 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1870 trivial. 0 not checked. [2020-10-28 17:31:29,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661100779] [2020-10-28 17:31:29,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:29,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 17:31:29,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913668578] [2020-10-28 17:31:29,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:31:29,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:29,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:31:29,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:31:29,319 INFO L87 Difference]: Start difference. First operand 93 states and 107 transitions. Second operand 13 states. [2020-10-28 17:31:29,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:29,544 INFO L93 Difference]: Finished difference Result 164 states and 192 transitions. [2020-10-28 17:31:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:31:29,546 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 182 [2020-10-28 17:31:29,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:29,547 INFO L225 Difference]: With dead ends: 164 [2020-10-28 17:31:29,547 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 17:31:29,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:31:29,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 17:31:29,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-28 17:31:29,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-28 17:31:29,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2020-10-28 17:31:29,556 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 182 [2020-10-28 17:31:29,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:29,557 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2020-10-28 17:31:29,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:31:29,557 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2020-10-28 17:31:29,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-28 17:31:29,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:29,558 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:31:29,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 17:31:29,559 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:29,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:29,559 INFO L82 PathProgramCache]: Analyzing trace with hash -736770583, now seen corresponding path program 21 times [2020-10-28 17:31:29,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:29,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128039574] [2020-10-28 17:31:29,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:29,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:29,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:29,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:29,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:32,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:33,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:34,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:34,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-28 17:31:34,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:31:34,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 17:31:34,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:34,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:34,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:31:34,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-28 17:31:34,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:31:34,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:34,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:34,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:34,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:34,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:34,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:34,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:31:34,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:34,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:34,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:34,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:34,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:34,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:34,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:31:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:34,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:34,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:34,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:34,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:31:34,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:34,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 17:31:34,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:34,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:34,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:34,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:34,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:34,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:34,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:31:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:34,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:34,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:35,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:35,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:31:35,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:35,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 17:31:35,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:35,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:35,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:35,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:35,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:35,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:35,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 17:31:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:35,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:35,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:35,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:35,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:31:35,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:35,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 17:31:35,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:35,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:35,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:35,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:31:35,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:35,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:35,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2020-10-28 17:31:35,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128039574] [2020-10-28 17:31:35,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:35,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:31:35,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861828001] [2020-10-28 17:31:35,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:31:35,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:35,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:31:35,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:31:35,239 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand 9 states. [2020-10-28 17:31:35,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:35,510 INFO L93 Difference]: Finished difference Result 151 states and 176 transitions. [2020-10-28 17:31:35,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:31:35,511 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 184 [2020-10-28 17:31:35,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:35,513 INFO L225 Difference]: With dead ends: 151 [2020-10-28 17:31:35,513 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 17:31:35,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:31:35,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 17:31:35,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-28 17:31:35,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-28 17:31:35,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2020-10-28 17:31:35,523 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 184 [2020-10-28 17:31:35,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:35,523 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2020-10-28 17:31:35,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:31:35,524 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2020-10-28 17:31:35,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-28 17:31:35,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:35,525 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:31:35,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 17:31:35,526 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:35,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:35,528 INFO L82 PathProgramCache]: Analyzing trace with hash 626211271, now seen corresponding path program 22 times [2020-10-28 17:31:35,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:35,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685696809] [2020-10-28 17:31:35,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:35,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:35,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:35,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:35,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:35,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:40,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:40,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-28 17:31:40,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:31:40,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 17:31:40,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:40,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:40,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:31:40,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 17:31:40,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 17:31:40,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:40,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:40,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:40,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:40,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:40,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:40,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:31:40,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:40,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:40,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:40,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:31:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:40,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:40,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:40,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:31:40,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:40,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 17:31:40,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:40,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:40,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:31:40,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:31:40,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 17:31:40,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:41,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:31:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:41,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:41,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:41,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:41,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:31:41,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:41,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 17:31:41,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:41,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:41,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:41,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:31:41,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:41,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:41,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-28 17:31:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:41,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:41,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:41,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:31:41,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:41,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 17:31:41,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:41,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:41,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:41,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:31:41,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:41,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:41,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2020-10-28 17:31:41,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685696809] [2020-10-28 17:31:41,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:41,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:31:41,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019315014] [2020-10-28 17:31:41,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:31:41,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:41,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:31:41,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:31:41,313 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand 14 states. [2020-10-28 17:31:42,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:42,324 INFO L93 Difference]: Finished difference Result 173 states and 205 transitions. [2020-10-28 17:31:42,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:31:42,325 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 186 [2020-10-28 17:31:42,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:42,326 INFO L225 Difference]: With dead ends: 173 [2020-10-28 17:31:42,326 INFO L226 Difference]: Without dead ends: 104 [2020-10-28 17:31:42,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:31:42,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-28 17:31:42,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2020-10-28 17:31:42,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-28 17:31:42,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2020-10-28 17:31:42,335 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 186 [2020-10-28 17:31:42,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:42,335 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2020-10-28 17:31:42,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:31:42,335 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2020-10-28 17:31:42,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-28 17:31:42,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:42,337 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:31:42,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 17:31:42,337 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:42,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:42,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1566451358, now seen corresponding path program 23 times [2020-10-28 17:31:42,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:42,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441642003] [2020-10-28 17:31:42,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:42,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:42,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:42,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:42,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:42,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:47,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:47,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-28 17:31:47,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:31:47,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 17:31:47,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:47,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:47,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:31:47,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:31:47,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:31:47,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:47,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:47,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:47,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:47,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:47,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:47,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:31:47,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:47,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:47,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:47,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:47,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:31:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:47,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:47,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:47,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:47,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 17:31:47,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:47,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-28 17:31:47,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:47,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:47,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:47,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 17:31:47,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:47,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:47,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 17:31:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:47,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:47,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:47,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:47,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 17:31:47,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:47,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 17:31:47,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:47,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:47,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:47,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 17:31:47,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:47,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:48,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-28 17:31:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:48,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:48,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:48,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:48,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 17:31:48,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:48,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 17:31:48,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:48,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 17:31:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:48,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:48,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2362 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2262 trivial. 0 not checked. [2020-10-28 17:31:48,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441642003] [2020-10-28 17:31:48,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:48,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:31:48,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657515615] [2020-10-28 17:31:48,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:31:48,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:48,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:31:48,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:31:48,194 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 14 states. [2020-10-28 17:31:48,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:48,557 INFO L93 Difference]: Finished difference Result 178 states and 208 transitions. [2020-10-28 17:31:48,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:31:48,558 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 198 [2020-10-28 17:31:48,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:48,559 INFO L225 Difference]: With dead ends: 178 [2020-10-28 17:31:48,559 INFO L226 Difference]: Without dead ends: 104 [2020-10-28 17:31:48,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:31:48,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-28 17:31:48,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-28 17:31:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 17:31:48,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 118 transitions. [2020-10-28 17:31:48,569 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 118 transitions. Word has length 198 [2020-10-28 17:31:48,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:48,570 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 118 transitions. [2020-10-28 17:31:48,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:31:48,570 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 118 transitions. [2020-10-28 17:31:48,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-28 17:31:48,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:48,571 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 11, 11, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:31:48,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 17:31:48,572 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:48,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:48,572 INFO L82 PathProgramCache]: Analyzing trace with hash -782612316, now seen corresponding path program 24 times [2020-10-28 17:31:48,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:48,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015247850] [2020-10-28 17:31:48,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:48,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:48,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:48,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:48,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:48,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:53,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-28 17:31:53,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:31:53,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 17:31:53,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:53,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:31:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 17:31:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:31:53,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:53,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:53,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:53,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:53,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:53,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:31:53,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:53,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:53,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:53,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:53,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:53,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:53,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:31:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:53,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:53,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 17:31:53,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:53,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 17:31:53,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:53,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:53,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:53,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:53,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:53,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:53,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:31:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:53,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:54,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:54,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 17:31:54,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:54,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 17:31:54,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:54,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:54,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:54,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:54,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-28 17:31:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:54,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:54,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:54,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:54,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 17:31:54,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:54,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-28 17:31:54,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:54,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 17:31:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:54,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:54,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2383 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 2347 trivial. 