/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:26:06,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:26:06,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:26:06,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:26:06,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:26:06,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:26:06,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:26:06,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:26:06,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:26:06,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:26:06,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:26:06,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:26:06,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:26:06,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:26:06,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:26:06,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:26:06,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:26:06,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:26:06,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:26:06,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:26:06,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:26:06,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:26:06,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:26:06,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:26:06,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:26:06,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:26:06,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:26:06,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:26:06,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:26:06,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:26:06,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:26:06,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:26:06,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:26:06,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:26:06,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:26:06,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:26:06,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:26:06,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:26:06,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:26:06,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:26:06,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:26:06,289 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:26:06,341 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:26:06,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:26:06,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:26:06,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:26:06,348 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:26:06,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:26:06,348 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:26:06,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:26:06,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:26:06,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:26:06,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:26:06,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:26:06,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:26:06,351 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:26:06,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:26:06,352 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:26:06,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:26:06,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:26:06,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:26:06,353 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:26:06,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:26:06,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:26:06,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:26:06,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:26:06,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:26:06,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:26:06,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:26:06,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:26:06,355 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:26:06,355 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:26:06,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:26:06,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:26:06,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:26:06,852 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:26:06,853 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:26:06,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58.c [2020-10-29 08:26:06,944 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca799935e/ead7155ec39d44bca689403b5c0d926b/FLAGc5e75e799 [2020-10-29 08:26:07,832 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:26:07,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label58.c [2020-10-29 08:26:07,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca799935e/ead7155ec39d44bca689403b5c0d926b/FLAGc5e75e799 [2020-10-29 08:26:07,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca799935e/ead7155ec39d44bca689403b5c0d926b [2020-10-29 08:26:07,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:26:07,906 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:26:07,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:26:07,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:26:07,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:26:07,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:26:07" (1/1) ... [2020-10-29 08:26:07,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ef1984b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:26:07, skipping insertion in model container [2020-10-29 08:26:07,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:26:07" (1/1) ... [2020-10-29 08:26:07,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:26:08,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:26:09,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:26:09,237 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:26:09,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:26:09,761 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:26:09,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:26:09 WrapperNode [2020-10-29 08:26:09,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:26:09,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:26:09,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:26:09,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:26:09,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:26:09" (1/1) ... [2020-10-29 08:26:09,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:26:09" (1/1) ... [2020-10-29 08:26:09,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:26:09" (1/1) ... [2020-10-29 08:26:09,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:26:09" (1/1) ... [2020-10-29 08:26:09,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:26:09" (1/1) ... [2020-10-29 08:26:10,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:26:09" (1/1) ... [2020-10-29 08:26:10,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:26:09" (1/1) ... [2020-10-29 08:26:10,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:26:10,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:26:10,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:26:10,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:26:10,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:26:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:26:10,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:26:10,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:26:10,180 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:26:10,181 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:26:10,181 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:26:10,181 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:26:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:26:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:26:10,182 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:26:10,182 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:26:10,182 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:26:10,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:26:10,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:26:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:26:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:26:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:26:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:26:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:26:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:26:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:26:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:26:19,284 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:26:19,284 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:26:19,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:26:19 BoogieIcfgContainer [2020-10-29 08:26:19,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:26:19,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:26:19,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:26:19,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:26:19,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:26:07" (1/3) ... [2020-10-29 08:26:19,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5afa54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:26:19, skipping insertion in model container [2020-10-29 08:26:19,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:26:09" (2/3) ... [2020-10-29 08:26:19,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5afa54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:26:19, skipping insertion in model container [2020-10-29 08:26:19,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:26:19" (3/3) ... [2020-10-29 08:26:19,298 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label58.c [2020-10-29 08:26:19,311 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:26:19,318 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:26:19,333 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:26:19,368 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:26:19,368 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:26:19,368 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:26:19,368 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:26:19,369 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:26:19,369 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:26:19,369 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:26:19,369 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:26:19,403 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:26:19,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 08:26:19,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:26:19,413 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] [2020-10-29 08:26:19,414 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:26:19,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:26:19,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1189231218, now seen corresponding path program 1 times [2020-10-29 08:26:19,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:26:19,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187991996] [2020-10-29 08:26:19,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:26:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:19,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:20,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:20,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 08:26:20,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:26:20,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 708 [2020-10-29 08:26:20,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:20,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:20,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:26:20,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:26:20,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 08:26:20,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:26:20,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:26:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:20,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:20,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:20,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:26:20,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:26:20,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 08:26:20,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:20,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:26:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:26:20,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:26:20,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:26:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:26:20,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187991996] [2020-10-29 08:26:20,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:26:20,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:26:20,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108618747] [2020-10-29 08:26:20,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:26:20,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:26:20,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:26:20,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:26:20,677 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:26:35,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:26:35,156 INFO L93 Difference]: Finished difference Result 1697 states and 3097 transitions. [2020-10-29 08:26:35,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:26:35,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-29 08:26:35,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:26:35,201 INFO L225 Difference]: With dead ends: 1697 [2020-10-29 08:26:35,203 INFO L226 Difference]: Without dead ends: 1013 [2020-10-29 08:26:35,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:26:35,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-29 08:26:35,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1003. [2020-10-29 08:26:35,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-29 08:26:35,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1543 transitions. [2020-10-29 08:26:35,402 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1543 transitions. Word has length 52 [2020-10-29 08:26:35,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:26:35,403 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1543 transitions. [2020-10-29 08:26:35,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:26:35,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1543 transitions. [2020-10-29 08:26:35,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 08:26:35,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:26:35,421 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:26:35,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:26:35,422 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:26:35,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:26:35,424 INFO L82 PathProgramCache]: Analyzing trace with hash 372999698, now seen corresponding path program 1 times [2020-10-29 08:26:35,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:26:35,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066099672] [2020-10-29 08:26:35,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:26:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:35,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:36,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:37,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:37,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 08:26:37,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:26:37,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1683 [2020-10-29 08:26:37,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:37,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:37,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:26:37,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:26:37,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 08:26:37,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:26:37,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:26:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:37,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:37,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:37,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:26:37,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:26:37,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:26:37,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:37,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:37,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:26:37,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:26:37,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:26:37,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:26:37,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:26:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:37,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:37,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:37,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:26:37,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:26:37,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 08:26:37,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:37,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:37,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:26:37,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:26:37,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:26:37,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:26:37,652 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:26:37,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066099672] [2020-10-29 08:26:37,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:26:37,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:26:37,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441123072] [2020-10-29 08:26:37,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:26:37,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:26:37,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:26:37,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:26:37,660 INFO L87 Difference]: Start difference. First operand 1003 states and 1543 transitions. Second operand 7 states. [2020-10-29 08:26:51,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:26:51,992 INFO L93 Difference]: Finished difference Result 2964 states and 4573 transitions. [2020-10-29 08:26:51,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:26:51,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-29 08:26:51,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:26:52,011 INFO L225 Difference]: With dead ends: 2964 [2020-10-29 08:26:52,011 INFO L226 Difference]: Without dead ends: 1967 [2020-10-29 08:26:52,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:26:52,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2020-10-29 08:26:52,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1915. [2020-10-29 08:26:52,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1915 states. [2020-10-29 08:26:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2483 transitions. [2020-10-29 08:26:52,123 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2483 transitions. Word has length 123 [2020-10-29 08:26:52,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:26:52,126 INFO L481 AbstractCegarLoop]: Abstraction has 1915 states and 2483 transitions. [2020-10-29 08:26:52,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:26:52,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2483 transitions. [2020-10-29 08:26:52,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 08:26:52,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:26:52,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:26:52,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:26:52,136 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:26:52,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:26:52,138 INFO L82 PathProgramCache]: Analyzing trace with hash -857425441, now seen corresponding path program 1 times [2020-10-29 08:26:52,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:26:52,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965951454] [2020-10-29 08:26:52,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:26:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:52,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:52,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:53,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:53,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 08:26:53,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:26:53,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1273 [2020-10-29 08:26:53,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:53,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:26:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:26:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 08:26:53,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:26:53,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:26:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:53,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:53,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:53,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:26:53,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:26:53,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:26:53,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:53,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:53,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:26:53,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:26:53,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:26:53,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:26:53,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:26:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:53,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:54,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:54,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:26:54,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:26:54,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-29 08:26:54,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:54,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:54,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:26:54,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:26:54,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 08:26:54,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:26:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 16 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:26:54,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965951454] [2020-10-29 08:26:54,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:26:54,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:26:54,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311213401] [2020-10-29 08:26:54,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:26:54,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:26:54,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:26:54,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:26:54,455 INFO L87 Difference]: Start difference. First operand 1915 states and 2483 transitions. Second operand 8 states. [2020-10-29 08:27:18,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:27:18,286 INFO L93 Difference]: Finished difference Result 4325 states and 5483 transitions. [2020-10-29 08:27:18,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:27:18,296 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2020-10-29 08:27:18,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:27:18,312 INFO L225 Difference]: With dead ends: 4325 [2020-10-29 08:27:18,312 INFO L226 Difference]: Without dead ends: 2385 [2020-10-29 08:27:18,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:27:18,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2020-10-29 08:27:18,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 2354. [2020-10-29 08:27:18,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2354 states. [2020-10-29 08:27:18,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 2934 transitions. [2020-10-29 08:27:18,402 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 2934 transitions. Word has length 126 [2020-10-29 08:27:18,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:27:18,402 INFO L481 AbstractCegarLoop]: Abstraction has 2354 states and 2934 transitions. [2020-10-29 08:27:18,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:27:18,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 2934 transitions. [2020-10-29 08:27:18,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 08:27:18,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:27:18,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:27:18,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:27:18,405 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:27:18,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:27:18,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1215867022, now seen corresponding path program 1 times [2020-10-29 08:27:18,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:27:18,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545686642] [2020-10-29 08:27:18,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:27:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:18,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:18,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:18,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 08:27:18,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:27:18,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-29 08:27:18,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:18,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:18,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:27:18,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:27:18,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 08:27:18,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:27:18,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:27:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:18,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:18,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:18,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:27:18,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:27:18,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:27:18,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:18,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:18,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:27:18,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:27:18,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:27:18,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:27:19,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:27:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:19,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:19,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:19,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:27:19,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:27:19,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-29 08:27:19,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:19,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:19,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:27:19,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:27:19,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:27:19,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:27:19,230 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:27:19,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545686642] [2020-10-29 08:27:19,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:27:19,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:27:19,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017248295] [2020-10-29 08:27:19,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:27:19,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:27:19,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:27:19,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:27:19,246 INFO L87 Difference]: Start difference. First operand 2354 states and 2934 transitions. Second operand 6 states. [2020-10-29 08:27:34,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:27:34,993 INFO L93 Difference]: Finished difference Result 4710 states and 6249 transitions. [2020-10-29 08:27:34,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:27:34,999 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-10-29 08:27:35,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:27:35,016 INFO L225 Difference]: With dead ends: 4710 [2020-10-29 08:27:35,017 INFO L226 Difference]: Without dead ends: 2795 [2020-10-29 08:27:35,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:27:35,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2020-10-29 08:27:35,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 2785. [2020-10-29 08:27:35,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2785 states. [2020-10-29 08:27:35,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 3720 transitions. [2020-10-29 08:27:35,136 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 3720 transitions. Word has length 139 [2020-10-29 08:27:35,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:27:35,138 INFO L481 AbstractCegarLoop]: Abstraction has 2785 states and 3720 transitions. [2020-10-29 08:27:35,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:27:35,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 3720 transitions. [2020-10-29 08:27:35,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-29 08:27:35,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:27:35,145 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, 2, 2, 2, 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] [2020-10-29 08:27:35,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:27:35,145 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:27:35,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:27:35,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1334589166, now seen corresponding path program 1 times [2020-10-29 08:27:35,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:27:35,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087066277] [2020-10-29 08:27:35,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:27:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:35,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:35,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:36,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:38,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:38,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 08:27:38,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:27:38,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3092 [2020-10-29 08:27:38,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:38,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:38,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 08:27:38,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:27:38,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 215 [2020-10-29 08:27:38,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:27:38,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:27:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:38,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:38,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:38,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:27:38,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:27:38,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:27:38,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:38,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:38,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:27:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:27:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:27:38,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:27:38,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:27:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:38,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:38,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:38,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:27:38,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:27:38,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-29 08:27:38,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:38,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:38,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:27:38,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:27:38,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:27:38,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 08:27:39,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:27:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:39,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:39,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:39,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:27:39,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:27:39,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 08:27:39,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:39,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:39,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:27:39,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:27:39,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:27:39,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:27:39,363 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 6 proven. 148 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 08:27:39,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087066277] [2020-10-29 08:27:39,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:27:39,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:27:39,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892865704] [2020-10-29 08:27:39,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:27:39,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:27:39,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:27:39,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:27:39,366 INFO L87 Difference]: Start difference. First operand 2785 states and 3720 transitions. Second operand 9 states. [2020-10-29 08:28:11,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:28:11,745 INFO L93 Difference]: Finished difference Result 8457 states and 11675 transitions. [2020-10-29 08:28:11,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 08:28:11,747 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 210 [2020-10-29 08:28:11,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:28:11,783 INFO L225 Difference]: With dead ends: 8457 [2020-10-29 08:28:11,783 INFO L226 Difference]: Without dead ends: 5645 [2020-10-29 08:28:11,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-29 08:28:11,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5645 states. [2020-10-29 08:28:11,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5645 to 5539. [2020-10-29 08:28:11,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5539 states. [2020-10-29 08:28:12,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5539 states to 5539 states and 7179 transitions. [2020-10-29 08:28:12,005 INFO L78 Accepts]: Start accepts. Automaton has 5539 states and 7179 transitions. Word has length 210 [2020-10-29 08:28:12,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:28:12,006 INFO L481 AbstractCegarLoop]: Abstraction has 5539 states and 7179 transitions. [2020-10-29 08:28:12,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 08:28:12,007 INFO L276 IsEmpty]: Start isEmpty. Operand 5539 states and 7179 transitions. [2020-10-29 08:28:12,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-29 08:28:12,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:28:12,011 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:28:12,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:28:12,012 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:28:12,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:28:12,012 INFO L82 PathProgramCache]: Analyzing trace with hash 931284198, now seen corresponding path program 1 times [2020-10-29 08:28:12,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:28:12,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084097225] [2020-10-29 08:28:12,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:28:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:12,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:12,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:13,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:13,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:14,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:14,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-29 08:28:14,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:28:14,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2632 [2020-10-29 08:28:14,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:14,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:14,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 08:28:14,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:28:14,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-29 08:28:14,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:14,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:28:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:14,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:14,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:14,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:28:14,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:14,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:28:14,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:14,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:14,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:28:14,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:28:14,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:28:14,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:14,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:28:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:15,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:15,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:15,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:28:15,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:15,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-29 08:28:15,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:15,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:28:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:28:15,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:28:15,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:15,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:28:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:15,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:15,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:15,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 08:28:15,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:15,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 08:28:15,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:15,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:15,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:28:15,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:28:15,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 08:28:15,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:28:15,702 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 08:28:15,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084097225] [2020-10-29 08:28:15,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:28:15,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:28:15,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373190286] [2020-10-29 08:28:15,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:28:15,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:28:15,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:28:15,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:28:15,709 INFO L87 Difference]: Start difference. First operand 5539 states and 7179 transitions. Second operand 8 states. [2020-10-29 08:28:15,866 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 08:28:16,758 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-10-29 08:28:49,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:28:49,300 INFO L93 Difference]: Finished difference Result 12640 states and 16544 transitions. [2020-10-29 08:28:49,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:28:49,303 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 216 [2020-10-29 08:28:49,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:28:49,344 INFO L225 Difference]: With dead ends: 12640 [2020-10-29 08:28:49,344 INFO L226 Difference]: Without dead ends: 6653 [2020-10-29 08:28:49,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:28:49,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6653 states. [2020-10-29 08:28:49,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6653 to 6564. [2020-10-29 08:28:49,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6564 states. [2020-10-29 08:28:49,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6564 states to 6564 states and 8443 transitions. [2020-10-29 08:28:49,582 INFO L78 Accepts]: Start accepts. Automaton has 6564 states and 8443 transitions. Word has length 216 [2020-10-29 08:28:49,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:28:49,583 INFO L481 AbstractCegarLoop]: Abstraction has 6564 states and 8443 transitions. [2020-10-29 08:28:49,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:28:49,583 INFO L276 IsEmpty]: Start isEmpty. Operand 6564 states and 8443 transitions. [2020-10-29 08:28:49,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-29 08:28:49,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:28:49,588 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:28:49,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:28:49,589 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:28:49,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:28:49,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1045454976, now seen corresponding path program 1 times [2020-10-29 08:28:49,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:28:49,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139954838] [2020-10-29 08:28:49,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:28:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:49,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:49,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:50,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:50,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-29 08:28:50,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:28:50,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1316 [2020-10-29 08:28:50,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:50,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:50,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:28:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:28:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 08:28:50,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:51,173 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:28:51,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:28:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:51,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:51,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:51,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:28:51,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:51,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:28:51,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:51,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:51,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:28:51,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:28:51,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:28:51,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:51,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:28:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:51,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:51,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:51,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:28:51,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:51,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 08:28:51,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:51,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:51,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:28:51,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:28:51,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:28:51,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:28:51,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:28:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:51,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:51,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:51,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:51,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:28:51,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:28:51,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-29 08:28:51,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:51,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:51,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:28:51,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:28:51,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:28:51,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:28:51,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139954838] [2020-10-29 08:28:51,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:28:51,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:28:51,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806640223] [2020-10-29 08:28:51,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:28:51,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:28:51,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:28:51,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:28:51,764 INFO L87 Difference]: Start difference. First operand 6564 states and 8443 transitions. Second operand 5 states. [2020-10-29 08:28:52,643 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:29:11,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:29:11,357 INFO L93 Difference]: Finished difference Result 12715 states and 16470 transitions. [2020-10-29 08:29:11,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:29:11,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-10-29 08:29:11,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:29:11,399 INFO L225 Difference]: With dead ends: 12715 [2020-10-29 08:29:11,400 INFO L226 Difference]: Without dead ends: 6592 [2020-10-29 08:29:11,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:29:11,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6592 states. [2020-10-29 08:29:11,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6592 to 6129. [2020-10-29 08:29:11,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6129 states. [2020-10-29 08:29:11,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6129 states to 6129 states and 7600 transitions. [2020-10-29 08:29:11,595 INFO L78 Accepts]: Start accepts. Automaton has 6129 states and 7600 transitions. Word has length 225 [2020-10-29 08:29:11,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:29:11,596 INFO L481 AbstractCegarLoop]: Abstraction has 6129 states and 7600 transitions. [2020-10-29 08:29:11,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:29:11,597 INFO L276 IsEmpty]: Start isEmpty. Operand 6129 states and 7600 transitions. [2020-10-29 08:29:11,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-29 08:29:11,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:29:11,604 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:29:11,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:29:11,604 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:29:11,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:29:11,605 INFO L82 PathProgramCache]: Analyzing trace with hash -868195004, now seen corresponding path program 1 times [2020-10-29 08:29:11,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:29:11,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080375114] [2020-10-29 08:29:11,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:29:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:11,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:11,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:12,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:13,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:16,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:16,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-29 08:29:16,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:29:16,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 08:29:16,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:16,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:16,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 08:29:16,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:29:16,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-10-29 08:29:16,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:16,950 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:29:16,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:29:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:16,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:17,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:17,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:29:17,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:17,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 08:29:17,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:17,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:17,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:29:17,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:17,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:29:17,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:29:17,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:29:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:17,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:17,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:17,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:29:17,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:17,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-29 08:29:17,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:17,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:17,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:29:17,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:29:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:29:17,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:29:17,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:29:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:17,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:17,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:17,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:29:17,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:17,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-29 08:29:17,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:17,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:17,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:29:17,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:29:17,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:29:17,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:17,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:29:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:17,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:17,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:17,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:29:17,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:17,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 08:29:17,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:17,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:17,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:29:17,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:29:17,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:29:17,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:29:18,109 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 152 proven. 127 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 08:29:18,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080375114] [2020-10-29 08:29:18,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:29:18,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:29:18,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166630840] [2020-10-29 08:29:18,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:29:18,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:29:18,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:29:18,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:29:18,113 INFO L87 Difference]: Start difference. First operand 6129 states and 7600 transitions. Second operand 9 states. [2020-10-29 08:29:18,306 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:29:19,431 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:29:45,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:29:45,018 INFO L93 Difference]: Finished difference Result 16471 states and 21746 transitions. [2020-10-29 08:29:45,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 08:29:45,021 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 296 [2020-10-29 08:29:45,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:29:45,061 INFO L225 Difference]: With dead ends: 16471 [2020-10-29 08:29:45,061 INFO L226 Difference]: Without dead ends: 9877 [2020-10-29 08:29:45,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-29 08:29:45,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9877 states. [2020-10-29 08:29:45,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9877 to 8824. [2020-10-29 08:29:45,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8824 states. [2020-10-29 08:29:45,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8824 states to 8824 states and 11021 transitions. [2020-10-29 08:29:45,320 INFO L78 Accepts]: Start accepts. Automaton has 8824 states and 11021 transitions. Word has length 296 [2020-10-29 08:29:45,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:29:45,321 INFO L481 AbstractCegarLoop]: Abstraction has 8824 states and 11021 transitions. [2020-10-29 08:29:45,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 08:29:45,321 INFO L276 IsEmpty]: Start isEmpty. Operand 8824 states and 11021 transitions. [2020-10-29 08:29:45,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-29 08:29:45,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:29:45,328 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:29:45,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:29:45,328 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:29:45,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:29:45,329 INFO L82 PathProgramCache]: Analyzing trace with hash -345934952, now seen corresponding path program 1 times [2020-10-29 08:29:45,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:29:45,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681194007] [2020-10-29 08:29:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:29:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:45,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:45,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:46,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:47,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:49,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:49,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:49,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-29 08:29:49,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:29:49,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4260 [2020-10-29 08:29:49,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:49,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:49,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:29:49,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:29:49,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 08:29:49,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:49,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:29:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:49,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:49,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:49,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:29:49,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:49,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:29:49,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:49,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:49,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:29:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:29:49,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:49,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:29:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:49,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:50,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:50,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:29:50,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:50,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 08:29:50,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:50,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:50,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:29:50,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:50,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:29:50,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:50,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:29:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:50,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:50,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:50,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:50,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:29:50,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:29:50,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-29 08:29:50,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:50,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:50,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:29:50,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:50,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:29:50,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:50,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:29:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:50,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:50,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:50,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 08:29:50,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:50,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 08:29:50,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:50,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:50,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:29:50,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:29:50,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 08:29:50,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:50,633 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 280 proven. 4 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-29 08:29:50,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681194007] [2020-10-29 08:29:50,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:29:50,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:29:50,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263062471] [2020-10-29 08:29:50,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:29:50,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:29:50,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:29:50,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:29:50,637 INFO L87 Difference]: Start difference. First operand 8824 states and 11021 transitions. Second operand 7 states. [2020-10-29 08:29:51,598 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 66