/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:48:31,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:48:31,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:48:31,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:48:31,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:48:31,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:48:31,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:48:31,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:48:31,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:48:31,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:48:31,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:48:31,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:48:31,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:48:31,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:48:31,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:48:31,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:48:31,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:48:31,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:48:31,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:48:31,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:48:31,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:48:31,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:48:31,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:48:31,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:48:31,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:48:31,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:48:31,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:48:31,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:48:31,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:48:31,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:48:31,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:48:31,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:48:31,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:48:31,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:48:31,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:48:31,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:48:31,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:48:31,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:48:31,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:48:31,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:48:31,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:48:31,285 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:48:31,336 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:48:31,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:48:31,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:48:31,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:48:31,338 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:48:31,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:48:31,339 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:48:31,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:48:31,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:48:31,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:48:31,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:48:31,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:48:31,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:48:31,340 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:48:31,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:48:31,341 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:48:31,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:48:31,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:48:31,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:48:31,341 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:48:31,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:48:31,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:48:31,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:48:31,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:48:31,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:48:31,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:48:31,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:48:31,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:48:31,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:48:31,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:48:31,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:48:31,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:48:31,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:48:31,781 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:48:31,782 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:48:31,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label35.c [2020-10-29 07:48:31,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ad36b50c/3b20d8c6a1a349428b0d9c4cd240991e/FLAGee4faa500 [2020-10-29 07:48:32,969 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:48:32,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label35.c [2020-10-29 07:48:33,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ad36b50c/3b20d8c6a1a349428b0d9c4cd240991e/FLAGee4faa500 [2020-10-29 07:48:33,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ad36b50c/3b20d8c6a1a349428b0d9c4cd240991e [2020-10-29 07:48:33,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:48:33,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:48:33,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:48:33,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:48:33,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:48:33,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:48:33" (1/1) ... [2020-10-29 07:48:33,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dceafc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:33, skipping insertion in model container [2020-10-29 07:48:33,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:48:33" (1/1) ... [2020-10-29 07:48:33,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:48:33,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:48:34,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:48:34,584 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:48:34,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:48:34,948 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:48:34,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:34 WrapperNode [2020-10-29 07:48:34,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:48:34,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:48:34,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:48:34,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:48:34,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:34" (1/1) ... [2020-10-29 07:48:34,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:34" (1/1) ... [2020-10-29 07:48:35,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:34" (1/1) ... [2020-10-29 07:48:35,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:34" (1/1) ... [2020-10-29 07:48:35,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:34" (1/1) ... [2020-10-29 07:48:35,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:34" (1/1) ... [2020-10-29 07:48:35,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:34" (1/1) ... [2020-10-29 07:48:35,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:48:35,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:48:35,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:48:35,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:48:35,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:48:35,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:48:35,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:48:35,359 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:48:35,359 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:48:35,359 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:48:35,359 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:48:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:48:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:48:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:48:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:48:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:48:35,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:48:35,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:48:35,361 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:48:35,361 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:48:35,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:48:35,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:48:35,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:48:35,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:48:35,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:48:35,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:48:38,557 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:48:38,558 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:48:38,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:48:38 BoogieIcfgContainer [2020-10-29 07:48:38,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:48:38,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:48:38,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:48:38,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:48:38,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:48:33" (1/3) ... [2020-10-29 07:48:38,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b799bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:48:38, skipping insertion in model container [2020-10-29 07:48:38,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:34" (2/3) ... [2020-10-29 07:48:38,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b799bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:48:38, skipping insertion in model container [2020-10-29 07:48:38,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:48:38" (3/3) ... [2020-10-29 07:48:38,573 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label35.c [2020-10-29 07:48:38,589 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:48:38,596 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:48:38,613 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:48:38,652 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:48:38,652 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:48:38,653 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:48:38,653 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:48:38,653 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:48:38,653 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:48:38,654 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:48:38,654 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:48:38,689 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:48:38,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 07:48:38,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:38,701 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] [2020-10-29 07:48:38,702 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:38,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:38,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1112640361, now seen corresponding path program 1 times [2020-10-29 07:48:38,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:38,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403980316] [2020-10-29 07:48:38,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:39,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:39,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:39,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 07:48:39,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:39,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 630 [2020-10-29 07:48:39,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:39,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:39,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:48:39,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:48:39,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 07:48:39,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 07:48:39,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:39,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:39,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:39,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:39,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:39,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 07:48:39,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:39,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:39,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:39,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:39,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:48:39,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:48:39,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:48:39,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403980316] [2020-10-29 07:48:39,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:48:39,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:48:39,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195144190] [2020-10-29 07:48:39,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:48:39,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:39,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:48:39,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:48:39,931 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 5 states. [2020-10-29 07:48:49,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:49,025 INFO L93 Difference]: Finished difference Result 1534 states and 2807 transitions. [2020-10-29 07:48:49,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:48:49,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-29 07:48:49,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:49,057 INFO L225 Difference]: With dead ends: 1534 [2020-10-29 07:48:49,057 INFO L226 Difference]: Without dead ends: 1025 [2020-10-29 07:48:49,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:48:49,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-10-29 07:48:49,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1019. [2020-10-29 07:48:49,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019 states. [2020-10-29 07:48:49,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1533 transitions. [2020-10-29 07:48:49,277 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1533 transitions. Word has length 43 [2020-10-29 07:48:49,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:49,278 INFO L481 AbstractCegarLoop]: Abstraction has 1019 states and 1533 transitions. [2020-10-29 07:48:49,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:48:49,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1533 transitions. [2020-10-29 07:48:49,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 07:48:49,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:49,290 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:48:49,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:48:49,291 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:49,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:49,293 INFO L82 PathProgramCache]: Analyzing trace with hash 91725500, now seen corresponding path program 1 times [2020-10-29 07:48:49,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:49,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27546022] [2020-10-29 07:48:49,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:49,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:49,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:50,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:51,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:51,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 07:48:51,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:48:51,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1703 [2020-10-29 07:48:51,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:51,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:51,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:48:51,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:48:51,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 07:48:51,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:48:51,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:51,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:51,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:51,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:51,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:51,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:48:51,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:51,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:51,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:51,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:48:51,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 07:48:51,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:51,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:51,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:51,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:51,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:48:51,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:48:51,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-29 07:48:51,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:51,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:51,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:51,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:51,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:48:51,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:51,930 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:48:51,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27546022] [2020-10-29 07:48:51,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:48:51,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:48:51,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098221798] [2020-10-29 07:48:51,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:48:51,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:51,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:48:51,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:48:51,940 INFO L87 Difference]: Start difference. First operand 1019 states and 1533 transitions. Second operand 7 states. [2020-10-29 07:49:00,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:00,976 INFO L93 Difference]: Finished difference Result 2995 states and 4548 transitions. [2020-10-29 07:49:00,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:49:00,977 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-29 07:49:00,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:00,989 INFO L225 Difference]: With dead ends: 2995 [2020-10-29 07:49:00,990 INFO L226 Difference]: Without dead ends: 1982 [2020-10-29 07:49:00,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:49:00,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2020-10-29 07:49:01,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1961. [2020-10-29 07:49:01,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1961 states. [2020-10-29 07:49:01,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2598 transitions. [2020-10-29 07:49:01,068 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2598 transitions. Word has length 122 [2020-10-29 07:49:01,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:01,068 INFO L481 AbstractCegarLoop]: Abstraction has 1961 states and 2598 transitions. [2020-10-29 07:49:01,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:49:01,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2598 transitions. [2020-10-29 07:49:01,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-29 07:49:01,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:01,075 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:49:01,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:49:01,075 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:01,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:01,076 INFO L82 PathProgramCache]: Analyzing trace with hash 426632272, now seen corresponding path program 1 times [2020-10-29 07:49:01,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:01,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099149550] [2020-10-29 07:49:01,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:01,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:01,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:01,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:02,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:03,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:05,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:06,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:06,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-29 07:49:06,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:49:06,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 07:49:06,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:06,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:06,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:49:06,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:49:06,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:49:06,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:49:06,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:06,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:06,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:06,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:06,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:06,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:49:06,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:06,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:06,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:06,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:06,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:49:06,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:49:06,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:06,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:06,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:06,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:49:06,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:06,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 07:49:06,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:06,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:49:06,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:49:06,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:49:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:06,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:06,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:06,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:49:06,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:06,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 07:49:06,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:06,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:49:06,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:49:07,096 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-29 07:49:07,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099149550] [2020-10-29 07:49:07,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:49:07,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:49:07,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790940762] [2020-10-29 07:49:07,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:49:07,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:07,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:49:07,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:49:07,099 INFO L87 Difference]: Start difference. First operand 1961 states and 2598 transitions. Second operand 7 states. [2020-10-29 07:49:18,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:18,743 INFO L93 Difference]: Finished difference Result 3970 states and 5680 transitions. [2020-10-29 07:49:18,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:49:18,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-10-29 07:49:18,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:18,765 INFO L225 Difference]: With dead ends: 3970 [2020-10-29 07:49:18,766 INFO L226 Difference]: Without dead ends: 2942 [2020-10-29 07:49:18,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:49:18,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-10-29 07:49:18,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2914. [2020-10-29 07:49:18,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2914 states. [2020-10-29 07:49:18,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 3683 transitions. [2020-10-29 07:49:18,884 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 3683 transitions. Word has length 217 [2020-10-29 07:49:18,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:18,885 INFO L481 AbstractCegarLoop]: Abstraction has 2914 states and 3683 transitions. [2020-10-29 07:49:18,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:49:18,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 3683 transitions. [2020-10-29 07:49:18,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-29 07:49:18,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:18,897 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:49:18,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:49:18,898 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:18,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:18,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1597277429, now seen corresponding path program 1 times [2020-10-29 07:49:18,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:18,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277155934] [2020-10-29 07:49:18,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:19,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:19,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:20,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:23,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:24,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:24,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-29 07:49:24,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:49:24,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 07:49:24,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:24,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:24,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:49:24,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:49:24,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:49:24,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:24,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:24,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:24,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:24,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:24,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:24,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:49:24,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:24,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:24,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:24,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:24,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:49:24,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:24,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:24,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:24,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:24,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:49:24,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:24,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-29 07:49:24,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:24,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:24,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:24,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:24,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:49:24,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:25,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:49:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:25,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:25,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:25,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:49:25,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:25,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 07:49:25,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:25,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:25,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:25,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:49:25,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:25,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:25,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-29 07:49:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:25,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:25,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:25,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:49:25,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:25,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 07:49:25,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:25,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:25,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:25,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 07:49:25,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:25,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:25,788 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 105 proven. 149 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-29 07:49:25,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277155934] [2020-10-29 07:49:25,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:49:25,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:49:25,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523138851] [2020-10-29 07:49:25,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:49:25,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:25,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:49:25,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:49:25,791 INFO L87 Difference]: Start difference. First operand 2914 states and 3683 transitions. Second operand 7 states. [2020-10-29 07:49:36,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:36,746 INFO L93 Difference]: Finished difference Result 5552 states and 7106 transitions. [2020-10-29 07:49:36,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:49:36,750 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 402 [2020-10-29 07:49:36,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:36,766 INFO L225 Difference]: With dead ends: 5552 [2020-10-29 07:49:36,766 INFO L226 Difference]: Without dead ends: 2951 [2020-10-29 07:49:36,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:49:36,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-10-29 07:49:36,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2927. [2020-10-29 07:49:36,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2927 states. [2020-10-29 07:49:36,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 3698 transitions. [2020-10-29 07:49:36,884 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 3698 transitions. Word has length 402 [2020-10-29 07:49:36,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:36,885 INFO L481 AbstractCegarLoop]: Abstraction has 2927 states and 3698 transitions. [2020-10-29 07:49:36,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:49:36,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 3698 transitions. [2020-10-29 07:49:36,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-10-29 07:49:36,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:36,901 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:49:36,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:49:36,902 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:36,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:36,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1950944756, now seen corresponding path program 1 times [2020-10-29 07:49:36,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:36,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513065423] [2020-10-29 07:49:36,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:37,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:37,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:38,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:39,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:42,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:42,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 492 [2020-10-29 07:49:42,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:49:42,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-29 07:49:42,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:42,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:42,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:49:42,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-29 07:49:42,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 07:49:42,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:42,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:42,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:42,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:42,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:42,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:42,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:49:42,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:42,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:42,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:42,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:42,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:42,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:42,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:49:42,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:42,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 07:49:42,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:42,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:42,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:42,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:42,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:42,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:42,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:49:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:42,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:42,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:42,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:49:42,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:42,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 07:49:42,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:42,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:42,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:42,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:42,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:49:42,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:49:42,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-29 07:49:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:42,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:43,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:43,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:49:43,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:43,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-29 07:49:43,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:43,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:43,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:43,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:43,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:49:43,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 224 proven. 36 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-29 07:49:43,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513065423] [2020-10-29 07:49:43,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:49:43,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:49:43,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755237455] [2020-10-29 07:49:43,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:49:43,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:43,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:49:43,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:49:43,388 INFO L87 Difference]: Start difference. First operand 2927 states and 3698 transitions. Second operand 6 states. [2020-10-29 07:49:55,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:55,167 INFO L93 Difference]: Finished difference Result 5933 states and 7947 transitions. [2020-10-29 07:49:55,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:49:55,175 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 476 [2020-10-29 07:49:55,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:55,199 INFO L225 Difference]: With dead ends: 5933 [2020-10-29 07:49:55,200 INFO L226 Difference]: Without dead ends: 3941 [2020-10-29 07:49:55,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:49:55,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2020-10-29 07:49:55,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3924. [2020-10-29 07:49:55,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3924 states. [2020-10-29 07:49:55,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3924 states to 3924 states and 5134 transitions. [2020-10-29 07:49:55,317 INFO L78 Accepts]: Start accepts. Automaton has 3924 states and 5134 transitions. Word has length 476 [2020-10-29 07:49:55,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:55,319 INFO L481 AbstractCegarLoop]: Abstraction has 3924 states and 5134 transitions. [2020-10-29 07:49:55,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:49:55,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3924 states and 5134 transitions. [2020-10-29 07:49:55,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-10-29 07:49:55,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:55,333 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:49:55,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:49:55,333 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:55,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:55,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1782816071, now seen corresponding path program 1 times [2020-10-29 07:49:55,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:55,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283553836] [2020-10-29 07:49:55,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:55,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:55,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:57,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:59,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:00,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:00,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-10-29 07:50:00,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:50:00,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-29 07:50:00,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:00,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:00,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:00,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-29 07:50:00,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:50:00,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:50:00,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:00,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:00,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:00,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:00,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:00,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 07:50:00,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:00,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:00,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:00,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:50:00,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:00,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:00,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:00,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:50:00,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:00,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 07:50:00,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:00,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:00,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:00,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:00,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:00,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:50:01,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:50:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:01,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:01,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:01,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:50:01,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:01,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 07:50:01,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:01,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:01,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:01,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:01,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:50:01,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:50:01,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-29 07:50:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:01,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:01,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:01,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:50:01,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:01,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-29 07:50:01,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:01,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:50:01,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:50:02,036 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-29 07:50:02,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283553836] [2020-10-29 07:50:02,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:02,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:50:02,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7363856] [2020-10-29 07:50:02,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:50:02,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:02,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:50:02,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:50:02,040 INFO L87 Difference]: Start difference. First operand 3924 states and 5134 transitions. Second operand 7 states. [2020-10-29 07:50:15,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:15,541 INFO L93 Difference]: Finished difference Result 9160 states and 12450 transitions. [2020-10-29 07:50:15,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:50:15,544 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 479 [2020-10-29 07:50:15,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:15,575 INFO L225 Difference]: With dead ends: 9160 [2020-10-29 07:50:15,575 INFO L226 Difference]: Without dead ends: 5549 [2020-10-29 07:50:15,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:50:15,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5549 states. [2020-10-29 07:50:15,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5549 to 5184. [2020-10-29 07:50:15,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5184 states. [2020-10-29 07:50:15,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5184 states to 5184 states and 6500 transitions. [2020-10-29 07:50:15,748 INFO L78 Accepts]: Start accepts. Automaton has 5184 states and 6500 transitions. Word has length 479 [2020-10-29 07:50:15,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:15,749 INFO L481 AbstractCegarLoop]: Abstraction has 5184 states and 6500 transitions. [2020-10-29 07:50:15,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:50:15,749 INFO L276 IsEmpty]: Start isEmpty. Operand 5184 states and 6500 transitions. [2020-10-29 07:50:15,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-10-29 07:50:15,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:15,766 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:50:15,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:50:15,766 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:15,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:15,767 INFO L82 PathProgramCache]: Analyzing trace with hash 2104214579, now seen corresponding path program 1 times [2020-10-29 07:50:15,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:15,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184957862] [2020-10-29 07:50:15,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:15,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:16,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:16,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:17,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:18,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:21,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:21,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 501 [2020-10-29 07:50:21,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:50:21,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5168 [2020-10-29 07:50:21,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:21,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:21,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:50:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 07:50:21,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:21,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:21,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:21,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:21,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:21,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:21,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:50:21,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:21,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:21,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:21,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:21,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:21,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:21,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:21,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:21,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:21,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:50:21,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:21,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-29 07:50:21,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:21,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:21,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:21,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:21,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:50:21,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:21,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:50:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:21,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:22,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:22,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:22,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:50:22,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:50:22,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-29 07:50:22,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:22,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:22,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:22,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:22,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 07:50:22,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:22,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-10-29 07:50:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:22,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:22,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:22,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:50:22,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:22,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 07:50:22,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:22,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:22,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:22,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-29 07:50:22,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:22,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:22,639 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 190 proven. 81 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-29 07:50:22,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184957862] [2020-10-29 07:50:22,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:22,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:50:22,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962895129] [2020-10-29 07:50:22,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:50:22,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:22,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:50:22,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:50:22,642 INFO L87 Difference]: Start difference. First operand 5184 states and 6500 transitions. Second operand 7 states. [2020-10-29 07:50:37,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:37,255 INFO L93 Difference]: Finished difference Result 11400 states and 14686 transitions. [2020-10-29 07:50:37,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:50:37,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 485 [2020-10-29 07:50:37,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:37,295 INFO L225 Difference]: With dead ends: 11400 [2020-10-29 07:50:37,296 INFO L226 Difference]: Without dead ends: 6529 [2020-10-29 07:50:37,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:50:37,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6529 states. [2020-10-29 07:50:37,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6529 to 6505. [2020-10-29 07:50:37,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6505 states. [2020-10-29 07:50:37,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6505 states to 6505 states and 8124 transitions. [2020-10-29 07:50:37,565 INFO L78 Accepts]: Start accepts. Automaton has 6505 states and 8124 transitions. Word has length 485 [2020-10-29 07:50:37,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:37,566 INFO L481 AbstractCegarLoop]: Abstraction has 6505 states and 8124 transitions. [2020-10-29 07:50:37,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:50:37,567 INFO L276 IsEmpty]: Start isEmpty. Operand 6505 states and 8124 transitions. [2020-10-29 07:50:37,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-10-29 07:50:37,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:37,585 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, 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, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:50:37,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:50:37,585 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:37,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:37,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1921473450, now seen corresponding path program 1 times [2020-10-29 07:50:37,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:37,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871929229] [2020-10-29 07:50:37,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:37,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:37,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:38,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:38,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:39,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:42,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:42,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:42,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 524 [2020-10-29 07:50:42,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:50:42,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 07:50:42,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:42,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:50:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 07:50:42,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:42,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:42,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:42,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:42,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:42,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:42,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:50:42,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:42,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:42,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:42,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:42,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:42,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:42,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:43,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:43,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:43,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:50:43,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:43,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 07:50:43,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:43,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:43,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:43,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:43,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:50:43,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:43,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:50:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:43,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:43,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:43,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:50:43,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:43,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-29 07:50:43,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:43,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:43,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:43,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:43,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:50:43,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:43,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-29 07:50:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:43,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:43,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:43,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:43,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:50:43,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:50:43,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 07:50:43,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:43,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:43,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:43,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 07:50:43,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:50:43,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:43,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-10-29 07:50:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:43,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:43,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:43,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:50:43,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:43,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 07:50:43,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:43,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:43,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:43,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-29 07:50:43,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:43,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 244 proven. 160 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-10-29 07:50:44,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871929229] [2020-10-29 07:50:44,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:44,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:50:44,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399963507] [2020-10-29 07:50:44,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:50:44,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:44,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:50:44,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:50:44,139 INFO L87 Difference]: Start difference. First operand 6505 states and 8124 transitions. Second operand 8 states. [2020-10-29 07:51:10,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:10,776 INFO L93 Difference]: Finished difference Result 27256 states and 36410 transitions. [2020-10-29 07:51:10,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 07:51:10,778 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 506 [2020-10-29 07:51:10,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:10,867 INFO L225 Difference]: With dead ends: 27256 [2020-10-29 07:51:10,867 INFO L226 Difference]: Without dead ends: 18226 [2020-10-29 07:51:10,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2020-10-29 07:51:10,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18226 states. [2020-10-29 07:51:11,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18226 to 14679. [2020-10-29 07:51:11,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14679 states. [2020-10-29 07:51:11,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14679 states to 14679 states and 17420 transitions. [2020-10-29 07:51:11,511 INFO L78 Accepts]: Start accepts. Automaton has 14679 states and 17420 transitions. Word has length 506 [2020-10-29 07:51:11,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:11,512 INFO L481 AbstractCegarLoop]: Abstraction has 14679 states and 17420 transitions. [2020-10-29 07:51:11,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:51:11,513 INFO L276 IsEmpty]: Start isEmpty. Operand 14679 states and 17420 transitions. [2020-10-29 07:51:11,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2020-10-29 07:51:11,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:11,531 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:51:11,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:51:11,532 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:11,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:11,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1232156466, now seen corresponding path program 1 times [2020-10-29 07:51:11,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:11,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761251789] [2020-10-29 07:51:11,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:11,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:12,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:14,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:16,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:16,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 622 [2020-10-29 07:51:16,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:51:16,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-29 07:51:16,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:16,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:16,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:16,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-29 07:51:16,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-29 07:51:16,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:16,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:16,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:16,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:16,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:16,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:16,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:51:16,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:16,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:16,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:17,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:17,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:17,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:17,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:51:17,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:17,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 07:51:17,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:17,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:17,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:17,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:17,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:17,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:51:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:17,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:17,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:17,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:51:17,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:17,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 07:51:17,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:17,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:17,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:17,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:17,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:51:17,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:17,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:51:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:17,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:17,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:17,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-29 07:51:17,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:17,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-29 07:51:17,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:17,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:17,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:17,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:17,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-29 07:51:17,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:18,176 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 393 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:51:18,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761251789] [2020-10-29 07:51:18,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:18,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:51:18,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480115577] [2020-10-29 07:51:18,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:51:18,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:18,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:51:18,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:51:18,179 INFO L87 Difference]: Start difference. First operand 14679 states and 17420 transitions. Second operand 7 states. [2020-10-29 07:51:30,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:30,461 INFO L93 Difference]: Finished difference Result 29118 states and 34676 transitions. [2020-10-29 07:51:30,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:51:30,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 606 [2020-10-29 07:51:30,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:30,536 INFO L225 Difference]: With dead ends: 29118 [2020-10-29 07:51:30,536 INFO L226 Difference]: Without dead ends: 14752 [2020-10-29 07:51:30,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:51:30,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14752 states. [2020-10-29 07:51:30,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14752 to 14412. [2020-10-29 07:51:30,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14412 states. [2020-10-29 07:51:30,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14412 states to 14412 states and 16428 transitions. [2020-10-29 07:51:30,920 INFO L78 Accepts]: Start accepts. Automaton has 14412 states and 16428 transitions. Word has length 606 [2020-10-29 07:51:30,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:30,921 INFO L481 AbstractCegarLoop]: Abstraction has 14412 states and 16428 transitions. [2020-10-29 07:51:30,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:51:30,922 INFO L276 IsEmpty]: Start isEmpty. Operand 14412 states and 16428 transitions. [2020-10-29 07:51:30,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2020-10-29 07:51:30,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:30,938 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:51:30,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:51:30,938 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:30,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:30,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1738929695, now seen corresponding path program 1 times [2020-10-29 07:51:30,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:30,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069841091] [2020-10-29 07:51:30,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:31,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:31,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:31,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:32,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:35,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:36,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:36,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 664 [2020-10-29 07:51:36,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:51:36,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-29 07:51:36,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:36,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 07:51:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:51:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 655 [2020-10-29 07:51:36,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:36,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:36,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:36,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:36,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:36,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:36,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:51:36,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:36,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:36,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:36,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:36,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:51:36,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:36,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:36,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:36,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:36,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:51:36,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:36,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-29 07:51:36,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:36,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:36,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:51:36,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:36,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-29 07:51:36,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:36,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-29 07:51:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:37,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:37,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:37,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:37,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:51:37,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:51:37,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-29 07:51:37,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:37,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:37,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:37,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:37,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:51:37,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:37,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-10-29 07:51:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:37,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:37,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:38,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:38,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 07:51:38,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:51:38,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-29 07:51:38,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:38,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:38,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:38,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:38,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-29 07:51:38,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2020-10-29 07:51:38,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069841091] [2020-10-29 07:51:38,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:38,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:51:38,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802673697] [2020-10-29 07:51:38,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 07:51:38,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:38,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 07:51:38,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 07:51:38,540 INFO L87 Difference]: Start difference. First operand 14412 states and 16428 transitions. Second operand 9 states. [2020-10-29 07:51:38,794 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-29 07:51:53,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:53,881 INFO L93 Difference]: Finished difference Result 29504 states and 33660 transitions. [2020-10-29 07:51:53,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 07:51:53,883 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 648 [2020-10-29 07:51:53,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:53,928 INFO L225 Difference]: With dead ends: 29504 [2020-10-29 07:51:53,928 INFO L226 Difference]: Without dead ends: 16647 [2020-10-29 07:51:53,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-29 07:51:53,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16647 states. [2020-10-29 07:51:54,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16647 to 16303. [2020-10-29 07:51:54,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16303 states. [2020-10-29 07:51:54,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16303 states to 16303 states and 18461 transitions. [2020-10-29 07:51:54,291 INFO L78 Accepts]: Start accepts. Automaton has 16303 states and 18461 transitions. Word has length 648 [2020-10-29 07:51:54,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:54,292 INFO L481 AbstractCegarLoop]: Abstraction has 16303 states and 18461 transitions. [2020-10-29 07:51:54,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 07:51:54,292 INFO L276 IsEmpty]: Start isEmpty. Operand 16303 states and 18461 transitions. [2020-10-29 07:51:54,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2020-10-29 07:51:54,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:54,312 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:51:54,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:51:54,312 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:54,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:54,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1040492043, now seen corresponding path program 1 times [2020-10-29 07:51:54,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:54,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333119727] [2020-10-29 07:51:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:54,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:54,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:55,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:56,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:59,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:59,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 667 [2020-10-29 07:51:59,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:51:59,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 07:51:59,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:59,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-29 07:51:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-29 07:51:59,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:59,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:59,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:59,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:59,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:59,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:59,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:51:59,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:59,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:59,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:59,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:59,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:59,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:59,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:51:59,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:59,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 07:51:59,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:59,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:59,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:59,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:59,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:51:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:59,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:00,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:00,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:52:00,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:00,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 07:52:00,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:00,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:00,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:00,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:00,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:52:00,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:00,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:52:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:00,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:00,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:00,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 07:52:00,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:00,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-29 07:52:00,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:00,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:00,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:00,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:52:00,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-29 07:52:00,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:00,781 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 438 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:52:00,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333119727] [2020-10-29 07:52:00,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:52:00,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:52:00,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627366822] [2020-10-29 07:52:00,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:52:00,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:00,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:52:00,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:52:00,784 INFO L87 Difference]: Start difference. First operand 16303 states and 18461 transitions. Second operand 7 states.