/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loops-crafted-1/Mono5_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:51:44,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:51:44,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:51:44,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:51:44,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:51:44,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:51:44,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:51:44,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:51:44,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:51:44,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:51:44,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:51:44,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:51:44,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:51:44,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:51:44,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:51:44,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:51:44,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:51:44,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:51:44,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:51:44,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:51:44,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:51:44,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:51:44,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:51:44,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:51:44,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:51:44,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:51:44,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:51:44,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:51:44,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:51:44,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:51:44,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:51:44,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:51:44,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:51:44,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:51:44,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:51:44,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:51:44,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:51:44,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:51:44,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:51:44,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:51:44,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:51:44,162 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:51:44,237 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:51:44,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:51:44,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:51:44,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:51:44,241 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:51:44,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:51:44,242 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:51:44,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:51:44,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:51:44,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:51:44,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:51:44,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:51:44,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:51:44,244 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:51:44,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:51:44,245 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:51:44,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:51:44,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:51:44,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:51:44,246 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:51:44,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:51:44,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:51:44,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:51:44,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:51:44,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:51:44,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:51:44,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:51:44,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:51:44,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:51:44,248 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:51:44,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:51:44,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:51:44,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:51:44,651 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:51:44,652 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:51:44,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/Mono5_1.c [2020-10-29 09:51:44,727 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bec81beb/f6c69aacf9aa464abca93657c888266c/FLAGbf0989d2f [2020-10-29 09:51:45,237 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:51:45,238 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/Mono5_1.c [2020-10-29 09:51:45,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bec81beb/f6c69aacf9aa464abca93657c888266c/FLAGbf0989d2f [2020-10-29 09:51:45,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bec81beb/f6c69aacf9aa464abca93657c888266c [2020-10-29 09:51:45,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:51:45,623 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:51:45,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:51:45,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:51:45,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:51:45,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:51:45" (1/1) ... [2020-10-29 09:51:45,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70dadf9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:51:45, skipping insertion in model container [2020-10-29 09:51:45,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:51:45" (1/1) ... [2020-10-29 09:51:45,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:51:45,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:51:45,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:51:45,932 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:51:45,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:51:45,967 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:51:45,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:51:45 WrapperNode [2020-10-29 09:51:45,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:51:45,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:51:45,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:51:45,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:51:45,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:51:45" (1/1) ... [2020-10-29 09:51:45,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:51:45" (1/1) ... [2020-10-29 09:51:45,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:51:45" (1/1) ... [2020-10-29 09:51:45,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:51:45" (1/1) ... [2020-10-29 09:51:46,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:51:45" (1/1) ... [2020-10-29 09:51:46,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:51:45" (1/1) ... [2020-10-29 09:51:46,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:51:45" (1/1) ... [2020-10-29 09:51:46,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:51:46,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:51:46,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:51:46,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:51:46,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:51:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:51:46,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:51:46,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:51:46,170 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:51:46,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:51:46,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:51:46,171 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:51:46,171 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:51:46,171 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:51:46,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:51:46,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:51:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:51:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:51:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:51:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:51:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:51:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:51:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:51:46,554 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:51:46,554 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 09:51:46,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:51:46 BoogieIcfgContainer [2020-10-29 09:51:46,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:51:46,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:51:46,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:51:46,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:51:46,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:51:45" (1/3) ... [2020-10-29 09:51:46,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c5636b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:51:46, skipping insertion in model container [2020-10-29 09:51:46,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:51:45" (2/3) ... [2020-10-29 09:51:46,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c5636b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:51:46, skipping insertion in model container [2020-10-29 09:51:46,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:51:46" (3/3) ... [2020-10-29 09:51:46,568 INFO L111 eAbstractionObserver]: Analyzing ICFG Mono5_1.c [2020-10-29 09:51:46,580 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:51:46,584 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:51:46,594 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:51:46,619 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:51:46,619 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:51:46,620 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:51:46,620 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:51:46,620 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:51:46,620 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:51:46,620 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:51:46,620 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:51:46,636 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-29 09:51:46,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-29 09:51:46,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:51:46,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:51:46,643 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:51:46,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:51:46,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1441742757, now seen corresponding path program 1 times [2020-10-29 09:51:46,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:51:46,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646175730] [2020-10-29 09:51:46,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:51:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:51:46,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:46,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:47,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:51:47,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 09:51:47,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:51:47,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-29 09:51:47,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:51:47,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:51:47,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:51:47,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:51:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:51:47,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:51:47,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:51:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:51:47,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:47,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:51:47,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:51:47,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:51:47,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 09:51:47,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:51:47,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:51:47,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:51:47,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:51:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:51:47,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:51:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:51:47,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646175730] [2020-10-29 09:51:47,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:51:47,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:51:47,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651029364] [2020-10-29 09:51:47,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:51:47,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:51:47,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:51:47,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:51:47,490 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 6 states. [2020-10-29 09:51:47,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:51:47,802 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2020-10-29 09:51:47,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:51:47,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-29 09:51:47,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:51:47,812 INFO L225 Difference]: With dead ends: 46 [2020-10-29 09:51:47,812 INFO L226 Difference]: Without dead ends: 18 [2020-10-29 09:51:47,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:51:47,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-29 09:51:47,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-29 09:51:47,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-29 09:51:47,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-10-29 09:51:47,856 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2020-10-29 09:51:47,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:51:47,857 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-10-29 09:51:47,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:51:47,857 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-10-29 09:51:47,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 09:51:47,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:51:47,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:51:47,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:51:47,859 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:51:47,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:51:47,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1794150295, now seen corresponding path program 1 times [2020-10-29 09:51:47,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:51:47,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181773230] [2020-10-29 09:51:47,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:51:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:51:47,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:47,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:48,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:51:48,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:51:48,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:51:48,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-29 09:51:48,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:51:48,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:51:48,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:51:48,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:51:48,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:51:48,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:51:48,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:51:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:51:48,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:48,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:51:48,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:51:48,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:51:48,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:51:48,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:51:48,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:51:48,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:51:48,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:51:48,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:51:48,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:51:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:51:48,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181773230] [2020-10-29 09:51:48,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:51:48,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 09:51:48,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623669923] [2020-10-29 09:51:48,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:51:48,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:51:48,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:51:48,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:51:48,247 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2020-10-29 09:51:48,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:51:48,381 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-10-29 09:51:48,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:51:48,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-29 09:51:48,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:51:48,383 INFO L225 Difference]: With dead ends: 34 [2020-10-29 09:51:48,383 INFO L226 Difference]: Without dead ends: 28 [2020-10-29 09:51:48,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:51:48,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-29 09:51:48,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2020-10-29 09:51:48,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-29 09:51:48,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-10-29 09:51:48,392 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 15 [2020-10-29 09:51:48,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:51:48,393 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-10-29 09:51:48,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:51:48,393 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-10-29 09:51:48,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 09:51:48,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:51:48,394 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:51:48,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:51:48,395 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:51:48,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:51:48,395 INFO L82 PathProgramCache]: Analyzing trace with hash -150266320, now seen corresponding path program 2 times [2020-10-29 09:51:48,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:51:48,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021460843] [2020-10-29 09:51:48,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:51:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:51:48,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:48,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:48,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:48,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:51:48,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 09:51:48,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:51:48,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-29 09:51:48,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:51:48,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:51:48,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:51:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:51:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:51:48,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:51:48,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:51:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:51:48,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:48,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:51:48,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:51:48,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:51:48,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:51:48,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:51:48,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:51:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:51:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:51:48,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:51:48,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:51:48,681 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:51:48,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021460843] [2020-10-29 09:51:48,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:51:48,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 09:51:48,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984319325] [2020-10-29 09:51:48,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:51:48,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:51:48,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:51:48,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:51:48,684 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2020-10-29 09:51:48,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:51:48,820 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2020-10-29 09:51:48,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:51:48,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-29 09:51:48,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:51:48,821 INFO L225 Difference]: With dead ends: 35 [2020-10-29 09:51:48,822 INFO L226 Difference]: Without dead ends: 24 [2020-10-29 09:51:48,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:51:48,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-29 09:51:48,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-29 09:51:48,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-29 09:51:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-29 09:51:48,836 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 18 [2020-10-29 09:51:48,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:51:48,837 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-29 09:51:48,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:51:48,839 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-29 09:51:48,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 09:51:48,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:51:48,839 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:51:48,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:51:48,840 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:51:48,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:51:48,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1270071241, now seen corresponding path program 1 times [2020-10-29 09:51:48,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:51:48,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956626063] [2020-10-29 09:51:48,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:51:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:51:48,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:48,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:48,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:49,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:49,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:51:49,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:51:49,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:51:49,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 900 [2020-10-29 09:51:49,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:51:49,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:51:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:51:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:51:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:51:49,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:51:49,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:51:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:51:49,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:49,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:51:49,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:51:49,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:51:49,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:51:49,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:51:49,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:51:49,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:51:49,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:51:49,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:51:49,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:51:49,889 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 09:51:49,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956626063] [2020-10-29 09:51:49,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:51:49,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:51:49,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403327698] [2020-10-29 09:51:49,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:51:49,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:51:49,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:51:49,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:51:49,892 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 7 states. [2020-10-29 09:51:50,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:51:50,107 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-10-29 09:51:50,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:51:50,108 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-29 09:51:50,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:51:50,109 INFO L225 Difference]: With dead ends: 32 [2020-10-29 09:51:50,109 INFO L226 Difference]: Without dead ends: 26 [2020-10-29 09:51:50,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:51:50,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-29 09:51:50,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-29 09:51:50,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-29 09:51:50,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-10-29 09:51:50,117 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2020-10-29 09:51:50,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:51:50,117 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-10-29 09:51:50,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:51:50,118 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-10-29 09:51:50,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 09:51:50,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:51:50,119 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:51:50,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:51:50,119 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:51:50,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:51:50,120 INFO L82 PathProgramCache]: Analyzing trace with hash 838603472, now seen corresponding path program 2 times [2020-10-29 09:51:50,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:51:50,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363825351] [2020-10-29 09:51:50,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:51:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:51:50,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:50,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:50,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:50,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:50,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:51,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:51:51,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:51:51,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:51:51,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1314 [2020-10-29 09:51:51,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:51:51,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:51:51,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:51:51,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:51:51,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:51:51,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:51:51,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:51:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:51:51,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:51,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:51:51,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:51:51,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:51:51,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:51:51,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:51:51,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:51:51,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:51:51,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:51:51,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:51:51,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:51:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 09:51:51,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363825351] [2020-10-29 09:51:51,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:51:51,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:51:51,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281257835] [2020-10-29 09:51:51,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:51:51,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:51:51,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:51:51,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:51:51,572 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 8 states. [2020-10-29 09:51:51,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:51:51,808 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-10-29 09:51:51,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:51:51,809 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-29 09:51:51,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:51:51,810 INFO L225 Difference]: With dead ends: 35 [2020-10-29 09:51:51,810 INFO L226 Difference]: Without dead ends: 29 [2020-10-29 09:51:51,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:51:51,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-29 09:51:51,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-29 09:51:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 09:51:51,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-29 09:51:51,818 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2020-10-29 09:51:51,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:51:51,818 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-29 09:51:51,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:51:51,818 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-29 09:51:51,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:51:51,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:51:51,819 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:51:51,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:51:51,820 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:51:51,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:51:51,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1819414121, now seen corresponding path program 3 times [2020-10-29 09:51:51,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:51:51,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653063628] [2020-10-29 09:51:51,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:51:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:51:51,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:51,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:51,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:52,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:52,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:52,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:53,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:51:53,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 09:51:53,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:51:53,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1832 [2020-10-29 09:51:53,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:51:53,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:51:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:51:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:51:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:51:53,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:51:53,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:51:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:51:53,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:51:53,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:51:53,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:51:53,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:51:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:51:53,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:51:53,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:51:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:51:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:51:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:51:53,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:51:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:51:53,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653063628] [2020-10-29 09:51:53,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:51:53,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:51:53,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324768126] [2020-10-29 09:51:53,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:51:53,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:51:53,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:51:53,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:51:53,913 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 9 states. [2020-10-29 09:51:56,430 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-29 09:51:56,569 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-10-29 09:51:58,890 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-29 09:52:01,689 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-10-29 09:52:06,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:52:06,231 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2020-10-29 09:52:06,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:52:06,233 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-29 09:52:06,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:52:06,235 INFO L225 Difference]: With dead ends: 68 [2020-10-29 09:52:06,235 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 09:52:06,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=131, Invalid=248, Unknown=1, NotChecked=0, Total=380 [2020-10-29 09:52:06,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 09:52:06,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 31. [2020-10-29 09:52:06,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 09:52:06,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-29 09:52:06,246 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 27 [2020-10-29 09:52:06,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:52:06,246 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-29 09:52:06,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:52:06,246 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-29 09:52:06,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 09:52:06,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:52:06,247 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:52:06,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:52:06,248 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:52:06,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:52:06,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1808023504, now seen corresponding path program 4 times [2020-10-29 09:52:06,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:52:06,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811710461] [2020-10-29 09:52:06,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:52:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:52:06,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:06,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:06,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:06,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:06,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:06,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:06,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:08,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:52:08,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 09:52:08,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:52:08,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2240 [2020-10-29 09:52:08,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:52:08,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:52:08,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:52:08,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:52:08,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:52:08,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:52:08,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:52:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:52:08,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:08,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:52:08,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:52:08,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:52:08,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:52:08,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:52:08,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:52:08,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:52:08,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:52:08,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:52:08,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:52:08,657 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:52:08,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811710461] [2020-10-29 09:52:08,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:52:08,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:52:08,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508266404] [2020-10-29 09:52:08,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:52:08,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:52:08,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:52:08,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:52:08,661 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 9 states. [2020-10-29 09:52:09,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:52:09,048 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2020-10-29 09:52:09,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:52:09,049 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-29 09:52:09,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:52:09,050 INFO L225 Difference]: With dead ends: 64 [2020-10-29 09:52:09,050 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 09:52:09,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:52:09,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 09:52:09,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-29 09:52:09,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 09:52:09,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-29 09:52:09,089 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 30 [2020-10-29 09:52:09,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:52:09,089 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-29 09:52:09,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:52:09,089 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-29 09:52:09,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 09:52:09,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:52:09,092 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:52:09,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:52:09,093 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:52:09,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:52:09,093 INFO L82 PathProgramCache]: Analyzing trace with hash 702271856, now seen corresponding path program 5 times [2020-10-29 09:52:09,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:52:09,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694536615] [2020-10-29 09:52:09,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:52:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:52:09,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:09,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:09,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:09,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:09,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:09,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:10,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:10,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:10,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:10,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:12,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:14,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:52:14,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 09:52:14,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 09:52:14,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 09:52:14,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:52:14,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:52:14,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:52:14,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:52:14,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 09:52:14,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:52:14,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:52:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:52:14,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:14,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:52:14,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:52:14,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:52:14,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:52:14,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:52:14,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:52:14,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:52:14,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:52:14,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:52:14,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:52:14,514 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 09:52:14,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694536615] [2020-10-29 09:52:14,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:52:14,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:52:14,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938372686] [2020-10-29 09:52:14,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:52:14,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:52:14,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:52:14,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:52:14,518 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 10 states. [2020-10-29 09:52:15,189 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-10-29 09:52:15,370 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2020-10-29 09:52:15,595 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-10-29 09:52:15,745 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2020-10-29 09:52:18,038 WARN L193 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 90 DAG size of output: 58 [2020-10-29 09:52:18,245 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-10-29 09:52:22,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:52:22,854 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2020-10-29 09:52:22,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:52:22,857 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-29 09:52:22,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:52:22,859 INFO L225 Difference]: With dead ends: 64 [2020-10-29 09:52:22,859 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 09:52:22,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=181, Invalid=369, Unknown=2, NotChecked=0, Total=552 [2020-10-29 09:52:22,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 09:52:22,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2020-10-29 09:52:22,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-29 09:52:22,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-10-29 09:52:22,885 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 42 [2020-10-29 09:52:22,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:52:22,886 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-10-29 09:52:22,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:52:22,886 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-10-29 09:52:22,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 09:52:22,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:52:22,890 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:52:22,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:52:22,890 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:52:22,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:52:22,891 INFO L82 PathProgramCache]: Analyzing trace with hash -891663415, now seen corresponding path program 6 times [2020-10-29 09:52:22,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:52:22,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786744856] [2020-10-29 09:52:22,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:52:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:52:22,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:22,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:23,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:23,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:23,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:23,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:23,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:23,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:24,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:24,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:27,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:52:27,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 09:52:27,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 09:52:27,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 09:52:27,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:52:27,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:52:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:52:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:52:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 09:52:27,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:52:40,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:52:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:52:40,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:40,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:52:40,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:52:40,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:52:40,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:52:40,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:52:40,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:52:40,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:52:40,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:52:40,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:52:40,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:52:40,612 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 133 refuted. 3 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 09:52:40,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786744856] [2020-10-29 09:52:40,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:52:40,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:52:40,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920013082] [2020-10-29 09:52:40,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:52:40,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:52:40,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:52:40,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=79, Unknown=6, NotChecked=0, Total=110 [2020-10-29 09:52:40,615 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 11 states. [2020-10-29 09:52:41,164 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-10-29 09:52:41,334 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-29 09:52:41,509 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-10-29 09:52:41,685 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-29 09:52:42,243 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2020-10-29 09:52:42,435 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2020-10-29 09:52:42,730 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 56 [2020-10-29 09:52:43,022 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-29 09:52:43,581 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-29 09:52:44,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:52:44,290 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2020-10-29 09:52:44,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 09:52:44,291 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-29 09:52:44,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:52:44,293 INFO L225 Difference]: With dead ends: 70 [2020-10-29 09:52:44,293 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 09:52:44,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=240, Invalid=510, Unknown=6, NotChecked=0, Total=756 [2020-10-29 09:52:44,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 09:52:44,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49. [2020-10-29 09:52:44,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 09:52:44,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-10-29 09:52:44,313 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 45 [2020-10-29 09:52:44,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:52:44,313 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-10-29 09:52:44,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:52:44,314 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-10-29 09:52:44,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 09:52:44,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:52:44,314 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:52:44,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:52:44,315 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:52:44,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:52:44,315 INFO L82 PathProgramCache]: Analyzing trace with hash -658897200, now seen corresponding path program 7 times [2020-10-29 09:52:44,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:52:44,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116363386] [2020-10-29 09:52:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:52:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:52:44,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:44,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:44,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:44,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:44,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:44,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:45,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:45,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:45,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:45,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:45,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:45,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:49,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:52:49,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 09:52:49,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 09:52:49,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 09:52:49,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:52:49,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:52:49,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:52:49,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:52:49,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 09:52:49,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:52:49,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:52:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:52:49,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:52:49,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:52:49,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:52:49,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:52:49,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:52:49,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:52:49,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:52:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:52:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:52:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:52:49,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:52:50,011 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 09:52:50,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116363386] [2020-10-29 09:52:50,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:52:50,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:52:50,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425431974] [2020-10-29 09:52:50,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:52:50,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:52:50,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:52:50,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:52:50,016 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 12 states. [2020-10-29 09:52:52,779 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-10-29 09:52:52,995 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-29 09:52:53,307 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-10-29 09:52:53,527 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2020-10-29 09:52:53,901 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2020-10-29 09:52:54,493 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-10-29 09:52:55,007 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 53 [2020-10-29 09:52:55,589 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 55 [2020-10-29 09:52:56,600 WARN L193 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 53 [2020-10-29 09:53:07,560 WARN L193 SmtUtils]: Spent 10.66 s on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-10-29 09:53:15,880 WARN L193 SmtUtils]: Spent 4.47 s on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2020-10-29 09:53:23,370 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 09:53:43,428 WARN L193 SmtUtils]: Spent 4.35 s on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2020-10-29 09:53:43,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:53:43,512 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2020-10-29 09:53:43,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 09:53:43,513 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-10-29 09:53:43,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:53:43,514 INFO L225 Difference]: With dead ends: 77 [2020-10-29 09:53:43,515 INFO L226 Difference]: Without dead ends: 71 [2020-10-29 09:53:43,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 41.7s TimeCoverageRelationStatistics Valid=329, Invalid=725, Unknown=2, NotChecked=0, Total=1056 [2020-10-29 09:53:43,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-29 09:53:43,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 52. [2020-10-29 09:53:43,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 09:53:43,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-10-29 09:53:43,530 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 48 [2020-10-29 09:53:43,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:53:43,530 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-10-29 09:53:43,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:53:43,530 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-10-29 09:53:43,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 09:53:43,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:53:43,533 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:53:43,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:53:43,533 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:53:43,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:53:43,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1602198121, now seen corresponding path program 8 times [2020-10-29 09:53:43,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:53:43,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316906664] [2020-10-29 09:53:43,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:53:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:53:43,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:43,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:43,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:43,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:43,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:44,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:44,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:44,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:45,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:45,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:45,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:45,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:45,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:45,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:48,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:53:48,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 09:53:48,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 09:53:48,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 09:53:48,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:53:48,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:53:48,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:53:48,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:53:48,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 09:53:48,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:53:48,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:53:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:53:48,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:48,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:53:48,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:53:48,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:53:48,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:53:48,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:53:48,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:53:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:53:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:53:48,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:53:48,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:53:48,834 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-29 09:53:48,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316906664] [2020-10-29 09:53:48,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:53:48,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:53:48,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695844674] [2020-10-29 09:53:48,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:53:48,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:53:48,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:53:48,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:53:48,838 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 13 states. [2020-10-29 09:53:49,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:53:49,634 INFO L93 Difference]: Finished difference Result 165 states and 207 transitions. [2020-10-29 09:53:49,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:53:49,634 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-29 09:53:49,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:53:49,637 INFO L225 Difference]: With dead ends: 165 [2020-10-29 09:53:49,637 INFO L226 Difference]: Without dead ends: 159 [2020-10-29 09:53:49,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:53:49,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-29 09:53:49,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 55. [2020-10-29 09:53:49,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 09:53:49,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-10-29 09:53:49,664 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 51 [2020-10-29 09:53:49,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:53:49,664 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-10-29 09:53:49,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:53:49,665 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-10-29 09:53:49,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 09:53:49,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:53:49,667 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 8, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:53:49,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:53:49,670 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:53:49,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:53:49,671 INFO L82 PathProgramCache]: Analyzing trace with hash -374164432, now seen corresponding path program 9 times [2020-10-29 09:53:49,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:53:49,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866110561] [2020-10-29 09:53:49,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:53:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:53:49,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:49,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:49,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:50,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:50,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:50,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:50,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:50,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:50,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:50,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:50,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:51,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:51,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:53,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:54,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:53:54,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 09:53:54,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 09:53:54,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:53:54,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:53:54,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:53:54,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:53:54,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:53:54,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 09:53:54,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:53:55,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:53:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:53:55,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:53:55,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:53:55,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:53:55,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:53:55,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:53:55,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:53:55,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:53:55,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:53:55,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:53:55,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:53:55,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:53:55,162 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 09:53:55,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866110561] [2020-10-29 09:53:55,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:53:55,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:53:55,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306406667] [2020-10-29 09:53:55,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:53:55,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:53:55,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:53:55,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:53:55,166 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 14 states. [2020-10-29 09:53:57,898 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-10-29 09:53:58,150 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-29 09:54:00,460 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-10-29 09:54:00,700 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-29 09:54:01,629 WARN L193 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2020-10-29 09:54:01,902 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2020-10-29 09:54:02,341 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 56 [2020-10-29 09:54:02,687 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2020-10-29 09:54:03,620 WARN L193 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 60 [2020-10-29 09:54:04,746 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 106 DAG size of output: 56 [2020-10-29 09:54:11,468 WARN L193 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 110 DAG size of output: 60 [2020-10-29 09:54:13,816 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 60 [2020-10-29 09:54:14,378 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 56 [2020-10-29 09:54:17,387 WARN L193 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 56 [2020-10-29 09:54:20,637 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2020-10-29 09:54:21,293 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2020-10-29 09:54:24,303 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-29 09:54:24,951 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-29 09:54:31,678 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 56 [2020-10-29 09:54:31,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:54:31,945 INFO L93 Difference]: Finished difference Result 119 states and 146 transitions. [2020-10-29 09:54:31,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 09:54:31,951 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-29 09:54:31,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:54:31,952 INFO L225 Difference]: With dead ends: 119 [2020-10-29 09:54:31,953 INFO L226 Difference]: Without dead ends: 113 [2020-10-29 09:54:31,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 30.9s TimeCoverageRelationStatistics Valid=492, Invalid=1142, Unknown=6, NotChecked=0, Total=1640 [2020-10-29 09:54:31,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-29 09:54:31,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 58. [2020-10-29 09:54:31,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 09:54:31,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2020-10-29 09:54:31,980 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 54 [2020-10-29 09:54:31,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:54:31,982 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2020-10-29 09:54:31,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:54:31,982 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2020-10-29 09:54:31,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 09:54:31,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:54:31,986 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:54:31,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 09:54:31,986 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:54:31,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:54:31,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1515680009, now seen corresponding path program 10 times [2020-10-29 09:54:31,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:54:31,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076608759] [2020-10-29 09:54:31,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:54:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:54:32,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:32,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:32,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:32,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:32,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:32,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:32,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:32,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:32,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:32,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:33,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:33,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:33,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:35,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:35,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:37,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:54:37,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 09:54:37,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 09:54:37,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:54:37,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:54:37,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:54:37,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:54:37,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:54:37,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 09:54:37,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:54:37,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:54:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:54:37,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:37,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:54:37,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:54:37,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:54:37,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:54:37,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:54:37,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:54:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:54:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:54:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:54:37,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:54:37,277 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 149 proven. 155 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-29 09:54:37,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076608759] [2020-10-29 09:54:37,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:54:37,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:54:37,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849161524] [2020-10-29 09:54:37,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:54:37,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:54:37,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:54:37,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:54:37,284 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 14 states. [2020-10-29 09:54:38,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:54:38,225 INFO L93 Difference]: Finished difference Result 109 states and 132 transitions. [2020-10-29 09:54:38,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:54:38,226 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2020-10-29 09:54:38,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:54:38,227 INFO L225 Difference]: With dead ends: 109 [2020-10-29 09:54:38,227 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 09:54:38,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:54:38,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 09:54:38,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-29 09:54:38,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 09:54:38,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2020-10-29 09:54:38,268 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 57 [2020-10-29 09:54:38,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:54:38,268 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2020-10-29 09:54:38,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:54:38,269 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2020-10-29 09:54:38,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 09:54:38,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:54:38,274 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 11, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:54:38,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 09:54:38,274 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:54:38,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:54:38,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1205582418, now seen corresponding path program 11 times [2020-10-29 09:54:38,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:54:38,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186118433] [2020-10-29 09:54:38,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:54:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:54:38,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:38,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:38,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:38,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:38,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:38,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:39,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:40,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:41,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:41,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:42,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:42,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:42,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:42,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:43,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:43,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:54:43,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 09:54:43,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 09:54:43,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 09:54:43,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:54:43,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:54:43,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:54:43,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:54:43,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 09:54:43,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:54:48,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:54:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:54:48,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:54:48,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:54:48,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:54:48,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:54:48,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:54:48,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:54:48,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:54:48,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:54:48,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:54:48,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:54:48,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:54:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 432 refuted. 3 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-29 09:54:48,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186118433] [2020-10-29 09:54:48,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:54:48,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:54:48,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888629852] [2020-10-29 09:54:48,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:54:48,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:54:48,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:54:48,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=172, Unknown=2, NotChecked=0, Total=210 [2020-10-29 09:54:48,209 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand 15 states. [2020-10-29 09:54:48,986 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-10-29 09:54:49,170 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2020-10-29 09:54:49,461 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-10-29 09:54:49,722 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2020-10-29 09:54:52,414 WARN L193 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 90 DAG size of output: 58 [2020-10-29 09:54:53,236 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2020-10-29 09:54:56,568 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 58 [2020-10-29 09:54:57,032 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 62 [2020-10-29 09:55:00,779 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 112 DAG size of output: 58 [2020-10-29 09:55:01,535 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 62 [2020-10-29 09:55:02,135 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 58 [2020-10-29 09:55:03,396 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 128 DAG size of output: 62 [2020-10-29 09:55:06,279 WARN L193 SmtUtils]: Spent 2.73 s on a formula simplification. DAG size of input: 134 DAG size of output: 58 [2020-10-29 09:55:07,215 WARN L193 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 62 [2020-10-29 09:55:07,938 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 58 [2020-10-29 09:55:09,460 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 63 [2020-10-29 09:55:11,555 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 63 [2020-10-29 09:55:16,558 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 63 [2020-10-29 09:55:19,198 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2020-10-29 09:55:19,793 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2020-10-29 09:55:20,483 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-10-29 09:55:21,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:55:21,406 INFO L93 Difference]: Finished difference Result 109 states and 128 transitions. [2020-10-29 09:55:21,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 09:55:21,413 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2020-10-29 09:55:21,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:55:21,414 INFO L225 Difference]: With dead ends: 109 [2020-10-29 09:55:21,414 INFO L226 Difference]: Without dead ends: 103 [2020-10-29 09:55:21,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 32.1s TimeCoverageRelationStatistics Valid=541, Invalid=1349, Unknown=2, NotChecked=0, Total=1892 [2020-10-29 09:55:21,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-29 09:55:21,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 76. [2020-10-29 09:55:21,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-29 09:55:21,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-10-29 09:55:21,441 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 72 [2020-10-29 09:55:21,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:55:21,441 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-10-29 09:55:21,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:55:21,442 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-10-29 09:55:21,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 09:55:21,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:55:21,442 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:55:21,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 09:55:21,443 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:55:21,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:55:21,443 INFO L82 PathProgramCache]: Analyzing trace with hash -497541209, now seen corresponding path program 12 times [2020-10-29 09:55:21,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:55:21,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452117877] [2020-10-29 09:55:21,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:55:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:55:21,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:55:21,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:55:21,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:55:21,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:55:21,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:55:21,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:55:21,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:55:21,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:55:21,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:55:22,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:55:22,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:55:26,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:55:26,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 09:55:26,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 09:55:26,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 09:55:26,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:55:26,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:55:26,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:55:26,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:55:26,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 09:55:26,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:55:31,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:55:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:55:31,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:55:31,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:55:31,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:55:31,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:55:31,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:55:31,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:55:31,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:55:31,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:55:31,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:55:31,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:55:31,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:55:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 490 refuted. 6 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-29 09:55:31,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452117877] [2020-10-29 09:55:31,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:55:31,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:55:31,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247975510] [2020-10-29 09:55:31,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:55:31,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:55:31,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:55:31,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=198, Unknown=2, NotChecked=0, Total=240 [2020-10-29 09:55:31,472 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 16 states. [2020-10-29 09:55:32,425 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-29 09:55:32,928 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-10-29 09:55:33,185 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-29 09:55:33,714 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2020-10-29 09:55:36,030 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2020-10-29 09:55:36,557 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 56 [2020-10-29 09:55:37,485 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2020-10-29 09:55:39,142 WARN L193 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 56 [2020-10-29 09:55:39,710 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 60 [2020-10-29 09:55:40,749 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 56 [2020-10-29 09:55:41,432 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 60 [2020-10-29 09:55:44,182 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 126 DAG size of output: 56 [2020-10-29 09:55:47,506 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 130 DAG size of output: 60 [2020-10-29 09:55:51,205 WARN L193 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 56 [2020-10-29 09:55:53,997 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 140 DAG size of output: 60