/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=SHALLOWEST --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/Problem18_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:29:58,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:29:58,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:29:58,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:29:58,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:29:58,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:29:58,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:29:58,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:29:58,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:29:58,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:29:58,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:29:58,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:29:58,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:29:58,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:29:58,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:29:58,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:29:58,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:29:58,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:29:58,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:29:58,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:29:58,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:29:58,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:29:58,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:29:58,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:29:58,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:29:58,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:29:58,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:29:58,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:29:58,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:29:58,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:29:58,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:29:58,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:29:58,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:29:58,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:29:58,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:29:58,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:29:58,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:29:58,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:29:58,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:29:58,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:29:58,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:29:58,226 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 [2020-10-27 00:29:58,282 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:29:58,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:29:58,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:29:58,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:29:58,287 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:29:58,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:29:58,287 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:29:58,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:29:58,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:29:58,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:29:58,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:29:58,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:29:58,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:29:58,289 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:29:58,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:29:58,290 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:29:58,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:29:58,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:29:58,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:29:58,291 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:29:58,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:29:58,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:29:58,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:29:58,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:29:58,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:29:58,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:29:58,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:29:58,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:29:58,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:29:58,293 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:29:58,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:29:58,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:29:58,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:29:58,775 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:29:58,776 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:29:58,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label34.c [2020-10-27 00:29:58,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea421e4bd/b3c0a45c3d5e4639a0fe11d0e83981f1/FLAG09517424a [2020-10-27 00:29:59,731 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:29:59,732 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label34.c [2020-10-27 00:29:59,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea421e4bd/b3c0a45c3d5e4639a0fe11d0e83981f1/FLAG09517424a [2020-10-27 00:29:59,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea421e4bd/b3c0a45c3d5e4639a0fe11d0e83981f1 [2020-10-27 00:29:59,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:29:59,854 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:29:59,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:29:59,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:29:59,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:29:59,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:29:59" (1/1) ... [2020-10-27 00:29:59,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d667cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:59, skipping insertion in model container [2020-10-27 00:29:59,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:29:59" (1/1) ... [2020-10-27 00:29:59,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:30:00,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:30:01,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:30:01,264 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:30:01,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:30:01,878 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:30:01,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:01 WrapperNode [2020-10-27 00:30:01,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:30:01,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:30:01,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:30:01,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:30:01,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:01" (1/1) ... [2020-10-27 00:30:01,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:01" (1/1) ... [2020-10-27 00:30:01,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:01" (1/1) ... [2020-10-27 00:30:01,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:01" (1/1) ... [2020-10-27 00:30:02,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:01" (1/1) ... [2020-10-27 00:30:02,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:01" (1/1) ... [2020-10-27 00:30:02,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:01" (1/1) ... [2020-10-27 00:30:02,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:30:02,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:30:02,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:30:02,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:30:02,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:01" (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 [2020-10-27 00:30:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:30:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:30:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:30:02,263 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:30:02,263 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:30:02,264 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:30:02,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:30:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:30:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:30:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:30:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:30:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:30:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:30:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:30:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:30:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:30:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:30:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:30:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:30:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:30:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:30:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:30:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:30:06,461 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:30:06,462 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:30:06,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:30:06 BoogieIcfgContainer [2020-10-27 00:30:06,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:30:06,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:30:06,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:30:06,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:30:06,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:29:59" (1/3) ... [2020-10-27 00:30:06,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7b5d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:30:06, skipping insertion in model container [2020-10-27 00:30:06,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:01" (2/3) ... [2020-10-27 00:30:06,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7b5d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:30:06, skipping insertion in model container [2020-10-27 00:30:06,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:30:06" (3/3) ... [2020-10-27 00:30:06,475 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label34.c [2020-10-27 00:30:06,488 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:30:06,494 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:30:06,508 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:30:06,545 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:30:06,545 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:30:06,545 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:30:06,545 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:30:06,546 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:30:06,546 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:30:06,546 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:30:06,546 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:30:06,586 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:30:06,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-27 00:30:06,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:06,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:30:06,595 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:06,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:06,610 INFO L82 PathProgramCache]: Analyzing trace with hash -705368896, now seen corresponding path program 1 times [2020-10-27 00:30:06,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:06,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523670489] [2020-10-27 00:30:06,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:06,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:07,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:07,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 00:30:07,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:07,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-27 00:30:07,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:07,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:07,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:07,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 00:30:07,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:30:07,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:07,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:07,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:07,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:07,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:07,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:30:07,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:07,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:07,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:07,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:07,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:30:07,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523670489] [2020-10-27 00:30:07,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:30:07,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 00:30:07,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530936463] [2020-10-27 00:30:07,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 00:30:07,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:07,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 00:30:07,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 00:30:07,554 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-27 00:30:17,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:17,078 INFO L93 Difference]: Finished difference Result 2275 states and 4355 transitions. [2020-10-27 00:30:17,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:30:17,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-27 00:30:17,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:17,107 INFO L225 Difference]: With dead ends: 2275 [2020-10-27 00:30:17,107 INFO L226 Difference]: Without dead ends: 1433 [2020-10-27 00:30:17,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:30:17,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-27 00:30:17,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1426. [2020-10-27 00:30:17,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-27 00:30:17,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2230 transitions. [2020-10-27 00:30:17,305 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2230 transitions. Word has length 14 [2020-10-27 00:30:17,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:17,306 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 2230 transitions. [2020-10-27 00:30:17,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 00:30:17,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2230 transitions. [2020-10-27 00:30:17,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 00:30:17,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:17,311 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:30:17,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:30:17,312 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:17,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:17,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1413145976, now seen corresponding path program 1 times [2020-10-27 00:30:17,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:17,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317620263] [2020-10-27 00:30:17,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:17,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:17,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:18,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:18,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 00:30:18,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:30:18,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 862 [2020-10-27 00:30:18,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:30:18,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:30:18,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:18,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:18,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:18,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:18,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:18,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 00:30:18,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:18,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:18,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:18,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:18,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:30:18,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:18,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 00:30:18,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:18,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:18,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:18,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 00:30:18,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:18,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:30:18,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317620263] [2020-10-27 00:30:18,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:30:18,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:30:18,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510579107] [2020-10-27 00:30:18,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:18,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:18,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:18,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:18,651 INFO L87 Difference]: Start difference. First operand 1426 states and 2230 transitions. Second operand 7 states. [2020-10-27 00:30:20,210 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:30:29,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:29,778 INFO L93 Difference]: Finished difference Result 4354 states and 6840 transitions. [2020-10-27 00:30:29,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:30:29,779 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-10-27 00:30:29,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:29,800 INFO L225 Difference]: With dead ends: 4354 [2020-10-27 00:30:29,800 INFO L226 Difference]: Without dead ends: 2934 [2020-10-27 00:30:29,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:30:29,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-10-27 00:30:29,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 2879. [2020-10-27 00:30:29,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2879 states. [2020-10-27 00:30:29,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 3877 transitions. [2020-10-27 00:30:29,916 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 3877 transitions. Word has length 84 [2020-10-27 00:30:29,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:29,916 INFO L481 AbstractCegarLoop]: Abstraction has 2879 states and 3877 transitions. [2020-10-27 00:30:29,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:30:29,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 3877 transitions. [2020-10-27 00:30:29,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 00:30:29,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:29,920 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:30:29,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:30:29,921 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:29,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:29,922 INFO L82 PathProgramCache]: Analyzing trace with hash -269529120, now seen corresponding path program 1 times [2020-10-27 00:30:29,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:29,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349741361] [2020-10-27 00:30:29,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:30,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:30,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:31,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:31,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:30:31,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:30:31,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1072 [2020-10-27 00:30:31,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:31,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:31,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:31,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:30:31,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:31,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:31,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:31,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:31,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:31,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:31,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:30:31,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:31,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:31,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:31,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:31,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:31,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:31,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:31,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:31,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:30:31,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:31,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 00:30:31,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:31,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:31,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:31,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:30:31,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:31,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:30:31,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349741361] [2020-10-27 00:30:31,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:30:31,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:30:31,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062392279] [2020-10-27 00:30:31,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:31,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:31,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:31,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:31,540 INFO L87 Difference]: Start difference. First operand 2879 states and 3877 transitions. Second operand 7 states. [2020-10-27 00:30:43,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:43,846 INFO L93 Difference]: Finished difference Result 8803 states and 12038 transitions. [2020-10-27 00:30:43,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:30:43,847 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-27 00:30:43,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:43,886 INFO L225 Difference]: With dead ends: 8803 [2020-10-27 00:30:43,886 INFO L226 Difference]: Without dead ends: 5930 [2020-10-27 00:30:43,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:30:43,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5930 states. [2020-10-27 00:30:44,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5930 to 5833. [2020-10-27 00:30:44,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5833 states. [2020-10-27 00:30:44,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5833 states to 5833 states and 7267 transitions. [2020-10-27 00:30:44,074 INFO L78 Accepts]: Start accepts. Automaton has 5833 states and 7267 transitions. Word has length 104 [2020-10-27 00:30:44,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:44,074 INFO L481 AbstractCegarLoop]: Abstraction has 5833 states and 7267 transitions. [2020-10-27 00:30:44,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:30:44,075 INFO L276 IsEmpty]: Start isEmpty. Operand 5833 states and 7267 transitions. [2020-10-27 00:30:44,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-27 00:30:44,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:44,080 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:30:44,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:30:44,081 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:44,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:44,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1246239850, now seen corresponding path program 1 times [2020-10-27 00:30:44,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:44,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366176531] [2020-10-27 00:30:44,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:44,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:44,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:45,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:47,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:47,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-27 00:30:47,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:30:47,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2897 [2020-10-27 00:30:47,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:47,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:47,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:47,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:30:47,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:47,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:47,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:47,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:47,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:47,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:47,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:30:47,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:47,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:47,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:47,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:47,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:47,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:47,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:47,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:47,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:30:47,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:47,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-27 00:30:47,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:47,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:47,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:47,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:30:47,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:47,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 00:30:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:47,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:47,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:47,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 00:30:47,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:47,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:30:47,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:47,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:47,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 00:30:47,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:47,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:30:48,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366176531] [2020-10-27 00:30:48,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:30:48,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:30:48,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971094320] [2020-10-27 00:30:48,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:48,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:48,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:48,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:48,042 INFO L87 Difference]: Start difference. First operand 5833 states and 7267 transitions. Second operand 7 states. [2020-10-27 00:30:58,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:58,754 INFO L93 Difference]: Finished difference Result 13979 states and 17338 transitions. [2020-10-27 00:30:58,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:30:58,760 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-10-27 00:30:58,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:58,801 INFO L225 Difference]: With dead ends: 13979 [2020-10-27 00:30:58,801 INFO L226 Difference]: Without dead ends: 8152 [2020-10-27 00:30:58,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:30:58,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8152 states. [2020-10-27 00:30:59,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8152 to 8102. [2020-10-27 00:30:59,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8102 states. [2020-10-27 00:30:59,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8102 states to 8102 states and 9798 transitions. [2020-10-27 00:30:59,081 INFO L78 Accepts]: Start accepts. Automaton has 8102 states and 9798 transitions. Word has length 209 [2020-10-27 00:30:59,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:59,083 INFO L481 AbstractCegarLoop]: Abstraction has 8102 states and 9798 transitions. [2020-10-27 00:30:59,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:30:59,083 INFO L276 IsEmpty]: Start isEmpty. Operand 8102 states and 9798 transitions. [2020-10-27 00:30:59,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-27 00:30:59,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:59,097 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:30:59,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:30:59,098 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:59,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:59,099 INFO L82 PathProgramCache]: Analyzing trace with hash 155463990, now seen corresponding path program 1 times [2020-10-27 00:30:59,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:59,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963773384] [2020-10-27 00:30:59,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:59,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:59,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:00,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:00,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:04,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:04,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-27 00:31:04,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:31:04,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 00:31:04,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:04,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:04,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:31:04,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 00:31:04,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:04,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:04,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:04,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:04,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:04,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:04,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:31:04,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:04,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:04,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:04,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:04,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:04,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:04,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:04,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:04,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:31:04,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:04,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 00:31:04,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:31:04,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:04,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:31:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:04,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:04,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:05,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:05,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:31:05,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:31:05,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-27 00:31:05,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:05,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:05,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:05,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:31:05,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:05,318 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-27 00:31:05,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-27 00:31:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:05,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:05,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:05,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 00:31:05,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:05,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:31:05,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:05,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:05,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 00:31:05,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:05,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:06,563 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 141 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 00:31:06,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963773384] [2020-10-27 00:31:06,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:06,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:06,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161760333] [2020-10-27 00:31:06,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:06,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:06,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:06,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:06,566 INFO L87 Difference]: Start difference. First operand 8102 states and 9798 transitions. Second operand 7 states. [2020-10-27 00:31:15,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:15,945 INFO L93 Difference]: Finished difference Result 15862 states and 19418 transitions. [2020-10-27 00:31:15,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:31:15,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 395 [2020-10-27 00:31:15,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:16,001 INFO L225 Difference]: With dead ends: 15862 [2020-10-27 00:31:16,001 INFO L226 Difference]: Without dead ends: 8201 [2020-10-27 00:31:16,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:31:16,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8201 states. [2020-10-27 00:31:16,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8201 to 8051. [2020-10-27 00:31:16,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8051 states. [2020-10-27 00:31:16,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8051 states to 8051 states and 8983 transitions. [2020-10-27 00:31:16,240 INFO L78 Accepts]: Start accepts. Automaton has 8051 states and 8983 transitions. Word has length 395 [2020-10-27 00:31:16,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:16,241 INFO L481 AbstractCegarLoop]: Abstraction has 8051 states and 8983 transitions. [2020-10-27 00:31:16,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:16,241 INFO L276 IsEmpty]: Start isEmpty. Operand 8051 states and 8983 transitions. [2020-10-27 00:31:16,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2020-10-27 00:31:16,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:16,265 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:31:16,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:31:16,265 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:16,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:16,266 INFO L82 PathProgramCache]: Analyzing trace with hash 982646712, now seen corresponding path program 1 times [2020-10-27 00:31:16,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:16,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239854855] [2020-10-27 00:31:16,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:16,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:16,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:17,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:21,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:21,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 756 [2020-10-27 00:31:21,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:31:21,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 00:31:21,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:21,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 00:31:21,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:31:21,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 661 [2020-10-27 00:31:21,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:21,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:21,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:21,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:21,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:21,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:21,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 00:31:21,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:21,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:21,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:21,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:31:21,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:21,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:21,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:23,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:23,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:23,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:23,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1400 [2020-10-27 00:31:23,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:23,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:31:23,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:23,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 532 [2020-10-27 00:31:23,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:23,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:23,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:24,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:24,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:24,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:24,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-27 00:31:24,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:24,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:31:24,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:24,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-27 00:31:24,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:24,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:24,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:24,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:24,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:24,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:24,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:31:24,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:24,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:24,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:24,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 00:31:24,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:25,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:25,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:25,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:25,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:31:25,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:25,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 00:31:25,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:25,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:25,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:25,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:31:25,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:26,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-27 00:31:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:26,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:26,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:26,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 00:31:26,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:26,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:31:26,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 00:31:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:26,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 23 proven. 253 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-27 00:31:27,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239854855] [2020-10-27 00:31:27,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:27,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 00:31:27,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904513020] [2020-10-27 00:31:27,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 00:31:27,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:27,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 00:31:27,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-27 00:31:27,565 INFO L87 Difference]: Start difference. First operand 8051 states and 8983 transitions. Second operand 9 states. [2020-10-27 00:31:36,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:36,524 INFO L93 Difference]: Finished difference Result 16353 states and 18291 transitions. [2020-10-27 00:31:36,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 00:31:36,525 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 736 [2020-10-27 00:31:36,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:36,557 INFO L225 Difference]: With dead ends: 16353 [2020-10-27 00:31:36,557 INFO L226 Difference]: Without dead ends: 9010 [2020-10-27 00:31:36,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-10-27 00:31:36,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9010 states. [2020-10-27 00:31:36,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9010 to 8765. [2020-10-27 00:31:36,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8765 states. [2020-10-27 00:31:36,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8765 states to 8765 states and 9694 transitions. [2020-10-27 00:31:36,771 INFO L78 Accepts]: Start accepts. Automaton has 8765 states and 9694 transitions. Word has length 736 [2020-10-27 00:31:36,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:36,772 INFO L481 AbstractCegarLoop]: Abstraction has 8765 states and 9694 transitions. [2020-10-27 00:31:36,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 00:31:36,773 INFO L276 IsEmpty]: Start isEmpty. Operand 8765 states and 9694 transitions. [2020-10-27 00:31:36,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 939 [2020-10-27 00:31:36,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:36,813 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:31:36,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:31:36,814 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:36,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:36,815 INFO L82 PathProgramCache]: Analyzing trace with hash 36176722, now seen corresponding path program 1 times [2020-10-27 00:31:36,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:36,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476365561] [2020-10-27 00:31:36,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:37,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:38,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:39,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:39,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 960 [2020-10-27 00:31:39,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:31:39,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2578 [2020-10-27 00:31:39,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:39,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:31:39,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:31:39,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:39,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:39,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:39,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:39,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:39,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:39,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:31:39,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:39,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:39,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:39,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:39,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:39,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:39,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:40,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:40,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:40,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:40,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 00:31:40,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:40,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:40,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:40,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:40,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:40,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:40,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:40,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:31:40,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:40,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:40,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:40,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:40,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:40,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:40,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:40,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:40,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:40,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:40,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:31:40,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:40,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:40,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:40,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:40,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:40,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:40,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:40,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-27 00:31:40,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:40,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:40,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:40,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:31:40,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:40,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:40,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:41,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:41,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:41,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:41,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:31:41,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:41,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:41,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:41,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:31:41,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 00:31:41,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:31:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:41,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:41,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:41,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:31:41,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:41,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 00:31:41,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:41,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:41,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:41,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:31:41,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:41,744 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 00:31:41,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476365561] [2020-10-27 00:31:41,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:41,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:41,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056653056] [2020-10-27 00:31:41,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:41,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:41,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:41,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:41,748 INFO L87 Difference]: Start difference. First operand 8765 states and 9694 transitions. Second operand 7 states. [2020-10-27 00:31:51,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:51,523 INFO L93 Difference]: Finished difference Result 19183 states and 21953 transitions. [2020-10-27 00:31:51,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:31:51,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 938 [2020-10-27 00:31:51,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:51,570 INFO L225 Difference]: With dead ends: 19183 [2020-10-27 00:31:51,571 INFO L226 Difference]: Without dead ends: 11836 [2020-10-27 00:31:51,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:31:51,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11836 states. [2020-10-27 00:31:51,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11836 to 11750. [2020-10-27 00:31:51,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11750 states. [2020-10-27 00:31:51,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11750 states to 11750 states and 13167 transitions. [2020-10-27 00:31:51,893 INFO L78 Accepts]: Start accepts. Automaton has 11750 states and 13167 transitions. Word has length 938 [2020-10-27 00:31:51,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:51,895 INFO L481 AbstractCegarLoop]: Abstraction has 11750 states and 13167 transitions. [2020-10-27 00:31:51,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:51,895 INFO L276 IsEmpty]: Start isEmpty. Operand 11750 states and 13167 transitions. [2020-10-27 00:31:51,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1022 [2020-10-27 00:31:51,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:51,911 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:31:51,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:31:51,912 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:51,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:51,912 INFO L82 PathProgramCache]: Analyzing trace with hash -124372712, now seen corresponding path program 1 times [2020-10-27 00:31:51,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:51,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026011795] [2020-10-27 00:31:51,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:52,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:52,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:55,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:57,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:57,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1045 [2020-10-27 00:31:57,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:31:57,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 00:31:57,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:57,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:57,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:31:57,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:31:57,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:57,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:57,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:57,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:57,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:57,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:57,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:31:57,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:57,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:57,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:57,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:57,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:57,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:57,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:57,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:57,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:57,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:57,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 00:31:57,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:57,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:57,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:57,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:57,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:57,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:57,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:57,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:57,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:57,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:57,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 00:31:57,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:57,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:57,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:57,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:57,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:57,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:57,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:57,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:31:57,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:57,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:57,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:57,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:57,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:58,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:58,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:58,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:58,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:58,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:58,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-27 00:31:58,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:31:58,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:58,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:58,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:58,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:58,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:58,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:58,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:31:58,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:58,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:58,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:31:58,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:58,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:31:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:58,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:58,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:58,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:31:58,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:58,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 00:31:58,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:58,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:58,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:58,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:31:58,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:58,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-27 00:31:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:58,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:58,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:58,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:31:58,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:58,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:31:58,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:58,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:58,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 00:31:58,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:58,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:59,130 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 186 proven. 75 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2020-10-27 00:31:59,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026011795] [2020-10-27 00:31:59,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:59,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:59,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626486808] [2020-10-27 00:31:59,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:59,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:59,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:59,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:59,133 INFO L87 Difference]: Start difference. First operand 11750 states and 13167 transitions. Second operand 7 states. [2020-10-27 00:32:09,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:09,831 INFO L93 Difference]: Finished difference Result 30951 states and 35777 transitions. [2020-10-27 00:32:09,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:32:09,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1021 [2020-10-27 00:32:09,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:09,912 INFO L225 Difference]: With dead ends: 30951 [2020-10-27 00:32:09,912 INFO L226 Difference]: Without dead ends: 20619 [2020-10-27 00:32:09,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:32:09,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20619 states. [2020-10-27 00:32:10,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20619 to 20509. [2020-10-27 00:32:10,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20509 states. [2020-10-27 00:32:10,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20509 states to 20509 states and 23448 transitions. [2020-10-27 00:32:10,429 INFO L78 Accepts]: Start accepts. Automaton has 20509 states and 23448 transitions. Word has length 1021 [2020-10-27 00:32:10,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:10,431 INFO L481 AbstractCegarLoop]: Abstraction has 20509 states and 23448 transitions. [2020-10-27 00:32:10,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:10,431 INFO L276 IsEmpty]: Start isEmpty. Operand 20509 states and 23448 transitions. [2020-10-27 00:32:10,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1051 [2020-10-27 00:32:10,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:10,452 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:32:10,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:32:10,452 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:10,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:10,453 INFO L82 PathProgramCache]: Analyzing trace with hash -2035410042, now seen corresponding path program 1 times [2020-10-27 00:32:10,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:10,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056952795] [2020-10-27 00:32:10,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:10,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:11,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:13,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:15,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:15,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1074 [2020-10-27 00:32:15,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:32:15,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-27 00:32:15,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:32:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:32:15,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:16,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:16,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:16,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:16,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:16,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:16,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:32:16,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:16,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:16,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:16,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:16,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:16,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:16,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:32:16,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:16,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 00:32:16,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:16,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:16,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:16,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:16,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:16,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:16,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:16,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:16,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:32:16,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:16,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 00:32:16,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:16,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:16,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:32:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:16,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:16,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:16,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:32:16,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:16,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:32:16,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:16,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:16,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:32:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:16,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:16,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:16,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:32:16,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:16,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 00:32:16,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:16,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:16,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:16,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:32:16,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:16,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:16,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:16,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:16,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:32:16,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:16,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:32:16,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:16,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:16,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:16,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:32:16,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:16,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:32:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:16,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:16,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:16,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:32:16,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:16,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 00:32:16,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:16,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:16,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:16,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:32:16,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:17,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-27 00:32:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:17,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:17,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:17,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 00:32:17,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:17,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 00:32:17,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 00:32:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:17,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:17,729 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 278 proven. 79 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2020-10-27 00:32:17,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056952795] [2020-10-27 00:32:17,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:17,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:32:17,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912511098] [2020-10-27 00:32:17,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:17,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:17,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:17,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:17,733 INFO L87 Difference]: Start difference. First operand 20509 states and 23448 transitions. Second operand 7 states. [2020-10-27 00:32:32,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:32,592 INFO L93 Difference]: Finished difference Result 44831 states and 51848 transitions. [2020-10-27 00:32:32,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:32:32,593 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1050 [2020-10-27 00:32:32,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:32,675 INFO L225 Difference]: With dead ends: 44831 [2020-10-27 00:32:32,676 INFO L226 Difference]: Without dead ends: 25740 [2020-10-27 00:32:32,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:32:32,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25740 states. [2020-10-27 00:32:33,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25740 to 25580. [2020-10-27 00:32:33,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25580 states. [2020-10-27 00:32:33,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25580 states to 25580 states and 29094 transitions. [2020-10-27 00:32:33,221 INFO L78 Accepts]: Start accepts. Automaton has 25580 states and 29094 transitions. Word has length 1050 [2020-10-27 00:32:33,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:33,222 INFO L481 AbstractCegarLoop]: Abstraction has 25580 states and 29094 transitions. [2020-10-27 00:32:33,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:33,222 INFO L276 IsEmpty]: Start isEmpty. Operand 25580 states and 29094 transitions. [2020-10-27 00:32:33,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1089 [2020-10-27 00:32:33,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:33,239 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:32:33,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:32:33,240 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:33,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:33,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1999935218, now seen corresponding path program 1 times [2020-10-27 00:32:33,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:33,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332991965] [2020-10-27 00:32:33,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:33,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:34,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:36,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:36,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1112 [2020-10-27 00:32:36,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:32:36,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3040 [2020-10-27 00:32:36,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:36,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:36,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:32:36,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 00:32:36,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:36,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:36,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:36,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:36,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:36,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:36,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:32:36,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:36,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:36,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:36,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:36,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:36,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:36,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:36,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:36,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:32:36,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:36,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 00:32:36,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:36,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:36,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:36,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:36,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:36,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:32:36,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:36,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:32:36,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:36,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:36,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:36,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:36,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:36,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:32:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:36,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:37,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:37,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:32:37,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:37,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:32:37,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:37,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:37,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:37,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:37,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:37,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:32:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:37,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:37,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:37,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:32:37,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:37,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 00:32:37,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:37,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:37,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:37,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:37,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:37,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:37,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:37,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:37,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:32:37,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:37,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:32:37,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:37,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:37,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:37,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:37,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:37,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:32:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:37,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:37,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:37,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:32:37,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:37,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 00:32:37,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:37,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:37,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:37,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:32:37,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:37,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:32:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:37,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:37,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:37,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:32:37,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:37,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 00:32:37,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:37,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:37,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:37,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:32:37,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-27 00:32:38,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332991965] [2020-10-27 00:32:38,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:38,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:32:38,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210028066] [2020-10-27 00:32:38,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:38,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:38,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:38,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:38,443 INFO L87 Difference]: Start difference. First operand 25580 states and 29094 transitions. Second operand 7 states. [2020-10-27 00:32:54,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:54,265 INFO L93 Difference]: Finished difference Result 56286 states and 65459 transitions. [2020-10-27 00:32:54,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:32:54,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1088 [2020-10-27 00:32:54,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:54,356 INFO L225 Difference]: With dead ends: 56286 [2020-10-27 00:32:54,356 INFO L226 Difference]: Without dead ends: 32124 [2020-10-27 00:32:54,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:32:54,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32124 states. [2020-10-27 00:32:55,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32124 to 32026. [2020-10-27 00:32:55,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32026 states. [2020-10-27 00:32:55,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32026 states to 32026 states and 36185 transitions. [2020-10-27 00:32:55,078 INFO L78 Accepts]: Start accepts. Automaton has 32026 states and 36185 transitions. Word has length 1088 [2020-10-27 00:32:55,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:55,080 INFO L481 AbstractCegarLoop]: Abstraction has 32026 states and 36185 transitions. [2020-10-27 00:32:55,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:55,080 INFO L276 IsEmpty]: Start isEmpty. Operand 32026 states and 36185 transitions. [2020-10-27 00:32:55,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1103 [2020-10-27 00:32:55,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:55,097 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:32:55,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:32:55,097 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:55,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:55,098 INFO L82 PathProgramCache]: Analyzing trace with hash 426801714, now seen corresponding path program 1 times [2020-10-27 00:32:55,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:55,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783309814] [2020-10-27 00:32:55,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:55,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:56,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:56,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1126 [2020-10-27 00:32:56,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:56,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1222 [2020-10-27 00:32:56,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:56,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:56,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-27 00:32:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 00:32:56,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:57,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:57,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:57,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:57,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:57,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:57,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:32:57,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:57,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:57,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:57,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:57,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:57,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:32:57,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:57,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 00:32:57,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:57,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:57,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:57,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:57,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:57,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:57,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:57,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:57,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:32:57,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:57,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 00:32:57,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:57,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:57,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:57,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:57,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:57,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:32:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:57,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:57,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:57,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:32:57,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:57,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:32:57,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:57,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:57,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:57,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:32:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:57,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:57,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:57,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:32:57,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:57,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:32:57,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:57,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:57,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:57,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:57,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:57,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:57,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:57,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:57,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:32:57,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:57,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:32:57,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:57,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:57,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:57,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:57,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:57,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:32:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:57,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:57,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:57,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:32:57,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:57,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:32:57,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:57,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:57,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:57,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:57,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:57,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:32:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:57,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:57,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:57,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 00:32:57,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:57,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:32:57,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:57,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:57,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:57,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:32:57,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:58,307 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2020-10-27 00:32:58,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783309814] [2020-10-27 00:32:58,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:58,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 00:32:58,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844420957] [2020-10-27 00:32:58,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:32:58,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:58,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:32:58,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:32:58,309 INFO L87 Difference]: Start difference. First operand 32026 states and 36185 transitions. Second operand 5 states. [2020-10-27 00:33:08,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:08,166 INFO L93 Difference]: Finished difference Result 72549 states and 83392 transitions. [2020-10-27 00:33:08,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:33:08,172 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1102 [2020-10-27 00:33:08,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:08,295 INFO L225 Difference]: With dead ends: 72549 [2020-10-27 00:33:08,296 INFO L226 Difference]: Without dead ends: 41941 [2020-10-27 00:33:08,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:33:08,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41941 states. [2020-10-27 00:33:09,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41941 to 41914. [2020-10-27 00:33:09,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41914 states. [2020-10-27 00:33:09,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41914 states to 41914 states and 46727 transitions. [2020-10-27 00:33:09,297 INFO L78 Accepts]: Start accepts. Automaton has 41914 states and 46727 transitions. Word has length 1102 [2020-10-27 00:33:09,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:09,298 INFO L481 AbstractCegarLoop]: Abstraction has 41914 states and 46727 transitions. [2020-10-27 00:33:09,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:33:09,298 INFO L276 IsEmpty]: Start isEmpty. Operand 41914 states and 46727 transitions. [2020-10-27 00:33:09,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1200 [2020-10-27 00:33:09,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:09,322 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:33:09,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:33:09,323 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:09,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:09,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1653788692, now seen corresponding path program 1 times [2020-10-27 00:33:09,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:09,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907682629] [2020-10-27 00:33:09,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:33:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:09,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:10,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:13,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:13,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1225 [2020-10-27 00:33:13,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:33:13,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3900 [2020-10-27 00:33:13,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:13,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:13,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-27 00:33:13,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 00:33:13,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:13,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:33:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:13,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:13,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:13,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:33:13,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:13,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:33:13,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:13,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:13,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:13,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:13,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:33:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:13,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:13,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:13,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:33:13,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:13,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 00:33:13,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:13,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:13,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:13,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:13,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:13,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:13,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:14,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:14,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:33:14,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:14,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:33:14,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:14,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:14,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:14,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:14,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:14,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:33:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:14,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:14,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:14,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:33:14,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:14,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:33:14,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:14,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:14,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:33:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:14,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:14,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:14,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:33:14,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:14,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 00:33:14,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:14,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:14,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:14,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:14,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:14,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:14,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:14,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:14,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:33:14,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:14,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:33:14,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:14,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:14,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:14,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:33:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:14,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:14,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:14,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:33:14,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:14,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:33:14,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:14,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:14,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:14,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:14,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:14,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:33:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:14,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:14,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:14,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 00:33:14,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:14,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:33:14,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:14,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:14,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:14,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:33:14,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:14,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2020-10-27 00:33:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:14,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:14,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:14,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:33:14,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:14,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 00:33:14,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:14,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:14,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:14,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:33:14,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:15,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 421 proven. 2 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2020-10-27 00:33:15,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907682629] [2020-10-27 00:33:15,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:33:15,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:33:15,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988816524] [2020-10-27 00:33:15,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:33:15,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:33:15,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:33:15,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:33:15,388 INFO L87 Difference]: Start difference. First operand 41914 states and 46727 transitions. Second operand 7 states. [2020-10-27 00:33:27,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:27,990 INFO L93 Difference]: Finished difference Result 96100 states and 108640 transitions. [2020-10-27 00:33:27,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:33:27,992 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1199 [2020-10-27 00:33:27,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:28,162 INFO L225 Difference]: With dead ends: 96100 [2020-10-27 00:33:28,162 INFO L226 Difference]: Without dead ends: 54894 [2020-10-27 00:33:28,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:33:28,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54894 states. [2020-10-27 00:33:29,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54894 to 54125. [2020-10-27 00:33:29,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54125 states. [2020-10-27 00:33:29,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54125 states to 54125 states and 60238 transitions. [2020-10-27 00:33:29,170 INFO L78 Accepts]: Start accepts. Automaton has 54125 states and 60238 transitions. Word has length 1199 [2020-10-27 00:33:29,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:29,172 INFO L481 AbstractCegarLoop]: Abstraction has 54125 states and 60238 transitions. [2020-10-27 00:33:29,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:33:29,172 INFO L276 IsEmpty]: Start isEmpty. Operand 54125 states and 60238 transitions. [2020-10-27 00:33:29,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1207 [2020-10-27 00:33:29,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:29,191 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:33:29,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 00:33:29,191 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:29,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:29,192 INFO L82 PathProgramCache]: Analyzing trace with hash -2126466506, now seen corresponding path program 1 times [2020-10-27 00:33:29,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:29,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544372324] [2020-10-27 00:33:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:33:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:30,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:30,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:32,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking...