/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:17:04,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:17:04,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:17:04,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:17:04,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:17:04,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:17:04,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:17:04,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:17:04,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:17:04,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:17:04,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:17:04,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:17:04,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:17:04,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:17:04,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:17:04,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:17:04,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:17:04,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:17:04,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:17:04,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:17:04,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:17:04,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:17:04,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:17:04,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:17:04,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:17:04,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:17:04,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:17:04,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:17:04,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:17:04,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:17:04,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:17:04,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:17:04,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:17:04,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:17:04,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:17:04,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:17:04,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:17:04,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:17:04,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:17:04,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:17:04,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:17:04,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 10:17:04,289 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:17:04,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:17:04,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:17:04,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:17:04,292 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:17:04,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:17:04,292 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:17:04,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:17:04,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:17:04,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:17:04,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:17:04,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:17:04,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:17:04,294 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:17:04,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:17:04,294 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:17:04,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:17:04,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:17:04,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:17:04,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:17:04,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:17:04,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:17:04,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:17:04,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:17:04,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:17:04,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:17:04,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:17:04,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:17:04,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:17:04,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:17:04,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:17:04,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:17:04,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:17:04,733 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:17:04,734 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:17:04,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label31.c [2020-10-28 10:17:04,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d707af418/c30a6b5fd18d4b1aa1b2eeb9da09ce48/FLAGb4796697f [2020-10-28 10:17:05,613 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:17:05,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label31.c [2020-10-28 10:17:05,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d707af418/c30a6b5fd18d4b1aa1b2eeb9da09ce48/FLAGb4796697f [2020-10-28 10:17:05,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d707af418/c30a6b5fd18d4b1aa1b2eeb9da09ce48 [2020-10-28 10:17:05,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:17:05,728 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:17:05,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:17:05,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:17:05,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:17:05,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:17:05" (1/1) ... [2020-10-28 10:17:05,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@460c7754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:17:05, skipping insertion in model container [2020-10-28 10:17:05,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:17:05" (1/1) ... [2020-10-28 10:17:05,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:17:05,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:17:06,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:17:06,624 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:17:06,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:17:06,944 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:17:06,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:17:06 WrapperNode [2020-10-28 10:17:06,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:17:06,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:17:06,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:17:06,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:17:06,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:17:06" (1/1) ... [2020-10-28 10:17:06,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:17:06" (1/1) ... [2020-10-28 10:17:06,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:17:06" (1/1) ... [2020-10-28 10:17:06,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:17:06" (1/1) ... [2020-10-28 10:17:07,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:17:06" (1/1) ... [2020-10-28 10:17:07,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:17:06" (1/1) ... [2020-10-28 10:17:07,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:17:06" (1/1) ... [2020-10-28 10:17:07,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:17:07,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:17:07,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:17:07,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:17:07,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:17:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:17:07,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:17:07,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:17:07,212 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:17:07,212 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:17:07,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:17:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:17:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:17:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:17:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:17:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:17:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:17:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:17:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:17:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:17:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:17:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:17:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:17:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:17:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:17:09,910 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:17:09,910 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:17:09,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:17:09 BoogieIcfgContainer [2020-10-28 10:17:09,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:17:09,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:17:09,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:17:09,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:17:09,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:17:05" (1/3) ... [2020-10-28 10:17:09,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606b6bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:17:09, skipping insertion in model container [2020-10-28 10:17:09,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:17:06" (2/3) ... [2020-10-28 10:17:09,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606b6bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:17:09, skipping insertion in model container [2020-10-28 10:17:09,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:17:09" (3/3) ... [2020-10-28 10:17:09,923 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label31.c [2020-10-28 10:17:09,936 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:17:09,942 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:17:09,956 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:17:09,987 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:17:09,988 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:17:09,988 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:17:09,988 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:17:09,988 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:17:09,988 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:17:09,988 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:17:09,989 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:17:10,013 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-28 10:17:10,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 10:17:10,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:17:10,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:17:10,036 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:17:10,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:17:10,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1158069176, now seen corresponding path program 1 times [2020-10-28 10:17:10,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:17:10,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583713400] [2020-10-28 10:17:10,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:17:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:10,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:10,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:15,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:15,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 10:17:15,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:17:15,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4716 [2020-10-28 10:17:15,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:15,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:15,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:17:15,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:17:15,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-28 10:17:15,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:17:15,857 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:17:15,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:17:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:15,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:15,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:15,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:17:15,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:15,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 10:17:15,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:15,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:15,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:17:15,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:15,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:17:15,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:17:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:17:16,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583713400] [2020-10-28 10:17:16,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:17:16,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 10:17:16,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038861963] [2020-10-28 10:17:16,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 10:17:16,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:17:16,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 10:17:16,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 10:17:16,049 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-28 10:17:16,531 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:17:19,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:17:19,989 INFO L93 Difference]: Finished difference Result 898 states and 1560 transitions. [2020-10-28 10:17:19,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:17:19,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-10-28 10:17:19,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:17:20,024 INFO L225 Difference]: With dead ends: 898 [2020-10-28 10:17:20,025 INFO L226 Difference]: Without dead ends: 489 [2020-10-28 10:17:20,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:17:20,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-10-28 10:17:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 471. [2020-10-28 10:17:20,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-10-28 10:17:20,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 756 transitions. [2020-10-28 10:17:20,182 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 756 transitions. Word has length 158 [2020-10-28 10:17:20,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:17:20,183 INFO L481 AbstractCegarLoop]: Abstraction has 471 states and 756 transitions. [2020-10-28 10:17:20,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 10:17:20,183 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 756 transitions. [2020-10-28 10:17:20,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-28 10:17:20,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:17:20,190 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:17:20,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:17:20,190 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:17:20,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:17:20,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1667315015, now seen corresponding path program 1 times [2020-10-28 10:17:20,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:17:20,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51021013] [2020-10-28 10:17:20,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:17:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:20,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:20,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:22,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:23,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:23,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 10:17:23,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:17:23,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2827 [2020-10-28 10:17:23,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:23,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:17:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 10:17:23,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-28 10:17:23,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 10:17:23,447 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:17:23,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:17:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:23,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:23,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:23,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:17:23,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:23,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:17:23,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:23,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:23,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:17:23,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:23,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:17:23,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:23,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:17:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:23,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:23,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:23,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:17:23,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:23,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 10:17:23,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:23,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:23,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:17:23,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:23,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 10:17:23,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:23,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:17:23,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51021013] [2020-10-28 10:17:23,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:17:23,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:17:23,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652728239] [2020-10-28 10:17:23,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:17:23,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:17:23,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:17:23,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:17:23,689 INFO L87 Difference]: Start difference. First operand 471 states and 756 transitions. Second operand 5 states. [2020-10-28 10:17:23,953 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:17:27,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:17:27,010 INFO L93 Difference]: Finished difference Result 1375 states and 2242 transitions. [2020-10-28 10:17:27,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:17:27,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-28 10:17:27,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:17:27,018 INFO L225 Difference]: With dead ends: 1375 [2020-10-28 10:17:27,018 INFO L226 Difference]: Without dead ends: 910 [2020-10-28 10:17:27,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:17:27,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2020-10-28 10:17:27,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 682. [2020-10-28 10:17:27,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2020-10-28 10:17:27,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1105 transitions. [2020-10-28 10:17:27,055 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1105 transitions. Word has length 167 [2020-10-28 10:17:27,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:17:27,056 INFO L481 AbstractCegarLoop]: Abstraction has 682 states and 1105 transitions. [2020-10-28 10:17:27,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:17:27,056 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1105 transitions. [2020-10-28 10:17:27,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 10:17:27,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:17:27,060 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:17:27,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:17:27,060 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:17:27,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:17:27,061 INFO L82 PathProgramCache]: Analyzing trace with hash -721878988, now seen corresponding path program 1 times [2020-10-28 10:17:27,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:17:27,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146116136] [2020-10-28 10:17:27,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:17:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:27,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:27,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:27,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:27,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:28,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:29,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:29,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:29,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 10:17:29,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 10:17:29,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2674 [2020-10-28 10:17:29,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:29,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:29,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:17:29,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 10:17:29,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 10:17:29,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:30,188 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:17:30,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:17:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:30,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:30,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:30,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:17:30,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:30,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:17:30,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:30,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:30,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:17:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:17:30,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:30,332 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 10:17:30,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:17:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:30,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:30,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:30,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:30,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:17:30,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:17:30,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 10:17:30,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:30,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:17:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:30,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 10:17:30,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:30,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:17:30,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146116136] [2020-10-28 10:17:30,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:17:30,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:17:30,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951365509] [2020-10-28 10:17:30,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:17:30,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:17:30,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:17:30,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:17:30,447 INFO L87 Difference]: Start difference. First operand 682 states and 1105 transitions. Second operand 5 states. [2020-10-28 10:17:30,857 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:17:33,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:17:33,658 INFO L93 Difference]: Finished difference Result 1993 states and 3264 transitions. [2020-10-28 10:17:33,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:17:33,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-28 10:17:33,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:17:33,667 INFO L225 Difference]: With dead ends: 1993 [2020-10-28 10:17:33,667 INFO L226 Difference]: Without dead ends: 686 [2020-10-28 10:17:33,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:17:33,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-10-28 10:17:33,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 682. [2020-10-28 10:17:33,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2020-10-28 10:17:33,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1104 transitions. [2020-10-28 10:17:33,704 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1104 transitions. Word has length 168 [2020-10-28 10:17:33,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:17:33,704 INFO L481 AbstractCegarLoop]: Abstraction has 682 states and 1104 transitions. [2020-10-28 10:17:33,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:17:33,705 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1104 transitions. [2020-10-28 10:17:33,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 10:17:33,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:17:33,714 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:17:33,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:17:33,714 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:17:33,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:17:33,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1066707150, now seen corresponding path program 1 times [2020-10-28 10:17:33,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:17:33,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949930019] [2020-10-28 10:17:33,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:17:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:33,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:34,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:34,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:35,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:36,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:36,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 10:17:36,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:17:36,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2853 [2020-10-28 10:17:36,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:36,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:17:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 10:17:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 10:17:36,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:17:36,950 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:17:36,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:17:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:36,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:36,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:36,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:17:36,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:36,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:17:36,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:36,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:36,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:17:36,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:36,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:17:36,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 10:17:37,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:17:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:37,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:37,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:37,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:17:37,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:37,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:17:37,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:37,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:37,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:17:37,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:37,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 10:17:37,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:17:37,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949930019] [2020-10-28 10:17:37,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:17:37,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:17:37,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999456228] [2020-10-28 10:17:37,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:17:37,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:17:37,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:17:37,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:17:37,165 INFO L87 Difference]: Start difference. First operand 682 states and 1104 transitions. Second operand 5 states. [2020-10-28 10:17:37,557 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:17:40,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:17:40,766 INFO L93 Difference]: Finished difference Result 1992 states and 3279 transitions. [2020-10-28 10:17:40,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:17:40,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-28 10:17:40,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:17:40,775 INFO L225 Difference]: With dead ends: 1992 [2020-10-28 10:17:40,775 INFO L226 Difference]: Without dead ends: 1316 [2020-10-28 10:17:40,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:17:40,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2020-10-28 10:17:40,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1100. [2020-10-28 10:17:40,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1100 states. [2020-10-28 10:17:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1744 transitions. [2020-10-28 10:17:40,820 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1744 transitions. Word has length 168 [2020-10-28 10:17:40,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:17:40,821 INFO L481 AbstractCegarLoop]: Abstraction has 1100 states and 1744 transitions. [2020-10-28 10:17:40,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:17:40,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1744 transitions. [2020-10-28 10:17:40,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-28 10:17:40,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:17:40,825 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:17:40,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:17:40,826 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:17:40,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:17:40,826 INFO L82 PathProgramCache]: Analyzing trace with hash -343807009, now seen corresponding path program 1 times [2020-10-28 10:17:40,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:17:40,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480893428] [2020-10-28 10:17:40,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:17:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:40,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:41,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:42,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:42,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 10:17:42,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:17:42,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1615 [2020-10-28 10:17:42,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:42,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:42,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:17:42,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 10:17:42,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-28 10:17:42,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:42,791 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:17:42,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:17:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:42,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:42,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:42,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:17:42,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:42,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:17:42,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:42,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:42,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:17:42,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:42,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:17:42,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 10:17:42,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:17:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:42,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:42,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:42,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 10:17:42,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:42,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 10:17:42,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:42,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:42,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:17:42,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:42,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 10:17:42,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 10:17:43,019 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:17:43,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480893428] [2020-10-28 10:17:43,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:17:43,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:17:43,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013744769] [2020-10-28 10:17:43,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:17:43,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:17:43,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:17:43,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:17:43,022 INFO L87 Difference]: Start difference. First operand 1100 states and 1744 transitions. Second operand 5 states. [2020-10-28 10:17:43,304 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:17:46,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:17:46,321 INFO L93 Difference]: Finished difference Result 3257 states and 5268 transitions. [2020-10-28 10:17:46,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:17:46,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-28 10:17:46,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:17:46,345 INFO L225 Difference]: With dead ends: 3257 [2020-10-28 10:17:46,346 INFO L226 Difference]: Without dead ends: 2163 [2020-10-28 10:17:46,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:17:46,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2020-10-28 10:17:46,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2158. [2020-10-28 10:17:46,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2158 states. [2020-10-28 10:17:46,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2158 states to 2158 states and 3294 transitions. [2020-10-28 10:17:46,487 INFO L78 Accepts]: Start accepts. Automaton has 2158 states and 3294 transitions. Word has length 174 [2020-10-28 10:17:46,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:17:46,488 INFO L481 AbstractCegarLoop]: Abstraction has 2158 states and 3294 transitions. [2020-10-28 10:17:46,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:17:46,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2158 states and 3294 transitions. [2020-10-28 10:17:46,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-28 10:17:46,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:17:46,498 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:17:46,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:17:46,499 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:17:46,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:17:46,499 INFO L82 PathProgramCache]: Analyzing trace with hash 118868588, now seen corresponding path program 1 times [2020-10-28 10:17:46,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:17:46,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52422840] [2020-10-28 10:17:46,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:17:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:46,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:46,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:48,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:49,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:51,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:51,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-28 10:17:51,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:17:51,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 10:17:51,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:51,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:17:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 10:17:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-28 10:17:51,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:51,851 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:17:51,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:17:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:51,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:51,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:51,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:17:51,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:51,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:17:51,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:51,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:17:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:17:51,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:51,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:17:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:51,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:51,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:51,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:17:51,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:51,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:17:51,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:51,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:51,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:17:51,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:51,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:17:51,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:51,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 10:17:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:51,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:52,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:52,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 10:17:52,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:52,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 10:17:52,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:52,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:52,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:17:52,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:52,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 10:17:52,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:52,095 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 10:17:52,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52422840] [2020-10-28 10:17:52,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:17:52,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:17:52,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044585409] [2020-10-28 10:17:52,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:17:52,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:17:52,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:17:52,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:17:52,098 INFO L87 Difference]: Start difference. First operand 2158 states and 3294 transitions. Second operand 5 states. [2020-10-28 10:17:52,406 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:17:55,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:17:55,658 INFO L93 Difference]: Finished difference Result 6431 states and 10076 transitions. [2020-10-28 10:17:55,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:17:55,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-10-28 10:17:55,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:17:55,695 INFO L225 Difference]: With dead ends: 6431 [2020-10-28 10:17:55,695 INFO L226 Difference]: Without dead ends: 4279 [2020-10-28 10:17:55,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:17:55,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4279 states. [2020-10-28 10:17:55,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4279 to 4257. [2020-10-28 10:17:55,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4257 states. [2020-10-28 10:17:55,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4257 states to 4257 states and 6576 transitions. [2020-10-28 10:17:55,871 INFO L78 Accepts]: Start accepts. Automaton has 4257 states and 6576 transitions. Word has length 190 [2020-10-28 10:17:55,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:17:55,872 INFO L481 AbstractCegarLoop]: Abstraction has 4257 states and 6576 transitions. [2020-10-28 10:17:55,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:17:55,872 INFO L276 IsEmpty]: Start isEmpty. Operand 4257 states and 6576 transitions. [2020-10-28 10:17:55,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-28 10:17:55,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:17:55,886 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:17:55,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 10:17:55,887 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:17:55,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:17:55,887 INFO L82 PathProgramCache]: Analyzing trace with hash -527691536, now seen corresponding path program 1 times [2020-10-28 10:17:55,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:17:55,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350295400] [2020-10-28 10:17:55,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:17:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:55,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:56,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:56,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:58,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:58,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:58,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-28 10:17:58,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:17:58,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2637 [2020-10-28 10:17:58,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:58,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:58,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:17:58,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 10:17:58,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-28 10:17:58,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:58,927 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:17:58,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:17:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:58,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:58,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:58,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:17:58,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:58,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:17:58,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:58,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:58,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:17:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:17:58,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:59,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:17:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:59,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:59,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:59,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 10:17:59,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:59,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 10:17:59,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:59,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:59,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:17:59,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:59,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 10:17:59,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:59,220 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:17:59,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350295400] [2020-10-28 10:17:59,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:17:59,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:17:59,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684148924] [2020-10-28 10:17:59,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:17:59,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:17:59,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:17:59,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:17:59,224 INFO L87 Difference]: Start difference. First operand 4257 states and 6576 transitions. Second operand 5 states. [2020-10-28 10:17:59,595 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:18:03,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:18:03,360 INFO L93 Difference]: Finished difference Result 8470 states and 13665 transitions. [2020-10-28 10:18:03,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:18:03,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-28 10:18:03,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:18:03,415 INFO L225 Difference]: With dead ends: 8470 [2020-10-28 10:18:03,415 INFO L226 Difference]: Without dead ends: 8467 [2020-10-28 10:18:03,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:18:03,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8467 states. [2020-10-28 10:18:03,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8467 to 5527. [2020-10-28 10:18:03,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5527 states. [2020-10-28 10:18:03,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5527 states to 5527 states and 8745 transitions. [2020-10-28 10:18:03,720 INFO L78 Accepts]: Start accepts. Automaton has 5527 states and 8745 transitions. Word has length 194 [2020-10-28 10:18:03,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:18:03,721 INFO L481 AbstractCegarLoop]: Abstraction has 5527 states and 8745 transitions. [2020-10-28 10:18:03,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:18:03,721 INFO L276 IsEmpty]: Start isEmpty. Operand 5527 states and 8745 transitions. [2020-10-28 10:18:03,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-28 10:18:03,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:18:03,742 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:18:03,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 10:18:03,742 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:18:03,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:18:03,743 INFO L82 PathProgramCache]: Analyzing trace with hash 769640717, now seen corresponding path program 1 times [2020-10-28 10:18:03,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:18:03,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074384972] [2020-10-28 10:18:03,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:18:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:03,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:03,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:05,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:08,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:08,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:08,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-28 10:18:08,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:18:08,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 10:18:08,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:08,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:08,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:08,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 10:18:08,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-28 10:18:08,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:09,169 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:18:09,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:18:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:09,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:09,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:09,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:18:09,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:09,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:18:09,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:09,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:09,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:09,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:09,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:18:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:09,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:09,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:09,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:18:09,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:09,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:18:09,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:09,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:09,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:09,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 10:18:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:09,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:09,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:09,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 10:18:09,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:09,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 10:18:09,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:09,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:09,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:18:09,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:09,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 10:18:09,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:09,491 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 10:18:09,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074384972] [2020-10-28 10:18:09,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:18:09,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:18:09,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249617658] [2020-10-28 10:18:09,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:18:09,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:18:09,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:18:09,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:18:09,500 INFO L87 Difference]: Start difference. First operand 5527 states and 8745 transitions. Second operand 5 states. [2020-10-28 10:18:09,732 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:18:12,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:18:12,335 INFO L93 Difference]: Finished difference Result 13361 states and 21667 transitions. [2020-10-28 10:18:12,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:18:12,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-28 10:18:12,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:18:12,380 INFO L225 Difference]: With dead ends: 13361 [2020-10-28 10:18:12,380 INFO L226 Difference]: Without dead ends: 7840 [2020-10-28 10:18:12,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:18:12,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7840 states. [2020-10-28 10:18:12,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7840 to 7832. [2020-10-28 10:18:12,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7832 states. [2020-10-28 10:18:12,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7832 states to 7832 states and 12353 transitions. [2020-10-28 10:18:12,700 INFO L78 Accepts]: Start accepts. Automaton has 7832 states and 12353 transitions. Word has length 213 [2020-10-28 10:18:12,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:18:12,701 INFO L481 AbstractCegarLoop]: Abstraction has 7832 states and 12353 transitions. [2020-10-28 10:18:12,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:18:12,701 INFO L276 IsEmpty]: Start isEmpty. Operand 7832 states and 12353 transitions. [2020-10-28 10:18:12,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-28 10:18:12,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:18:12,733 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:18:12,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 10:18:12,733 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:18:12,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:18:12,734 INFO L82 PathProgramCache]: Analyzing trace with hash -284157383, now seen corresponding path program 1 times [2020-10-28 10:18:12,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:18:12,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575609316] [2020-10-28 10:18:12,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:18:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:12,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:13,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:13,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:15,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:15,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:15,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-28 10:18:15,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:18:15,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2947 [2020-10-28 10:18:15,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:15,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:15,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:15,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-28 10:18:15,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-28 10:18:15,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:16,065 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:18:16,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:18:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:16,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:16,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:16,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:18:16,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:16,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:18:16,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:16,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:16,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:16,193 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 10:18:16,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:18:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:16,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:16,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:16,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 10:18:16,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:16,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 10:18:16,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:16,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:16,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:18:16,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:16,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 10:18:16,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:16,430 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 88 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:18:16,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575609316] [2020-10-28 10:18:16,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:18:16,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:18:16,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732220079] [2020-10-28 10:18:16,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:18:16,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:18:16,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:18:16,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:18:16,432 INFO L87 Difference]: Start difference. First operand 7832 states and 12353 transitions. Second operand 5 states. [2020-10-28 10:18:16,693 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:18:20,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:18:20,130 INFO L93 Difference]: Finished difference Result 23034 states and 37425 transitions. [2020-10-28 10:18:20,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:18:20,132 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2020-10-28 10:18:20,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:18:20,214 INFO L225 Difference]: With dead ends: 23034 [2020-10-28 10:18:20,214 INFO L226 Difference]: Without dead ends: 15208 [2020-10-28 10:18:20,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:18:20,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15208 states. [2020-10-28 10:18:20,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15208 to 15195. [2020-10-28 10:18:20,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15195 states. [2020-10-28 10:18:20,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15195 states to 15195 states and 23334 transitions. [2020-10-28 10:18:20,928 INFO L78 Accepts]: Start accepts. Automaton has 15195 states and 23334 transitions. Word has length 250 [2020-10-28 10:18:20,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:18:20,928 INFO L481 AbstractCegarLoop]: Abstraction has 15195 states and 23334 transitions. [2020-10-28 10:18:20,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:18:20,928 INFO L276 IsEmpty]: Start isEmpty. Operand 15195 states and 23334 transitions. [2020-10-28 10:18:20,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-28 10:18:20,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:18:20,988 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:18:20,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 10:18:20,988 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:18:20,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:18:20,988 INFO L82 PathProgramCache]: Analyzing trace with hash -577401447, now seen corresponding path program 1 times [2020-10-28 10:18:20,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:18:20,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033619229] [2020-10-28 10:18:20,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:18:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:21,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:21,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:24,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:24,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-28 10:18:24,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:18:24,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2998 [2020-10-28 10:18:24,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:24,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 10:18:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 10:18:24,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:24,328 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:18:24,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:18:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:24,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:24,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:24,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:18:24,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:24,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:18:24,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:24,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:24,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:24,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:24,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:24,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:24,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:18:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:24,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:24,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:24,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:18:24,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:24,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:18:24,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:24,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:24,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:18:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 10:18:24,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:24,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 10:18:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:24,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:24,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:24,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 10:18:24,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:24,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-28 10:18:24,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:24,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:24,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:18:24,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 10:18:24,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:24,895 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:18:24,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033619229] [2020-10-28 10:18:24,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:18:24,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:18:24,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581797666] [2020-10-28 10:18:24,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:18:24,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:18:24,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:18:24,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:18:24,898 INFO L87 Difference]: Start difference. First operand 15195 states and 23334 transitions. Second operand 7 states. [2020-10-28 10:18:25,307 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:18:25,677 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:18:31,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:18:31,764 INFO L93 Difference]: Finished difference Result 42004 states and 72076 transitions. [2020-10-28 10:18:31,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:18:31,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 283 [2020-10-28 10:18:31,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:18:31,969 INFO L225 Difference]: With dead ends: 42004 [2020-10-28 10:18:31,969 INFO L226 Difference]: Without dead ends: 26815 [2020-10-28 10:18:32,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:18:32,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26815 states. [2020-10-28 10:18:33,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26815 to 26459. [2020-10-28 10:18:33,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26459 states. [2020-10-28 10:18:33,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26459 states to 26459 states and 43340 transitions. [2020-10-28 10:18:33,542 INFO L78 Accepts]: Start accepts. Automaton has 26459 states and 43340 transitions. Word has length 283 [2020-10-28 10:18:33,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:18:33,542 INFO L481 AbstractCegarLoop]: Abstraction has 26459 states and 43340 transitions. [2020-10-28 10:18:33,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:18:33,542 INFO L276 IsEmpty]: Start isEmpty. Operand 26459 states and 43340 transitions. [2020-10-28 10:18:33,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-28 10:18:33,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:18:33,697 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:18:33,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 10:18:33,697 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:18:33,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:18:33,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1472296599, now seen corresponding path program 1 times [2020-10-28 10:18:33,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:18:33,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999712350] [2020-10-28 10:18:33,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:18:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:33,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:33,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:35,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:36,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:38,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:38,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-28 10:18:38,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:18:38,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 10:18:38,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:38,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:38,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:18:38,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 10:18:38,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 271 [2020-10-28 10:18:38,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:39,110 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:18:39,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:18:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:39,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:39,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:39,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:18:39,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:39,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:18:39,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:39,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:39,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:39,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:39,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:39,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:39,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:18:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:39,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:39,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:39,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:18:39,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:39,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 10:18:39,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:39,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:18:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:18:39,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:39,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 10:18:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:39,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:39,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:39,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:39,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 10:18:39,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:18:39,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-10-28 10:18:39,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:39,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:39,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:39,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:18:39,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 10:18:39,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 26 proven. 110 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 10:18:39,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999712350] [2020-10-28 10:18:39,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:18:39,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 10:18:39,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217000560] [2020-10-28 10:18:39,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 10:18:39,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:18:39,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 10:18:39,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:18:39,879 INFO L87 Difference]: Start difference. First operand 26459 states and 43340 transitions. Second operand 6 states. [2020-10-28 10:18:40,146 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:18:43,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:18:43,966 INFO L93 Difference]: Finished difference Result 69604 states and 120906 transitions. [2020-10-28 10:18:43,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 10:18:43,967 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 288 [2020-10-28 10:18:43,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:18:44,397 INFO L225 Difference]: With dead ends: 69604 [2020-10-28 10:18:44,397 INFO L226 Difference]: Without dead ends: 43151 [2020-10-28 10:18:44,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:18:44,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43151 states. [2020-10-28 10:18:47,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43151 to 41695. [2020-10-28 10:18:47,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41695 states. [2020-10-28 10:18:47,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41695 states to 41695 states and 65652 transitions. [2020-10-28 10:18:47,211 INFO L78 Accepts]: Start accepts. Automaton has 41695 states and 65652 transitions. Word has length 288 [2020-10-28 10:18:47,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:18:47,211 INFO L481 AbstractCegarLoop]: Abstraction has 41695 states and 65652 transitions. [2020-10-28 10:18:47,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 10:18:47,211 INFO L276 IsEmpty]: Start isEmpty. Operand 41695 states and 65652 transitions. [2020-10-28 10:18:47,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-28 10:18:47,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:18:47,401 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:18:47,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 10:18:47,401 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:18:47,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:18:47,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1521795478, now seen corresponding path program 1 times [2020-10-28 10:18:47,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:18:47,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112652317] [2020-10-28 10:18:47,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:18:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:47,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:47,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:51,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:51,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-28 10:18:51,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:18:51,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3686 [2020-10-28 10:18:51,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:51,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 10:18:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 10:18:51,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:51,449 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:18:51,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:18:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:51,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:51,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:51,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:18:51,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:51,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:18:51,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:51,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:51,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:51,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:51,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:51,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:51,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:18:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:51,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:51,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:51,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:18:51,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:51,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 10:18:51,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:51,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:51,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:18:51,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:51,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 10:18:51,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:51,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 10:18:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:51,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:51,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:51,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 10:18:51,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:51,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-28 10:18:51,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:51,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:51,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:51,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:18:51,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 10:18:51,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:52,137 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:18:52,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112652317] [2020-10-28 10:18:52,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:18:52,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:18:52,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413368508] [2020-10-28 10:18:52,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:18:52,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:18:52,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:18:52,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:18:52,140 INFO L87 Difference]: Start difference. First operand 41695 states and 65652 transitions. Second operand 7 states. [2020-10-28 10:18:52,411 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:18:53,119 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:18:56,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:18:56,774 INFO L93 Difference]: Finished difference Result 73988 states and 112962 transitions. [2020-10-28 10:18:56,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:18:56,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 316 [2020-10-28 10:18:56,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:18:56,933 INFO L225 Difference]: With dead ends: 73988 [2020-10-28 10:18:56,933 INFO L226 Difference]: Without dead ends: 32427 [2020-10-28 10:18:57,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:18:57,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32427 states. [2020-10-28 10:18:58,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32427 to 30980. [2020-10-28 10:18:58,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30980 states. [2020-10-28 10:18:58,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30980 states to 30980 states and 38974 transitions. [2020-10-28 10:18:58,175 INFO L78 Accepts]: Start accepts. Automaton has 30980 states and 38974 transitions. Word has length 316 [2020-10-28 10:18:58,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:18:58,175 INFO L481 AbstractCegarLoop]: Abstraction has 30980 states and 38974 transitions. [2020-10-28 10:18:58,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:18:58,176 INFO L276 IsEmpty]: Start isEmpty. Operand 30980 states and 38974 transitions. [2020-10-28 10:18:58,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-28 10:18:58,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:18:58,236 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:18:58,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 10:18:58,236 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:18:58,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:18:58,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1399607838, now seen corresponding path program 1 times [2020-10-28 10:18:58,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:18:58,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897952129] [2020-10-28 10:18:58,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:18:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:58,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:58,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:58,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:58,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:59,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:03,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:03,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-28 10:19:03,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:19:03,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-28 10:19:03,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:03,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:03,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:19:03,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 10:19:03,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 10:19:03,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:03,658 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:03,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:03,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:03,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:03,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:03,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:03,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:19:03,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:03,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:03,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:03,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:03,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:03,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:03,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:03,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:03,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:03,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:19:03,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:03,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:19:03,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:03,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:03,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:03,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:03,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:03,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:03,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 10:19:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:03,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:03,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:03,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 10:19:03,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:03,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 10:19:03,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:03,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:03,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:03,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:03,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 10:19:03,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:03,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 10:19:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:03,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:03,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:03,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 10:19:03,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:03,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 10:19:03,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:03,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:19:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 10:19:03,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:04,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 10:19:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:04,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:04,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:04,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 10:19:04,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:04,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 10:19:04,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:04,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:19:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 10:19:04,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:04,432 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 251 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 10:19:04,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897952129] [2020-10-28 10:19:04,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:04,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 10:19:04,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79259450] [2020-10-28 10:19:04,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 10:19:04,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:04,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 10:19:04,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-28 10:19:04,434 INFO L87 Difference]: Start difference. First operand 30980 states and 38974 transitions. Second operand 9 states. [2020-10-28 10:19:05,009 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:19:05,432 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:19:08,215 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:19:14,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:14,224 INFO L93 Difference]: Finished difference Result 139153 states and 192924 transitions. [2020-10-28 10:19:14,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 10:19:14,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 337 [2020-10-28 10:19:14,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:14,886 INFO L225 Difference]: With dead ends: 139153 [2020-10-28 10:19:14,887 INFO L226 Difference]: Without dead ends: 108179 [2020-10-28 10:19:15,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-28 10:19:15,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108179 states. [2020-10-28 10:19:19,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108179 to 105070. [2020-10-28 10:19:19,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105070 states. [2020-10-28 10:19:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105070 states to 105070 states and 140600 transitions. [2020-10-28 10:19:19,952 INFO L78 Accepts]: Start accepts. Automaton has 105070 states and 140600 transitions. Word has length 337 [2020-10-28 10:19:19,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:19,953 INFO L481 AbstractCegarLoop]: Abstraction has 105070 states and 140600 transitions. [2020-10-28 10:19:19,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 10:19:19,953 INFO L276 IsEmpty]: Start isEmpty. Operand 105070 states and 140600 transitions. [2020-10-28 10:19:20,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-28 10:19:20,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:20,211 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:19:20,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 10:19:20,211 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:20,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:20,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1944044531, now seen corresponding path program 1 times [2020-10-28 10:19:20,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:20,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083628015] [2020-10-28 10:19:20,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:20,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:20,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:20,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:20,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:20,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:21,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:24,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:25,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:25,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-28 10:19:25,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 10:19:25,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-28 10:19:25,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:25,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:25,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:19:25,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 10:19:25,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-28 10:19:25,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:19:25,703 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:25,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:25,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:25,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:25,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:25,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:25,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 10:19:25,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:25,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:25,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:25,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:25,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:25,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:25,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:25,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:25,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:25,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:19:25,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:25,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:19:25,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:25,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:25,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:25,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 10:19:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:25,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:25,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:25,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 10:19:25,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:25,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:19:25,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:25,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:25,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:25,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:25,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:25,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:25,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 10:19:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:25,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:25,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:25,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:19:25,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:25,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 10:19:25,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:25,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:25,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:25,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:19:25,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:25,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 10:19:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:25,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:25,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:25,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:19:25,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:25,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 10:19:25,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:25,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:25,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:25,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:19:25,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 10:19:25,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:26,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 10:19:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:26,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:26,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:26,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 10:19:26,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:26,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-28 10:19:26,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:26,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:26,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:19:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 10:19:26,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 281 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 10:19:26,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083628015] [2020-10-28 10:19:26,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:26,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:19:26,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299467929] [2020-10-28 10:19:26,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:19:26,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:26,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:19:26,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:19:26,557 INFO L87 Difference]: Start difference. First operand 105070 states and 140600 transitions. Second operand 7 states. [2020-10-28 10:19:27,065 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:19:28,412 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 10:19:35,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:35,946 INFO L93 Difference]: Finished difference Result 223159 states and 324013 transitions. [2020-10-28 10:19:35,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:19:35,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 358 [2020-10-28 10:19:35,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:37,506 INFO L225 Difference]: With dead ends: 223159 [2020-10-28 10:19:37,506 INFO L226 Difference]: Without dead ends: 118103 [2020-10-28 10:19:37,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:19:37,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118103 states. [2020-10-28 10:19:42,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118103 to 113163. [2020-10-28 10:19:42,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113163 states. [2020-10-28 10:19:42,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113163 states to 113163 states and 151376 transitions. [2020-10-28 10:19:42,713 INFO L78 Accepts]: Start accepts. Automaton has 113163 states and 151376 transitions. Word has length 358 [2020-10-28 10:19:42,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:42,713 INFO L481 AbstractCegarLoop]: Abstraction has 113163 states and 151376 transitions. [2020-10-28 10:19:42,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:19:42,714 INFO L276 IsEmpty]: Start isEmpty. Operand 113163 states and 151376 transitions. [2020-10-28 10:19:43,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-28 10:19:43,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:43,336 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:19:43,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 10:19:43,337 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:43,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:43,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1490998649, now seen corresponding path program 1 times [2020-10-28 10:19:43,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:43,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939491100] [2020-10-28 10:19:43,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:43,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:43,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:43,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:43,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:43,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:45,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:48,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:48,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-28 10:19:48,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 10:19:48,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 10:19:48,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:48,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:48,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:48,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-28 10:19:48,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 10:19:48,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:48,765 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:48,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:48,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:48,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:48,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:48,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:48,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:19:48,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:48,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:48,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:48,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:48,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:48,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:48,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:48,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:48,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:48,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:19:48,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:48,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:19:48,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:48,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:48,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:48,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:48,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:48,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:48,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 10:19:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:48,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:48,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:48,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 10:19:48,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:48,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:19:48,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:48,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:48,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:48,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:48,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:48,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:48,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 10:19:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:48,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:48,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:48,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 10:19:48,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:48,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:19:48,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:48,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:48,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:48,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:48,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:48,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:48,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 10:19:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:48,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:48,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:48,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 10:19:48,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:48,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 10:19:48,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:48,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 10:19:48,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:49,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 10:19:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:49,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:49,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:49,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 10:19:49,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:49,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-28 10:19:49,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:49,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:49,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:49,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:19:49,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 10:19:49,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:49,449 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 279 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-28 10:19:49,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939491100] [2020-10-28 10:19:49,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:49,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:19:49,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247667004] [2020-10-28 10:19:49,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:19:49,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:49,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:19:49,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:19:49,452 INFO L87 Difference]: Start difference. First operand 113163 states and 151376 transitions. Second operand 7 states. [2020-10-28 10:19:49,715 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:19:52,405 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:19:55,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:55,696 INFO L93 Difference]: Finished difference Result 251393 states and 343484 transitions. [2020-10-28 10:19:55,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:19:55,697 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 362 [2020-10-28 10:19:55,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:56,618 INFO L225 Difference]: With dead ends: 251393 [2020-10-28 10:19:56,618 INFO L226 Difference]: Without dead ends: 139841 [2020-10-28 10:19:56,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:19:56,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139841 states. [2020-10-28 10:20:00,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139841 to 139065. [2020-10-28 10:20:00,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139065 states. [2020-10-28 10:20:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139065 states to 139065 states and 185809 transitions. [2020-10-28 10:20:01,790 INFO L78 Accepts]: Start accepts. Automaton has 139065 states and 185809 transitions. Word has length 362 [2020-10-28 10:20:01,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:20:01,790 INFO L481 AbstractCegarLoop]: Abstraction has 139065 states and 185809 transitions. [2020-10-28 10:20:01,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:20:01,791 INFO L276 IsEmpty]: Start isEmpty. Operand 139065 states and 185809 transitions. [2020-10-28 10:20:02,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-28 10:20:02,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:20:02,143 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:20:02,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 10:20:02,143 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:20:02,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:20:02,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1781395401, now seen corresponding path program 1 times [2020-10-28 10:20:02,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:20:02,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005818803] [2020-10-28 10:20:02,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:20:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:02,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:03,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:03,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-28 10:20:03,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:03,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1190 [2020-10-28 10:20:03,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:03,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:20:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 10:20:03,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 10:20:03,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:03,822 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:20:03,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:20:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:03,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:03,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:03,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:20:03,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:03,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:20:03,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:03,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:03,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:03,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:03,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:03,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:03,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:20:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:03,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:04,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:04,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 10:20:04,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:04,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 10:20:04,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:04,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:04,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:04,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:04,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 10:20:04,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:04,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 10:20:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:04,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:04,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:04,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 10:20:04,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:04,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-28 10:20:04,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:04,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:04,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:20:04,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:20:04,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 10:20:04,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 304 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:20:04,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005818803] [2020-10-28 10:20:04,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:20:04,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:20:04,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913095501] [2020-10-28 10:20:04,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:20:04,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:20:04,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:20:04,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:20:04,651 INFO L87 Difference]: Start difference. First operand 139065 states and 185809 transitions. Second operand 7 states. [2020-10-28 10:20:05,073 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:20:05,321 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:20:14,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:20:14,386 INFO L93 Difference]: Finished difference Result 275900 states and 390284 transitions. [2020-10-28 10:20:14,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:20:14,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 371 [2020-10-28 10:20:14,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:20:15,153 INFO L225 Difference]: With dead ends: 275900 [2020-10-28 10:20:15,153 INFO L226 Difference]: Without dead ends: 138871 [2020-10-28 10:20:15,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:20:15,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138871 states. [2020-10-28 10:20:19,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138871 to 135469. [2020-10-28 10:20:19,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135469 states. [2020-10-28 10:20:20,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135469 states to 135469 states and 175841 transitions. [2020-10-28 10:20:20,579 INFO L78 Accepts]: Start accepts. Automaton has 135469 states and 175841 transitions. Word has length 371 [2020-10-28 10:20:20,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:20:20,580 INFO L481 AbstractCegarLoop]: Abstraction has 135469 states and 175841 transitions. [2020-10-28 10:20:20,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:20:20,580 INFO L276 IsEmpty]: Start isEmpty. Operand 135469 states and 175841 transitions. [2020-10-28 10:20:20,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-28 10:20:20,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:20:20,869 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:20:20,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 10:20:20,869 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:20:20,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:20:20,870 INFO L82 PathProgramCache]: Analyzing trace with hash -380816655, now seen corresponding path program 1 times [2020-10-28 10:20:20,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:20:20,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760823362] [2020-10-28 10:20:20,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:20:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:20,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:21,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking...