/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:32:59,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:32:59,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:32:59,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:32:59,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:32:59,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:32:59,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:32:59,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:32:59,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:32:59,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:32:59,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:32:59,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:32:59,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:32:59,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:32:59,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:32:59,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:32:59,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:32:59,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:32:59,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:32:59,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:32:59,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:32:59,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:32:59,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:32:59,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:32:59,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:32:59,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:32:59,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:32:59,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:32:59,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:32:59,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:32:59,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:32:59,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:32:59,341 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:32:59,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:32:59,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:32:59,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:32:59,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:32:59,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:32:59,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:32:59,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:32:59,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:32:59,355 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:32:59,418 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:32:59,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:32:59,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:32:59,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:32:59,421 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:32:59,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:32:59,422 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:32:59,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:32:59,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:32:59,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:32:59,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:32:59,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:32:59,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:32:59,424 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:32:59,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:32:59,424 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:32:59,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:32:59,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:32:59,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:32:59,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:32:59,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:32:59,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:32:59,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:32:59,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:32:59,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:32:59,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:32:59,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:32:59,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:32:59,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:32:59,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:32:59,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:32:59,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:32:59,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:32:59,861 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:32:59,862 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:32:59,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label14.c [2020-10-28 13:32:59,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba3db5264/327e8d1a64fc4c35ad723ab40be81fb0/FLAGd337a9411 [2020-10-28 13:33:00,918 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:33:00,918 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label14.c [2020-10-28 13:33:00,956 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba3db5264/327e8d1a64fc4c35ad723ab40be81fb0/FLAGd337a9411 [2020-10-28 13:33:01,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba3db5264/327e8d1a64fc4c35ad723ab40be81fb0 [2020-10-28 13:33:01,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:33:01,429 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:33:01,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:33:01,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:33:01,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:33:01,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:33:01" (1/1) ... [2020-10-28 13:33:01,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a6891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:01, skipping insertion in model container [2020-10-28 13:33:01,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:33:01" (1/1) ... [2020-10-28 13:33:01,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:33:01,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:33:02,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:33:02,492 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:33:03,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:33:03,029 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:33:03,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:03 WrapperNode [2020-10-28 13:33:03,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:33:03,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:33:03,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:33:03,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:33:03,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:03" (1/1) ... [2020-10-28 13:33:03,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:03" (1/1) ... [2020-10-28 13:33:03,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:03" (1/1) ... [2020-10-28 13:33:03,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:03" (1/1) ... [2020-10-28 13:33:03,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:03" (1/1) ... [2020-10-28 13:33:03,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:03" (1/1) ... [2020-10-28 13:33:03,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:03" (1/1) ... [2020-10-28 13:33:03,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:33:03,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:33:03,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:33:03,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:33:03,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:33:03,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:33:03,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:33:03,467 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:33:03,467 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:33:03,468 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:33:03,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:33:03,468 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:33:03,468 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:33:03,468 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:33:03,468 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:33:03,469 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:33:03,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:33:03,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:33:03,470 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:33:03,470 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:33:03,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:33:03,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:33:03,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:33:03,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:33:03,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:33:03,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:33:13,201 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:33:13,203 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:33:13,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:33:13 BoogieIcfgContainer [2020-10-28 13:33:13,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:33:13,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:33:13,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:33:13,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:33:13,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:33:01" (1/3) ... [2020-10-28 13:33:13,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a913c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:33:13, skipping insertion in model container [2020-10-28 13:33:13,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:03" (2/3) ... [2020-10-28 13:33:13,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a913c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:33:13, skipping insertion in model container [2020-10-28 13:33:13,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:33:13" (3/3) ... [2020-10-28 13:33:13,216 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label14.c [2020-10-28 13:33:13,227 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:33:13,238 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:33:13,251 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:33:13,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:33:13,299 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:33:13,299 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:33:13,299 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:33:13,299 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:33:13,299 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:33:13,300 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:33:13,300 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:33:13,330 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-28 13:33:13,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 13:33:13,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:33:13,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:33:13,340 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:33:13,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:33:13,346 INFO L82 PathProgramCache]: Analyzing trace with hash 357539482, now seen corresponding path program 1 times [2020-10-28 13:33:13,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:33:13,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103862382] [2020-10-28 13:33:13,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:33:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:13,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:14,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:14,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 13:33:14,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:14,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-28 13:33:14,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:14,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:14,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:33:14,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:33:14,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 13:33:14,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:33:14,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:33:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:14,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:14,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:14,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:33:14,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:14,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:33:14,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:14,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:14,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:33:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:33:14,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:33:14,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:33:14,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103862382] [2020-10-28 13:33:14,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:33:14,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:33:14,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184105087] [2020-10-28 13:33:14,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:33:14,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:33:14,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:33:14,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:33:14,370 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-28 13:33:29,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:33:29,373 INFO L93 Difference]: Finished difference Result 1721 states and 3132 transitions. [2020-10-28 13:33:29,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:33:29,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-28 13:33:29,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:33:29,415 INFO L225 Difference]: With dead ends: 1721 [2020-10-28 13:33:29,416 INFO L226 Difference]: Without dead ends: 1035 [2020-10-28 13:33:29,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:33:29,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2020-10-28 13:33:29,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1009. [2020-10-28 13:33:29,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-10-28 13:33:29,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1706 transitions. [2020-10-28 13:33:29,599 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1706 transitions. Word has length 54 [2020-10-28 13:33:29,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:33:29,601 INFO L481 AbstractCegarLoop]: Abstraction has 1009 states and 1706 transitions. [2020-10-28 13:33:29,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:33:29,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1706 transitions. [2020-10-28 13:33:29,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 13:33:29,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:33:29,617 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:33:29,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:33:29,617 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:33:29,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:33:29,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1342805378, now seen corresponding path program 1 times [2020-10-28 13:33:29,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:33:29,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699434127] [2020-10-28 13:33:29,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:33:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:29,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:30,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:30,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:30,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 13:33:30,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:33:30,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1270 [2020-10-28 13:33:30,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:30,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:30,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:33:30,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:33:30,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:33:30,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:33:31,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:33:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:31,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:31,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:31,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:33:31,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:31,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:33:31,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:31,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:31,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:33:31,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:31,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:33:31,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:33:31,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:33:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:31,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:31,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:31,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:33:31,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:31,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-28 13:33:31,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:31,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:31,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:33:31,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:33:31,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:33:31,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:31,576 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:33:31,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699434127] [2020-10-28 13:33:31,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:33:31,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:33:31,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333717934] [2020-10-28 13:33:31,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:33:31,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:33:31,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:33:31,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:33:31,584 INFO L87 Difference]: Start difference. First operand 1009 states and 1706 transitions. Second operand 7 states. [2020-10-28 13:33:31,745 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:33:37,446 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:33:48,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:33:48,717 INFO L93 Difference]: Finished difference Result 2980 states and 5071 transitions. [2020-10-28 13:33:48,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:33:48,718 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-28 13:33:48,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:33:48,730 INFO L225 Difference]: With dead ends: 2980 [2020-10-28 13:33:48,730 INFO L226 Difference]: Without dead ends: 1977 [2020-10-28 13:33:48,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:33:48,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2020-10-28 13:33:48,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1928. [2020-10-28 13:33:48,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1928 states. [2020-10-28 13:33:48,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 2851 transitions. [2020-10-28 13:33:48,792 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 2851 transitions. Word has length 123 [2020-10-28 13:33:48,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:33:48,793 INFO L481 AbstractCegarLoop]: Abstraction has 1928 states and 2851 transitions. [2020-10-28 13:33:48,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:33:48,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 2851 transitions. [2020-10-28 13:33:48,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 13:33:48,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:33:48,795 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:33:48,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:33:48,796 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:33:48,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:33:48,796 INFO L82 PathProgramCache]: Analyzing trace with hash 158808202, now seen corresponding path program 1 times [2020-10-28 13:33:48,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:33:48,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975119363] [2020-10-28 13:33:48,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:33:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:48,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:49,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:49,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:49,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:49,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:33:49,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:33:49,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-10-28 13:33:49,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:49,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:33:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:33:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 13:33:49,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:50,064 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:33:50,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:33:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:50,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:50,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:50,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:33:50,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:50,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:33:50,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:50,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:50,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:33:50,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:50,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:33:50,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:50,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:33:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:50,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:50,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:50,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:33:50,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:50,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-28 13:33:50,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:50,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:50,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:33:50,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:33:50,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:33:50,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:50,413 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:33:50,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975119363] [2020-10-28 13:33:50,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:33:50,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:33:50,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947673023] [2020-10-28 13:33:50,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:33:50,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:33:50,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:33:50,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:33:50,418 INFO L87 Difference]: Start difference. First operand 1928 states and 2851 transitions. Second operand 7 states. [2020-10-28 13:33:52,165 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:34:05,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:34:05,545 INFO L93 Difference]: Finished difference Result 4379 states and 6824 transitions. [2020-10-28 13:34:05,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:34:05,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-28 13:34:05,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:34:05,564 INFO L225 Difference]: With dead ends: 4379 [2020-10-28 13:34:05,564 INFO L226 Difference]: Without dead ends: 2457 [2020-10-28 13:34:05,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:34:05,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2020-10-28 13:34:05,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 1920. [2020-10-28 13:34:05,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-10-28 13:34:05,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2640 transitions. [2020-10-28 13:34:05,651 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2640 transitions. Word has length 133 [2020-10-28 13:34:05,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:34:05,651 INFO L481 AbstractCegarLoop]: Abstraction has 1920 states and 2640 transitions. [2020-10-28 13:34:05,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:34:05,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2640 transitions. [2020-10-28 13:34:05,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-28 13:34:05,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:34:05,654 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:34:05,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:34:05,655 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:34:05,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:34:05,656 INFO L82 PathProgramCache]: Analyzing trace with hash 935637406, now seen corresponding path program 1 times [2020-10-28 13:34:05,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:34:05,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377551030] [2020-10-28 13:34:05,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:34:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:05,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:06,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:07,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:07,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:07,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:34:07,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:34:07,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1439 [2020-10-28 13:34:07,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:07,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:07,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:34:07,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:34:07,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:34:07,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:34:07,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:34:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:07,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:07,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:07,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:34:07,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:07,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:34:07,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:07,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:07,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:34:07,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:07,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:34:07,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:34:07,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:34:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:07,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:07,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:07,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:34:07,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:07,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-28 13:34:07,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:07,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:34:07,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:07,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:34:07,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:34:07,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:34:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:07,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:07,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:07,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:34:07,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:07,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:34:07,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:07,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:07,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:34:07,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:34:07,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:34:07,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:34:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 110 proven. 46 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:34:07,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377551030] [2020-10-28 13:34:07,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:34:07,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:34:07,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134584816] [2020-10-28 13:34:07,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:34:07,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:34:07,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:34:07,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:34:07,806 INFO L87 Difference]: Start difference. First operand 1920 states and 2640 transitions. Second operand 6 states. [2020-10-28 13:34:08,507 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:34:23,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:34:23,436 INFO L93 Difference]: Finished difference Result 5691 states and 7913 transitions. [2020-10-28 13:34:23,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:34:23,443 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 210 [2020-10-28 13:34:23,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:34:23,459 INFO L225 Difference]: With dead ends: 5691 [2020-10-28 13:34:23,459 INFO L226 Difference]: Without dead ends: 2882 [2020-10-28 13:34:23,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:34:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2020-10-28 13:34:23,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2855. [2020-10-28 13:34:23,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2855 states. [2020-10-28 13:34:23,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2855 states to 2855 states and 3669 transitions. [2020-10-28 13:34:23,558 INFO L78 Accepts]: Start accepts. Automaton has 2855 states and 3669 transitions. Word has length 210 [2020-10-28 13:34:23,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:34:23,559 INFO L481 AbstractCegarLoop]: Abstraction has 2855 states and 3669 transitions. [2020-10-28 13:34:23,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:34:23,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2855 states and 3669 transitions. [2020-10-28 13:34:23,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-28 13:34:23,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:34:23,564 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:34:23,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:34:23,564 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:34:23,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:34:23,565 INFO L82 PathProgramCache]: Analyzing trace with hash 514079247, now seen corresponding path program 1 times [2020-10-28 13:34:23,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:34:23,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055837996] [2020-10-28 13:34:23,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:34:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:23,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:23,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:25,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:25,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-28 13:34:25,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:34:25,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1394 [2020-10-28 13:34:25,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:25,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:25,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:34:25,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:34:25,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:34:25,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:34:25,183 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:34:25,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:34:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:25,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:25,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:25,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:34:25,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:25,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:34:25,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:25,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:25,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:34:25,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:25,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:34:25,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:34:25,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:34:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:25,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:25,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:25,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:34:25,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:25,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 13:34:25,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:25,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:25,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:34:25,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:25,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:34:25,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:34:25,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:34:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:25,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:25,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:25,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:34:25,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:25,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-28 13:34:25,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:25,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:25,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:34:25,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:34:25,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:34:25,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:34:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:34:25,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055837996] [2020-10-28 13:34:25,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:34:25,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:34:25,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804057201] [2020-10-28 13:34:25,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:34:25,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:34:25,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:34:25,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:34:25,655 INFO L87 Difference]: Start difference. First operand 2855 states and 3669 transitions. Second operand 7 states. [2020-10-28 13:34:26,496 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:34:31,906 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:34:41,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:34:41,344 INFO L93 Difference]: Finished difference Result 7573 states and 10151 transitions. [2020-10-28 13:34:41,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:34:41,345 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2020-10-28 13:34:41,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:34:41,368 INFO L225 Difference]: With dead ends: 7573 [2020-10-28 13:34:41,369 INFO L226 Difference]: Without dead ends: 4724 [2020-10-28 13:34:41,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:34:41,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4724 states. [2020-10-28 13:34:41,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4724 to 4703. [2020-10-28 13:34:41,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4703 states. [2020-10-28 13:34:41,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4703 states to 4703 states and 6041 transitions. [2020-10-28 13:34:41,493 INFO L78 Accepts]: Start accepts. Automaton has 4703 states and 6041 transitions. Word has length 211 [2020-10-28 13:34:41,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:34:41,494 INFO L481 AbstractCegarLoop]: Abstraction has 4703 states and 6041 transitions. [2020-10-28 13:34:41,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:34:41,494 INFO L276 IsEmpty]: Start isEmpty. Operand 4703 states and 6041 transitions. [2020-10-28 13:34:41,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-28 13:34:41,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:34:41,498 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-28 13:34:41,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:34:41,498 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:34:41,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:34:41,499 INFO L82 PathProgramCache]: Analyzing trace with hash -344600462, now seen corresponding path program 1 times [2020-10-28 13:34:41,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:34:41,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400738204] [2020-10-28 13:34:41,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:34:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:41,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:41,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:42,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:45,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:45,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-28 13:34:45,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:34:45,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4207 [2020-10-28 13:34:45,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:45,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:45,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:34:45,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:34:45,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 13:34:45,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:34:46,014 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:34:46,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:34:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:46,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:46,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:46,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:34:46,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:46,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:34:46,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:46,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:34:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:34:46,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:34:46,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:34:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:46,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:46,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:46,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:34:46,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:46,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:34:46,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:46,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:34:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:34:46,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:34:46,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:34:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:46,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:46,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:46,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:34:46,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 13:34:46,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:46,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:34:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:34:46,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:34:46,374 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:34:46,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400738204] [2020-10-28 13:34:46,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:34:46,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:34:46,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241776321] [2020-10-28 13:34:46,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:34:46,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:34:46,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:34:46,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:34:46,380 INFO L87 Difference]: Start difference. First operand 4703 states and 6041 transitions. Second operand 5 states. [2020-10-28 13:34:46,554 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:35:02,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:35:02,870 INFO L93 Difference]: Finished difference Result 11704 states and 15359 transitions. [2020-10-28 13:35:02,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:35:02,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-28 13:35:02,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:35:02,906 INFO L225 Difference]: With dead ends: 11704 [2020-10-28 13:35:02,906 INFO L226 Difference]: Without dead ends: 7007 [2020-10-28 13:35:02,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:35:02,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7007 states. [2020-10-28 13:35:03,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7007 to 6967. [2020-10-28 13:35:03,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6967 states. [2020-10-28 13:35:03,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6967 states to 6967 states and 9168 transitions. [2020-10-28 13:35:03,133 INFO L78 Accepts]: Start accepts. Automaton has 6967 states and 9168 transitions. Word has length 216 [2020-10-28 13:35:03,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:35:03,134 INFO L481 AbstractCegarLoop]: Abstraction has 6967 states and 9168 transitions. [2020-10-28 13:35:03,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:35:03,134 INFO L276 IsEmpty]: Start isEmpty. Operand 6967 states and 9168 transitions. [2020-10-28 13:35:03,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-28 13:35:03,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:35:03,141 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:35:03,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:35:03,142 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:35:03,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:35:03,142 INFO L82 PathProgramCache]: Analyzing trace with hash 2021884665, now seen corresponding path program 1 times [2020-10-28 13:35:03,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:35:03,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100076508] [2020-10-28 13:35:03,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:35:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:03,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:03,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:05,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:07,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:07,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-28 13:35:07,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:35:07,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4198 [2020-10-28 13:35:07,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:07,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:07,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:35:07,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-28 13:35:07,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 13:35:07,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:35:07,731 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:35:07,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:35:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:07,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:07,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:07,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:35:07,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:07,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:35:07,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:07,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:07,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:35:07,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:07,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:35:07,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:35:07,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:35:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:07,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:07,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:07,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:35:07,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:07,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 13:35:07,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:07,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:07,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:35:07,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:07,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:35:07,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:35:07,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:35:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:07,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:08,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:08,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 13:35:08,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:08,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 13:35:08,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:08,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:08,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:35:08,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:08,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 13:35:08,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:08,261 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 13:35:08,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100076508] [2020-10-28 13:35:08,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:35:08,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:35:08,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591857239] [2020-10-28 13:35:08,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:35:08,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:35:08,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:35:08,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:35:08,266 INFO L87 Difference]: Start difference. First operand 6967 states and 9168 transitions. Second operand 5 states. [2020-10-28 13:35:08,440 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:35:26,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:35:26,274 INFO L93 Difference]: Finished difference Result 19766 states and 26853 transitions. [2020-10-28 13:35:26,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:35:26,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 282 [2020-10-28 13:35:26,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:35:26,328 INFO L225 Difference]: With dead ends: 19766 [2020-10-28 13:35:26,328 INFO L226 Difference]: Without dead ends: 12805 [2020-10-28 13:35:26,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:35:26,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12805 states. [2020-10-28 13:35:26,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12805 to 11909. [2020-10-28 13:35:26,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11909 states. [2020-10-28 13:35:26,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11909 states to 11909 states and 16054 transitions. [2020-10-28 13:35:26,707 INFO L78 Accepts]: Start accepts. Automaton has 11909 states and 16054 transitions. Word has length 282 [2020-10-28 13:35:26,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:35:26,708 INFO L481 AbstractCegarLoop]: Abstraction has 11909 states and 16054 transitions. [2020-10-28 13:35:26,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:35:26,708 INFO L276 IsEmpty]: Start isEmpty. Operand 11909 states and 16054 transitions. [2020-10-28 13:35:26,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-28 13:35:26,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:35:26,719 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:35:26,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:35:26,720 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:35:26,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:35:26,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1018321489, now seen corresponding path program 1 times [2020-10-28 13:35:26,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:35:26,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302414494] [2020-10-28 13:35:26,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:35:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:26,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:26,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:28,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:31,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:31,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-28 13:35:31,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:35:31,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4576 [2020-10-28 13:35:31,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:31,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:31,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:35:31,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:35:31,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 13:35:31,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:35:31,601 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:35:31,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:35:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:31,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:31,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:31,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:35:31,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:31,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:35:31,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:31,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:31,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:35:31,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:31,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:35:31,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:35:31,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:35:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:31,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:31,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:31,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:35:31,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:31,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:35:31,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:31,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:31,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:35:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:35:31,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:35:31,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:35:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:31,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:31,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:31,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:35:31,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:31,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 13:35:31,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:31,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:31,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:35:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:35:31,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:35:31,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:35:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:32,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:32,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:32,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:35:32,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:32,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 13:35:32,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:32,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:35:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:35:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:35:32,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:35:32,333 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 289 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 13:35:32,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302414494] [2020-10-28 13:35:32,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:35:32,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:35:32,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562418119] [2020-10-28 13:35:32,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:35:32,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:35:32,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:35:32,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:35:32,343 INFO L87 Difference]: Start difference. First operand 11909 states and 16054 transitions. Second operand 7 states. [2020-10-28 13:35:36,192 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:35:37,514 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:35:52,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:35:52,113 INFO L93 Difference]: Finished difference Result 29947 states and 43335 transitions. [2020-10-28 13:35:52,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:35:52,115 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 303 [2020-10-28 13:35:52,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:35:52,210 INFO L225 Difference]: With dead ends: 29947 [2020-10-28 13:35:52,210 INFO L226 Difference]: Without dead ends: 17098 [2020-10-28 13:35:52,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:35:52,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17098 states. [2020-10-28 13:35:52,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17098 to 16938. [2020-10-28 13:35:52,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16938 states. [2020-10-28 13:35:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16938 states to 16938 states and 21946 transitions. [2020-10-28 13:35:52,761 INFO L78 Accepts]: Start accepts. Automaton has 16938 states and 21946 transitions. Word has length 303 [2020-10-28 13:35:52,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:35:52,762 INFO L481 AbstractCegarLoop]: Abstraction has 16938 states and 21946 transitions. [2020-10-28 13:35:52,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:35:52,762 INFO L276 IsEmpty]: Start isEmpty. Operand 16938 states and 21946 transitions. [2020-10-28 13:35:52,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-28 13:35:52,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:35:52,774 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:35:52,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:35:52,774 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:35:52,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:35:52,775 INFO L82 PathProgramCache]: Analyzing trace with hash -396942843, now seen corresponding path program 1 times [2020-10-28 13:35:52,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:35:52,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161171763] [2020-10-28 13:35:52,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:35:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:53,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:53,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:55,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:55,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-28 13:35:55,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:35:55,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2515 [2020-10-28 13:35:55,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:55,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:55,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:35:55,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:35:55,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:35:55,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:35:55,691 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:35:55,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:35:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:55,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:55,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:55,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:35:55,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:55,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:35:55,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:55,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:55,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:35:55,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:55,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:35:55,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:35:55,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:35:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:55,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:55,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:55,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:35:55,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:55,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:35:55,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:55,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:55,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:35:55,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:55,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:35:55,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:55,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:35:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:55,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:55,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:55,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:35:55,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:55,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 13:35:55,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:55,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:55,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:35:55,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:55,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:35:55,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:55,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:35:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:56,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:56,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:56,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 13:35:56,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:56,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-28 13:35:56,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:56,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:56,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:35:56,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:35:56,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 13:35:56,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:56,535 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 13:35:56,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161171763] [2020-10-28 13:35:56,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:35:56,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:35:56,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3434465] [2020-10-28 13:35:56,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:35:56,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:35:56,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:35:56,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:35:56,538 INFO L87 Difference]: Start difference. First operand 16938 states and 21946 transitions. Second operand 7 states. [2020-10-28 13:35:58,194 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 13:36:04,150 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-28 13:36:17,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:36:17,074 INFO L93 Difference]: Finished difference Result 45497 states and 60019 transitions. [2020-10-28 13:36:17,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:36:17,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 330 [2020-10-28 13:36:17,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:36:17,159 INFO L225 Difference]: With dead ends: 45497 [2020-10-28 13:36:17,159 INFO L226 Difference]: Without dead ends: 26269 [2020-10-28 13:36:17,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:36:17,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26269 states. [2020-10-28 13:36:17,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26269 to 26201. [2020-10-28 13:36:17,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26201 states. [2020-10-28 13:36:17,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26201 states to 26201 states and 33443 transitions. [2020-10-28 13:36:17,842 INFO L78 Accepts]: Start accepts. Automaton has 26201 states and 33443 transitions. Word has length 330 [2020-10-28 13:36:17,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:36:17,843 INFO L481 AbstractCegarLoop]: Abstraction has 26201 states and 33443 transitions. [2020-10-28 13:36:17,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:36:17,843 INFO L276 IsEmpty]: Start isEmpty. Operand 26201 states and 33443 transitions. [2020-10-28 13:36:17,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-28 13:36:17,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:36:17,855 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:36:17,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:36:17,856 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:36:17,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:36:17,856 INFO L82 PathProgramCache]: Analyzing trace with hash 2007925894, now seen corresponding path program 1 times [2020-10-28 13:36:17,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:36:17,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669668255] [2020-10-28 13:36:17,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:36:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:18,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:18,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:18,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:20,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:22,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:22,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-28 13:36:22,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:36:22,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 13:36:22,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:22,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:22,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:36:22,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-28 13:36:22,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:36:22,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:23,162 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:36:23,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:36:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:23,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:23,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:23,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:36:23,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:23,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:36:23,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:23,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:23,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:36:23,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:23,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:36:23,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:23,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:36:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:23,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:23,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:23,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:36:23,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:23,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:36:23,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:23,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:36:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:36:23,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:23,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:36:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:23,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:23,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:23,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 13:36:23,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:23,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 13:36:23,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:23,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:23,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:36:23,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:23,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 13:36:23,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:23,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-28 13:36:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:23,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:23,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:23,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:36:23,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:23,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 13:36:23,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:23,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:23,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:36:23,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:36:23,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:36:23,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:23,688 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 285 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:36:23,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669668255] [2020-10-28 13:36:23,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:36:23,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:36:23,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23668350] [2020-10-28 13:36:23,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:36:23,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:36:23,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:36:23,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:36:23,690 INFO L87 Difference]: Start difference. First operand 26201 states and 33443 transitions. Second operand 7 states. [2020-10-28 13:36:27,764 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:36:28,380 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:36:42,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:36:42,689 INFO L93 Difference]: Finished difference Result 67834 states and 88555 transitions. [2020-10-28 13:36:42,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:36:42,691 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 356 [2020-10-28 13:36:42,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:36:42,822 INFO L225 Difference]: With dead ends: 67834 [2020-10-28 13:36:42,823 INFO L226 Difference]: Without dead ends: 40735 [2020-10-28 13:36:42,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:36:42,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40735 states. [2020-10-28 13:36:43,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40735 to 37206. [2020-10-28 13:36:43,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37206 states. [2020-10-28 13:36:43,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37206 states to 37206 states and 46713 transitions. [2020-10-28 13:36:43,932 INFO L78 Accepts]: Start accepts. Automaton has 37206 states and 46713 transitions. Word has length 356 [2020-10-28 13:36:43,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:36:43,932 INFO L481 AbstractCegarLoop]: Abstraction has 37206 states and 46713 transitions. [2020-10-28 13:36:43,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:36:43,932 INFO L276 IsEmpty]: Start isEmpty. Operand 37206 states and 46713 transitions. [2020-10-28 13:36:43,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-10-28 13:36:43,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:36:43,947 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:36:43,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:36:43,947 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:36:43,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:36:43,949 INFO L82 PathProgramCache]: Analyzing trace with hash 2133793190, now seen corresponding path program 1 times [2020-10-28 13:36:43,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:36:43,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800085421] [2020-10-28 13:36:43,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:36:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:44,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:44,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:44,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:49,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:49,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-28 13:36:49,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:36:49,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-28 13:36:49,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:49,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:49,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:36:49,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-28 13:36:49,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:36:49,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:49,262 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:36:49,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:36:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:49,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:49,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:49,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:36:49,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:49,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:36:49,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:49,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:49,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:36:49,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:49,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:36:49,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:49,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:36:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:49,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:49,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:49,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:36:49,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:49,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:36:49,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:49,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:49,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:36:49,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:49,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:36:49,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:49,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:36:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:49,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:49,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:49,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 13:36:49,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:49,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 13:36:49,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:49,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:36:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:36:49,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:49,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-28 13:36:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:49,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:49,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:49,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:36:49,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:49,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 13:36:49,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:49,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:49,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:36:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:36:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 13:36:49,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:49,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-28 13:36:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:49,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:49,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:49,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:36:49,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:49,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:36:49,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:49,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:49,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:36:49,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 13:36:49,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:36:49,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:49,900 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 352 proven. 75 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2020-10-28 13:36:49,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800085421] [2020-10-28 13:36:49,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:36:49,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:36:49,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784093203] [2020-10-28 13:36:49,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:36:49,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:36:49,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:36:49,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:36:49,903 INFO L87 Difference]: Start difference. First operand 37206 states and 46713 transitions. Second operand 7 states. [2020-10-28 13:36:51,600 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 66