0 not checked. [2020-10-28 17:31:54,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015247850] [2020-10-28 17:31:54,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:54,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:31:54,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199245764] [2020-10-28 17:31:54,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:31:54,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:54,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:31:54,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:31:54,374 INFO L87 Difference]: Start difference. First operand 103 states and 118 transitions. Second operand 10 states. [2020-10-28 17:31:54,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:54,539 INFO L93 Difference]: Finished difference Result 163 states and 190 transitions. [2020-10-28 17:31:54,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:31:54,540 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 200 [2020-10-28 17:31:54,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:54,541 INFO L225 Difference]: With dead ends: 163 [2020-10-28 17:31:54,541 INFO L226 Difference]: Without dead ends: 106 [2020-10-28 17:31:54,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:31:54,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-28 17:31:54,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-28 17:31:54,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-28 17:31:54,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2020-10-28 17:31:54,552 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 200 [2020-10-28 17:31:54,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:54,552 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2020-10-28 17:31:54,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:31:54,553 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2020-10-28 17:31:54,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-28 17:31:54,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:54,554 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:31:54,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 17:31:54,554 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:54,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:54,555 INFO L82 PathProgramCache]: Analyzing trace with hash 880999810, now seen corresponding path program 25 times [2020-10-28 17:31:54,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:54,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695076391] [2020-10-28 17:31:54,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:54,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:54,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:54,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:54,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:54,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:59,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:59,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-28 17:31:59,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:31:59,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 17:31:59,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:59,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:59,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:31:59,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 17:31:59,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 17:31:59,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:59,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:59,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:59,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:59,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:59,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:59,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:31:59,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:59,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:59,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:59,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:31:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:59,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:59,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:59,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 17:31:59,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:59,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 17:31:59,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:59,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:59,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:31:59,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:31:59,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 17:31:59,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:00,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:32:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:00,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:00,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:00,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:00,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 17:32:00,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:00,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 17:32:00,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:00,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:00,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:00,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 17:32:00,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:00,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:00,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-28 17:32:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:00,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:00,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:00,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:00,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 17:32:00,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:00,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-28 17:32:00,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:00,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 17:32:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:00,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:00,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2396 backedges. 0 proven. 1251 refuted. 0 times theorem prover too weak. 1145 trivial. 0 not checked. [2020-10-28 17:32:00,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695076391] [2020-10-28 17:32:00,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:00,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:32:00,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252097563] [2020-10-28 17:32:00,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:32:00,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:00,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:32:00,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:32:00,642 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand 15 states. [2020-10-28 17:32:01,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:01,750 INFO L93 Difference]: Finished difference Result 187 states and 221 transitions. [2020-10-28 17:32:01,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:32:01,751 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 202 [2020-10-28 17:32:01,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:01,753 INFO L225 Difference]: With dead ends: 187 [2020-10-28 17:32:01,753 INFO L226 Difference]: Without dead ends: 112 [2020-10-28 17:32:01,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-28 17:32:01,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-28 17:32:01,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2020-10-28 17:32:01,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-28 17:32:01,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2020-10-28 17:32:01,761 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 202 [2020-10-28 17:32:01,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:01,761 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2020-10-28 17:32:01,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:32:01,762 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-10-28 17:32:01,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-28 17:32:01,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:01,763 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:32:01,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 17:32:01,764 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:01,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:01,764 INFO L82 PathProgramCache]: Analyzing trace with hash -299613539, now seen corresponding path program 26 times [2020-10-28 17:32:01,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:01,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031461249] [2020-10-28 17:32:01,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:01,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:01,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:01,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:02,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:06,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:06,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-28 17:32:06,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:32:06,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-28 17:32:06,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:06,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:06,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:32:06,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-28 17:32:06,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 17:32:06,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:06,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:06,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:06,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:06,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:06,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:06,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:32:06,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:06,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:06,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:06,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:06,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:06,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:06,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:32:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:06,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:06,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:07,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:07,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 17:32:07,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:07,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-28 17:32:07,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:07,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:07,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:07,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:07,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:07,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:07,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 17:32:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:07,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:07,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:07,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 17:32:07,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:07,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 17:32:07,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:07,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:07,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:32:07,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:32:07,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 17:32:07,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:07,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 17:32:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:07,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:07,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:07,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:07,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 17:32:07,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:07,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-28 17:32:07,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:07,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:07,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:07,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 17:32:07,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:07,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:07,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2813 backedges. 604 proven. 880 refuted. 0 times theorem prover too weak. 1329 trivial. 0 not checked. [2020-10-28 17:32:07,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031461249] [2020-10-28 17:32:07,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:07,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 17:32:07,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498434053] [2020-10-28 17:32:07,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 17:32:07,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:07,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 17:32:07,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:32:07,913 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 16 states. [2020-10-28 17:32:09,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:09,226 INFO L93 Difference]: Finished difference Result 195 states and 231 transitions. [2020-10-28 17:32:09,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:32:09,227 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 214 [2020-10-28 17:32:09,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:09,229 INFO L225 Difference]: With dead ends: 195 [2020-10-28 17:32:09,229 INFO L226 Difference]: Without dead ends: 116 [2020-10-28 17:32:09,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-28 17:32:09,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-28 17:32:09,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2020-10-28 17:32:09,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-28 17:32:09,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2020-10-28 17:32:09,240 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 214 [2020-10-28 17:32:09,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:09,241 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2020-10-28 17:32:09,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 17:32:09,241 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2020-10-28 17:32:09,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-28 17:32:09,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:09,242 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:32:09,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 17:32:09,243 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:09,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:09,243 INFO L82 PathProgramCache]: Analyzing trace with hash 344127288, now seen corresponding path program 27 times [2020-10-28 17:32:09,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:09,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634328059] [2020-10-28 17:32:09,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:09,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:09,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:09,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:09,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:14,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:14,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 17:32:14,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:32:14,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 17:32:14,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:14,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:14,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:32:14,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:32:14,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:32:14,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:14,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:14,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:14,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:14,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:14,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:14,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:32:14,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:14,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:14,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:14,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:14,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:14,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:14,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:32:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:14,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:14,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:14,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:14,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:32:14,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:14,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-28 17:32:14,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:14,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 17:32:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:14,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:14,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 17:32:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:14,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:14,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:14,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:14,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:32:14,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:14,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-28 17:32:14,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:14,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:14,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:14,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 17:32:14,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:14,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:15,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-28 17:32:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:15,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:15,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:15,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:15,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:32:15,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:15,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-28 17:32:15,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:15,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:15,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:15,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 17:32:15,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:15,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:15,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3266 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 3145 trivial. 0 not checked. [2020-10-28 17:32:15,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634328059] [2020-10-28 17:32:15,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:15,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:32:15,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061380812] [2020-10-28 17:32:15,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:32:15,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:15,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:32:15,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:32:15,267 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand 15 states. [2020-10-28 17:32:15,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:15,663 INFO L93 Difference]: Finished difference Result 200 states and 234 transitions. [2020-10-28 17:32:15,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:32:15,664 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 226 [2020-10-28 17:32:15,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:15,666 INFO L225 Difference]: With dead ends: 200 [2020-10-28 17:32:15,666 INFO L226 Difference]: Without dead ends: 116 [2020-10-28 17:32:15,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:32:15,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-28 17:32:15,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-28 17:32:15,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-28 17:32:15,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2020-10-28 17:32:15,675 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 226 [2020-10-28 17:32:15,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:15,675 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2020-10-28 17:32:15,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:32:15,675 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2020-10-28 17:32:15,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-28 17:32:15,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:15,677 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 12, 12, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:32:15,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 17:32:15,677 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:15,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:15,678 INFO L82 PathProgramCache]: Analyzing trace with hash -907554950, now seen corresponding path program 28 times [2020-10-28 17:32:15,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:15,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092958305] [2020-10-28 17:32:15,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:15,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:15,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:15,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:15,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:15,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:20,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:20,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-28 17:32:20,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:32:20,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 17:32:20,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:20,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:32:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:32:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:32:20,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:21,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:21,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:21,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:21,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:21,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:21,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:32:21,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:21,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:21,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:21,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 17:32:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:21,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:21,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:21,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:21,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:32:21,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:21,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-28 17:32:21,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:21,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:21,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:21,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 17:32:21,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:21,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:21,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 17:32:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:21,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:21,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:21,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:21,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:32:21,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:21,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-28 17:32:21,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:21,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:21,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:21,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 17:32:21,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:21,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:21,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-28 17:32:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:21,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:21,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:21,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:21,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:32:21,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:21,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-28 17:32:21,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:21,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:21,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:21,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 17:32:21,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:21,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:21,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3289 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 3145 trivial. 0 not checked. [2020-10-28 17:32:21,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092958305] [2020-10-28 17:32:21,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:21,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 17:32:21,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798651184] [2020-10-28 17:32:21,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 17:32:21,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:21,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 17:32:21,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:32:21,940 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand 16 states. [2020-10-28 17:32:22,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:22,179 INFO L93 Difference]: Finished difference Result 202 states and 236 transitions. [2020-10-28 17:32:22,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:32:22,180 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 228 [2020-10-28 17:32:22,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:22,181 INFO L225 Difference]: With dead ends: 202 [2020-10-28 17:32:22,181 INFO L226 Difference]: Without dead ends: 118 [2020-10-28 17:32:22,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:32:22,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-28 17:32:22,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2020-10-28 17:32:22,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-28 17:32:22,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 134 transitions. [2020-10-28 17:32:22,190 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 134 transitions. Word has length 228 [2020-10-28 17:32:22,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:22,190 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 134 transitions. [2020-10-28 17:32:22,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 17:32:22,191 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 134 transitions. [2020-10-28 17:32:22,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-28 17:32:22,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:22,192 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 13, 13, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:32:22,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 17:32:22,193 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:22,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:22,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1183342788, now seen corresponding path program 29 times [2020-10-28 17:32:22,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:22,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171119754] [2020-10-28 17:32:22,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:22,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:22,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:22,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:22,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:27,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:27,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 17:32:27,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:32:27,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 17:32:27,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:27,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:27,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:32:27,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-28 17:32:27,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:32:27,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:27,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:27,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:27,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:27,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:27,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:27,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:32:27,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:27,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:27,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:27,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:27,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:27,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:27,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:32:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:27,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:27,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:27,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:27,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:32:27,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:27,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-28 17:32:27,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:27,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:27,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:27,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:27,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:27,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:27,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 17:32:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:27,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:27,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:27,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:27,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:32:27,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:27,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-28 17:32:27,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:27,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:27,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:27,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:27,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:27,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:27,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-28 17:32:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:27,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:27,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:28,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:28,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:32:28,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:28,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-28 17:32:28,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:28,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:28,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:28,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 17:32:28,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:28,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3314 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 3265 trivial. 0 not checked. [2020-10-28 17:32:28,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171119754] [2020-10-28 17:32:28,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:28,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:32:28,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712399694] [2020-10-28 17:32:28,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:32:28,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:28,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:32:28,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:32:28,136 INFO L87 Difference]: Start difference. First operand 117 states and 134 transitions. Second operand 11 states. [2020-10-28 17:32:28,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:28,377 INFO L93 Difference]: Finished difference Result 185 states and 216 transitions. [2020-10-28 17:32:28,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:32:28,378 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 230 [2020-10-28 17:32:28,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:28,379 INFO L225 Difference]: With dead ends: 185 [2020-10-28 17:32:28,379 INFO L226 Difference]: Without dead ends: 120 [2020-10-28 17:32:28,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:32:28,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-28 17:32:28,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2020-10-28 17:32:28,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-28 17:32:28,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 136 transitions. [2020-10-28 17:32:28,386 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 136 transitions. Word has length 230 [2020-10-28 17:32:28,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:28,387 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 136 transitions. [2020-10-28 17:32:28,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:32:28,387 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 136 transitions. [2020-10-28 17:32:28,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-28 17:32:28,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:28,389 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:32:28,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 17:32:28,389 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:28,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:28,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1755280794, now seen corresponding path program 30 times [2020-10-28 17:32:28,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:28,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245481462] [2020-10-28 17:32:28,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:28,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:28,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:28,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:28,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:33,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:33,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-28 17:32:33,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:32:33,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 17:32:33,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:33,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:33,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:32:33,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 17:32:33,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 17:32:33,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:33,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:33,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:33,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:33,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:33,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:33,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:32:33,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:33,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:33,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:33,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:32:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:33,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:33,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:33,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:33,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:32:33,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:33,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-28 17:32:33,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:33,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:33,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:33,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 17:32:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:33,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:33,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:33,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:32:33,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:33,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-28 17:32:33,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:33,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:33,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:32:33,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:32:33,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 17:32:33,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:34,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-28 17:32:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:34,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:34,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:34,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:34,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:32:34,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:34,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-28 17:32:34,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:34,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 17:32:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:34,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3329 backedges. 706 proven. 1031 refuted. 0 times theorem prover too weak. 1592 trivial. 0 not checked. [2020-10-28 17:32:34,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245481462] [2020-10-28 17:32:34,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:34,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 17:32:34,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169063797] [2020-10-28 17:32:34,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 17:32:34,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:34,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 17:32:34,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:32:34,527 INFO L87 Difference]: Start difference. First operand 119 states and 136 transitions. Second operand 17 states. [2020-10-28 17:32:35,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:35,940 INFO L93 Difference]: Finished difference Result 211 states and 249 transitions. [2020-10-28 17:32:35,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 17:32:35,941 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 232 [2020-10-28 17:32:35,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:35,942 INFO L225 Difference]: With dead ends: 211 [2020-10-28 17:32:35,942 INFO L226 Difference]: Without dead ends: 126 [2020-10-28 17:32:35,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-28 17:32:35,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-28 17:32:35,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2020-10-28 17:32:35,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-28 17:32:35,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2020-10-28 17:32:35,951 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 232 [2020-10-28 17:32:35,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:35,951 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2020-10-28 17:32:35,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 17:32:35,952 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2020-10-28 17:32:35,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-28 17:32:35,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:35,953 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:32:35,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 17:32:35,954 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:35,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:35,954 INFO L82 PathProgramCache]: Analyzing trace with hash -205669195, now seen corresponding path program 31 times [2020-10-28 17:32:35,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:35,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180755913] [2020-10-28 17:32:35,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:36,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:36,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:36,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:36,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:36,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:41,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:41,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-28 17:32:41,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:32:41,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 17:32:41,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:41,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:41,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:32:41,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 17:32:41,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 17:32:41,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:41,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:41,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:41,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:41,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:41,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:41,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:32:41,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:41,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:41,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:41,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:41,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:41,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:41,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:32:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:41,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:41,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:41,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:41,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 17:32:41,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:41,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 746 [2020-10-28 17:32:41,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:41,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:41,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:32:41,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:41,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 17:32:41,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:42,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 17:32:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:42,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:42,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:43,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:43,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 17:32:43,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:43,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1118 [2020-10-28 17:32:43,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:43,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:43,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:32:43,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:32:43,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 17:32:43,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:43,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-28 17:32:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:43,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:43,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:43,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:43,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 17:32:43,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:43,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-28 17:32:43,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:43,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:43,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:43,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-28 17:32:43,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:43,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:44,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3818 backedges. 0 proven. 1947 refuted. 0 times theorem prover too weak. 1871 trivial. 0 not checked. [2020-10-28 17:32:44,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180755913] [2020-10-28 17:32:44,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:44,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:32:44,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133317985] [2020-10-28 17:32:44,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:32:44,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:44,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:32:44,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:32:44,182 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 14 states. [2020-10-28 17:32:44,865 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-28 17:32:45,041 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-28 17:32:45,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:45,488 INFO L93 Difference]: Finished difference Result 278 states and 329 transitions. [2020-10-28 17:32:45,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:32:45,489 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 244 [2020-10-28 17:32:45,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:45,492 INFO L225 Difference]: With dead ends: 278 [2020-10-28 17:32:45,492 INFO L226 Difference]: Without dead ends: 191 [2020-10-28 17:32:45,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:32:45,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-28 17:32:45,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 183. [2020-10-28 17:32:45,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-28 17:32:45,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 218 transitions. [2020-10-28 17:32:45,508 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 218 transitions. Word has length 244 [2020-10-28 17:32:45,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:45,509 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 218 transitions. [2020-10-28 17:32:45,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:32:45,509 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 218 transitions. [2020-10-28 17:32:45,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-28 17:32:45,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:45,511 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:32:45,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 17:32:45,512 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:45,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:45,512 INFO L82 PathProgramCache]: Analyzing trace with hash -361649737, now seen corresponding path program 1 times [2020-10-28 17:32:45,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:45,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245746950] [2020-10-28 17:32:45,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:45,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:45,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:45,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:45,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:50,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:50,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-28 17:32:50,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:32:50,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-28 17:32:50,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:50,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:32:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-28 17:32:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 17:32:50,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:50,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:50,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:50,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:50,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:50,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:50,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:32:50,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:50,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:50,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:50,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:50,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:50,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:50,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:32:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:50,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:50,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:50,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:50,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 17:32:50,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:50,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-28 17:32:50,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:50,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:50,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:50,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:50,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:50,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:50,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 17:32:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:51,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:51,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:51,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 17:32:51,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:51,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-28 17:32:51,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:51,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:51,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:32:51,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:32:51,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 17:32:51,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:51,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-28 17:32:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:51,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:51,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:51,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:51,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 17:32:51,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:51,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-28 17:32:51,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:51,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:51,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:51,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-28 17:32:51,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:51,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3818 backedges. 816 proven. 1194 refuted. 0 times theorem prover too weak. 1808 trivial. 0 not checked. [2020-10-28 17:32:51,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245746950] [2020-10-28 17:32:51,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:51,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 17:32:51,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124402788] [2020-10-28 17:32:51,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 17:32:51,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:51,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 17:32:51,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:32:51,895 INFO L87 Difference]: Start difference. First operand 183 states and 218 transitions. Second operand 18 states. [2020-10-28 17:32:53,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:53,429 INFO L93 Difference]: Finished difference Result 346 states and 426 transitions. [2020-10-28 17:32:53,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:32:53,430 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 244 [2020-10-28 17:32:53,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:53,434 INFO L225 Difference]: With dead ends: 346 [2020-10-28 17:32:53,434 INFO L226 Difference]: Without dead ends: 197 [2020-10-28 17:32:53,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 17:32:53,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-28 17:32:53,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 191. [2020-10-28 17:32:53,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-28 17:32:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 228 transitions. [2020-10-28 17:32:53,452 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 228 transitions. Word has length 244 [2020-10-28 17:32:53,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:53,452 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 228 transitions. [2020-10-28 17:32:53,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 17:32:53,452 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 228 transitions. [2020-10-28 17:32:53,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-28 17:32:53,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:53,455 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:32:53,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 17:32:53,455 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:53,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:53,456 INFO L82 PathProgramCache]: Analyzing trace with hash 239861330, now seen corresponding path program 2 times [2020-10-28 17:32:53,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:53,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600351036] [2020-10-28 17:32:53,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:53,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:53,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:53,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:53,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:58,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:58,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-28 17:32:58,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:32:58,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 17:32:58,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:58,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:58,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:32:58,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:32:58,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:32:58,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:58,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:58,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:58,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:58,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:58,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:58,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:32:58,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:58,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:58,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:58,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:58,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:58,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:58,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:32:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:58,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:58,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:59,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:59,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 17:32:59,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:59,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-28 17:32:59,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:59,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:59,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:59,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 17:32:59,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:59,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:59,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-28 17:32:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:59,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:59,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:59,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:59,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 17:32:59,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:59,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-28 17:32:59,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:59,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 17:32:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:59,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:59,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-28 17:32:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:59,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:59,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:59,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:59,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 17:32:59,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:59,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-28 17:32:59,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:59,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:59,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:59,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 17:32:59,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:59,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:59,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4343 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 4174 trivial. 0 not checked. [2020-10-28 17:32:59,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600351036] [2020-10-28 17:32:59,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:59,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 17:32:59,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097961678] [2020-10-28 17:32:59,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 17:32:59,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:59,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 17:32:59,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:32:59,754 INFO L87 Difference]: Start difference. First operand 191 states and 228 transitions. Second operand 17 states. [2020-10-28 17:33:00,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:00,088 INFO L93 Difference]: Finished difference Result 352 states and 426 transitions. [2020-10-28 17:33:00,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 17:33:00,089 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 256 [2020-10-28 17:33:00,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:00,091 INFO L225 Difference]: With dead ends: 352 [2020-10-28 17:33:00,091 INFO L226 Difference]: Without dead ends: 194 [2020-10-28 17:33:00,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:33:00,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-28 17:33:00,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 193. [2020-10-28 17:33:00,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-28 17:33:00,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 230 transitions. [2020-10-28 17:33:00,106 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 230 transitions. Word has length 256 [2020-10-28 17:33:00,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:00,106 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 230 transitions. [2020-10-28 17:33:00,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 17:33:00,106 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 230 transitions. [2020-10-28 17:33:00,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-28 17:33:00,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:00,109 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 14, 14, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:33:00,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 17:33:00,109 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:00,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:00,110 INFO L82 PathProgramCache]: Analyzing trace with hash 162166548, now seen corresponding path program 3 times [2020-10-28 17:33:00,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:00,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993257701] [2020-10-28 17:33:00,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY