/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/Problem15_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:41:54,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:41:54,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:41:54,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:41:54,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:41:54,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:41:54,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:41:54,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:41:54,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:41:54,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:41:54,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:41:54,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:41:54,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:41:54,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:41:54,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:41:54,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:41:54,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:41:54,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:41:54,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:41:54,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:41:54,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:41:54,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:41:54,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:41:54,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:41:54,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:41:54,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:41:54,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:41:54,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:41:54,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:41:54,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:41:54,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:41:54,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:41:54,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:41:54,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:41:54,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:41:54,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:41:54,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:41:54,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:41:54,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:41:54,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:41:54,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:41:54,540 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 [2020-10-26 23:41:54,593 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:41:54,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:41:54,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:41:54,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:41:54,596 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:41:54,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:41:54,597 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:41:54,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:41:54,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:41:54,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:41:54,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:41:54,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:41:54,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:41:54,601 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:41:54,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:41:54,602 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:41:54,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:41:54,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:41:54,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:41:54,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:41:54,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:41:54,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:41:54,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:41:54,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:41:54,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:41:54,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:41:54,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:41:54,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:41:54,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:41:54,605 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:41:55,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:41:55,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:41:55,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:41:55,051 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:41:55,052 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:41:55,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label30.c [2020-10-26 23:41:55,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2efaf8fd/87b518d0aee04022943904cc0519d40d/FLAGe449a9a7f [2020-10-26 23:41:55,953 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:41:55,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label30.c [2020-10-26 23:41:55,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2efaf8fd/87b518d0aee04022943904cc0519d40d/FLAGe449a9a7f [2020-10-26 23:41:56,145 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2efaf8fd/87b518d0aee04022943904cc0519d40d [2020-10-26 23:41:56,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:41:56,160 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:41:56,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:41:56,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:41:56,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:41:56,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:41:56" (1/1) ... [2020-10-26 23:41:56,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cfc022e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:56, skipping insertion in model container [2020-10-26 23:41:56,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:41:56" (1/1) ... [2020-10-26 23:41:56,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:41:56,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:41:57,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:41:57,460 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:41:57,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:41:57,822 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:41:57,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:57 WrapperNode [2020-10-26 23:41:57,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:41:57,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:41:57,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:41:57,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:41:57,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:57" (1/1) ... [2020-10-26 23:41:57,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:57" (1/1) ... [2020-10-26 23:41:57,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:57" (1/1) ... [2020-10-26 23:41:57,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:57" (1/1) ... [2020-10-26 23:41:58,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:57" (1/1) ... [2020-10-26 23:41:58,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:57" (1/1) ... [2020-10-26 23:41:58,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:57" (1/1) ... [2020-10-26 23:41:58,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:41:58,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:41:58,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:41:58,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:41:58,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:57" (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 [2020-10-26 23:41:58,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:41:58,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:41:58,324 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:41:58,324 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:41:58,325 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:41:58,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:41:58,327 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:41:58,328 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:41:58,328 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:41:58,329 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:41:58,330 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:41:58,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:41:58,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:41:58,330 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:41:58,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:41:58,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:41:58,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:41:58,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:41:58,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:41:58,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:41:58,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:42:02,221 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:42:02,221 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:42:02,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:42:02 BoogieIcfgContainer [2020-10-26 23:42:02,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:42:02,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:42:02,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:42:02,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:42:02,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:41:56" (1/3) ... [2020-10-26 23:42:02,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b7862a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:42:02, skipping insertion in model container [2020-10-26 23:42:02,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:57" (2/3) ... [2020-10-26 23:42:02,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b7862a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:42:02, skipping insertion in model container [2020-10-26 23:42:02,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:42:02" (3/3) ... [2020-10-26 23:42:02,237 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label30.c [2020-10-26 23:42:02,253 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:42:02,261 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:42:02,279 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:42:02,319 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:42:02,319 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:42:02,320 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:42:02,320 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:42:02,320 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:42:02,320 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:42:02,320 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:42:02,320 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:42:02,355 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-26 23:42:02,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 23:42:02,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:42:02,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:42:02,365 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:42:02,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:42:02,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1307243393, now seen corresponding path program 1 times [2020-10-26 23:42:02,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:42:02,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131657720] [2020-10-26 23:42:02,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:42:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:02,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:03,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:03,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-26 23:42:03,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:03,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 775 [2020-10-26 23:42:03,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:03,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:42:03,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:42:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 23:42:03,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:42:03,741 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:42:03,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:42:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:03,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:03,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:03,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:42:03,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:03,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:42:03,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:03,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:42:03,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:42:03,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:42:03,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:42:03,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:42:03,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131657720] [2020-10-26 23:42:03,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:42:03,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:42:03,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525048141] [2020-10-26 23:42:03,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:42:03,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:42:03,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:42:03,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:42:03,861 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-26 23:42:04,040 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:42:13,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:42:13,428 INFO L93 Difference]: Finished difference Result 1208 states and 2172 transitions. [2020-10-26 23:42:13,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:42:13,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-26 23:42:13,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:42:13,463 INFO L225 Difference]: With dead ends: 1208 [2020-10-26 23:42:13,463 INFO L226 Difference]: Without dead ends: 703 [2020-10-26 23:42:13,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:42:13,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-26 23:42:13,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 697. [2020-10-26 23:42:13,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-26 23:42:13,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1016 transitions. [2020-10-26 23:42:13,624 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1016 transitions. Word has length 21 [2020-10-26 23:42:13,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:42:13,624 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 1016 transitions. [2020-10-26 23:42:13,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:42:13,625 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1016 transitions. [2020-10-26 23:42:13,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-26 23:42:13,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:42:13,635 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:42:13,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:42:13,635 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:42:13,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:42:13,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1428891196, now seen corresponding path program 1 times [2020-10-26 23:42:13,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:42:13,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353906246] [2020-10-26 23:42:13,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:42:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:13,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:14,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:15,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:15,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:15,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:42:15,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:42:15,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1651 [2020-10-26 23:42:15,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:15,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:42:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:42:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-26 23:42:15,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:42:15,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:42:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:15,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:15,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:15,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:42:15,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:15,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:42:15,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:15,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:42:15,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:42:15,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:42:15,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:15,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:42:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:15,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:15,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:15,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:15,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:42:15,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:42:15,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-26 23:42:15,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:15,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:42:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:42:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:42:15,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 23:42:16,034 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:42:16,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353906246] [2020-10-26 23:42:16,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:42:16,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:42:16,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477661571] [2020-10-26 23:42:16,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:42:16,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:42:16,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:42:16,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:42:16,040 INFO L87 Difference]: Start difference. First operand 697 states and 1016 transitions. Second operand 6 states. [2020-10-26 23:42:26,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:42:26,277 INFO L93 Difference]: Finished difference Result 2030 states and 2975 transitions. [2020-10-26 23:42:26,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:42:26,279 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-10-26 23:42:26,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:42:26,288 INFO L225 Difference]: With dead ends: 2030 [2020-10-26 23:42:26,289 INFO L226 Difference]: Without dead ends: 1339 [2020-10-26 23:42:26,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:42:26,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2020-10-26 23:42:26,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1337. [2020-10-26 23:42:26,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1337 states. [2020-10-26 23:42:26,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1730 transitions. [2020-10-26 23:42:26,383 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1730 transitions. Word has length 100 [2020-10-26 23:42:26,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:42:26,384 INFO L481 AbstractCegarLoop]: Abstraction has 1337 states and 1730 transitions. [2020-10-26 23:42:26,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:42:26,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1730 transitions. [2020-10-26 23:42:26,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-26 23:42:26,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:42:26,403 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:42:26,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:42:26,405 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:42:26,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:42:26,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1702436616, now seen corresponding path program 1 times [2020-10-26 23:42:26,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:42:26,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586859006] [2020-10-26 23:42:26,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:42:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:26,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:26,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:26,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:28,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:28,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:29,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:31,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:31,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-26 23:42:31,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:42:31,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-26 23:42:31,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:31,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:42:31,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:42:31,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-26 23:42:31,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:31,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:42:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:31,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:31,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:31,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:42:31,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:31,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:42:31,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:31,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:42:31,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:42:31,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:42:31,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:42:31,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:42:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:31,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:32,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:32,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:42:32,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:32,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-26 23:42:32,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:32,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:42:32,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:42:32,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:42:32,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:32,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:42:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:32,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:32,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:32,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:32,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:32,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:42:32,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:42:32,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-26 23:42:32,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:32,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:42:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:42:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:42:32,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:42:33,087 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:42:33,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586859006] [2020-10-26 23:42:33,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:42:33,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:42:33,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161437620] [2020-10-26 23:42:33,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:42:33,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:42:33,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:42:33,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:42:33,099 INFO L87 Difference]: Start difference. First operand 1337 states and 1730 transitions. Second operand 9 states. [2020-10-26 23:42:33,289 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-26 23:42:47,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:42:47,939 INFO L93 Difference]: Finished difference Result 3386 states and 4814 transitions. [2020-10-26 23:42:47,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-26 23:42:47,940 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 195 [2020-10-26 23:42:47,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:42:47,963 INFO L225 Difference]: With dead ends: 3386 [2020-10-26 23:42:47,964 INFO L226 Difference]: Without dead ends: 2673 [2020-10-26 23:42:47,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2020-10-26 23:42:47,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2673 states. [2020-10-26 23:42:48,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2673 to 2294. [2020-10-26 23:42:48,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2294 states. [2020-10-26 23:42:48,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2294 states to 2294 states and 2947 transitions. [2020-10-26 23:42:48,076 INFO L78 Accepts]: Start accepts. Automaton has 2294 states and 2947 transitions. Word has length 195 [2020-10-26 23:42:48,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:42:48,077 INFO L481 AbstractCegarLoop]: Abstraction has 2294 states and 2947 transitions. [2020-10-26 23:42:48,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:42:48,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2294 states and 2947 transitions. [2020-10-26 23:42:48,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-26 23:42:48,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:42:48,084 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:42:48,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:42:48,085 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:42:48,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:42:48,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1065068603, now seen corresponding path program 1 times [2020-10-26 23:42:48,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:42:48,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557889633] [2020-10-26 23:42:48,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:42:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:48,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:48,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:50,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:53,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:53,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-26 23:42:53,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:42:53,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-26 23:42:53,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:42:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:42:53,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 23:42:53,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:53,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:42:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:53,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:53,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:53,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:42:53,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:53,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:42:53,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:42:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:42:53,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:42:53,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:53,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:42:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:53,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:53,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:53,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:42:53,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:53,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-26 23:42:53,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:53,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:42:53,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:42:53,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:42:53,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:54,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 23:42:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:54,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:54,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:54,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-26 23:42:54,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:54,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:42:54,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:54,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:42:54,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-26 23:42:54,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:42:54,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:54,764 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 26 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:42:54,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557889633] [2020-10-26 23:42:54,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:42:54,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:42:54,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135817694] [2020-10-26 23:42:54,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:42:54,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:42:54,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:42:54,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:42:54,775 INFO L87 Difference]: Start difference. First operand 2294 states and 2947 transitions. Second operand 7 states. [2020-10-26 23:43:06,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:43:06,677 INFO L93 Difference]: Finished difference Result 4314 states and 5636 transitions. [2020-10-26 23:43:06,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:43:06,682 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 306 [2020-10-26 23:43:06,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:43:06,697 INFO L225 Difference]: With dead ends: 4314 [2020-10-26 23:43:06,698 INFO L226 Difference]: Without dead ends: 2333 [2020-10-26 23:43:06,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:43:06,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2020-10-26 23:43:06,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 2298. [2020-10-26 23:43:06,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2298 states. [2020-10-26 23:43:06,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 2946 transitions. [2020-10-26 23:43:06,780 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 2946 transitions. Word has length 306 [2020-10-26 23:43:06,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:43:06,781 INFO L481 AbstractCegarLoop]: Abstraction has 2298 states and 2946 transitions. [2020-10-26 23:43:06,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:43:06,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 2946 transitions. [2020-10-26 23:43:06,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-26 23:43:06,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:43:06,790 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:43:06,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:43:06,791 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:43:06,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:43:06,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1188831012, now seen corresponding path program 1 times [2020-10-26 23:43:06,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:43:06,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992451652] [2020-10-26 23:43:06,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:43:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:06,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:07,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:08,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:08,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-26 23:43:08,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:43:08,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1768 [2020-10-26 23:43:08,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:08,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:08,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:43:08,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-26 23:43:08,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-26 23:43:08,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:43:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:08,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:08,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:08,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:43:08,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:08,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:43:08,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:08,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:43:08,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:43:08,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:43:08,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:43:08,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:43:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:09,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:09,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:09,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:43:09,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:09,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-26 23:43:09,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:09,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:43:09,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:43:09,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:43:09,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:09,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:43:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:09,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:09,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:09,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-26 23:43:09,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:09,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-26 23:43:09,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:09,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:09,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:09,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:43:09,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:10,160 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:43:10,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992451652] [2020-10-26 23:43:10,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:43:10,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:43:10,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324281181] [2020-10-26 23:43:10,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:43:10,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:43:10,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:43:10,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:43:10,165 INFO L87 Difference]: Start difference. First operand 2298 states and 2946 transitions. Second operand 8 states. [2020-10-26 23:43:28,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:43:28,491 INFO L93 Difference]: Finished difference Result 5937 states and 8456 transitions. [2020-10-26 23:43:28,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:43:28,495 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 380 [2020-10-26 23:43:28,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:43:28,518 INFO L225 Difference]: With dead ends: 5937 [2020-10-26 23:43:28,518 INFO L226 Difference]: Without dead ends: 4261 [2020-10-26 23:43:28,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:43:28,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4261 states. [2020-10-26 23:43:28,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4261 to 4225. [2020-10-26 23:43:28,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4225 states. [2020-10-26 23:43:28,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4225 states to 4225 states and 5609 transitions. [2020-10-26 23:43:28,653 INFO L78 Accepts]: Start accepts. Automaton has 4225 states and 5609 transitions. Word has length 380 [2020-10-26 23:43:28,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:43:28,654 INFO L481 AbstractCegarLoop]: Abstraction has 4225 states and 5609 transitions. [2020-10-26 23:43:28,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:43:28,654 INFO L276 IsEmpty]: Start isEmpty. Operand 4225 states and 5609 transitions. [2020-10-26 23:43:28,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-26 23:43:28,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:43:28,663 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:43:28,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:43:28,663 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:43:28,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:43:28,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1654293866, now seen corresponding path program 1 times [2020-10-26 23:43:28,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:43:28,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44932749] [2020-10-26 23:43:28,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:43:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:28,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:29,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:29,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:29,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:30,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:33,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:33,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-26 23:43:33,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:43:33,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-26 23:43:33,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:43:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:43:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 381 [2020-10-26 23:43:33,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:33,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:43:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:33,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:34,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:34,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:43:34,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:34,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:43:34,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:43:34,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:43:34,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:43:34,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:34,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:43:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:34,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:34,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:34,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:43:34,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:34,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-26 23:43:34,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:43:34,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:43:34,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:43:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:34,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:34,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:34,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:43:34,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:34,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-26 23:43:34,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:34,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:34,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:34,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:43:34,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:35,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:43:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:35,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:35,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:35,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:43:35,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:35,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-26 23:43:35,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:35,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:35,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:35,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:43:35,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:35,551 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 41 proven. 4 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2020-10-26 23:43:35,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44932749] [2020-10-26 23:43:35,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:43:35,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:43:35,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814054679] [2020-10-26 23:43:35,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:43:35,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:43:35,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:43:35,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:43:35,555 INFO L87 Difference]: Start difference. First operand 4225 states and 5609 transitions. Second operand 7 states. [2020-10-26 23:43:47,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:43:47,637 INFO L93 Difference]: Finished difference Result 8515 states and 11788 transitions. [2020-10-26 23:43:47,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:43:47,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 392 [2020-10-26 23:43:47,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:43:47,668 INFO L225 Difference]: With dead ends: 8515 [2020-10-26 23:43:47,669 INFO L226 Difference]: Without dead ends: 5843 [2020-10-26 23:43:47,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:43:47,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5843 states. [2020-10-26 23:43:47,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5843 to 5471. [2020-10-26 23:43:47,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5471 states. [2020-10-26 23:43:47,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5471 states to 5471 states and 6999 transitions. [2020-10-26 23:43:47,841 INFO L78 Accepts]: Start accepts. Automaton has 5471 states and 6999 transitions. Word has length 392 [2020-10-26 23:43:47,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:43:47,842 INFO L481 AbstractCegarLoop]: Abstraction has 5471 states and 6999 transitions. [2020-10-26 23:43:47,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:43:47,843 INFO L276 IsEmpty]: Start isEmpty. Operand 5471 states and 6999 transitions. [2020-10-26 23:43:47,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-26 23:43:47,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:43:47,854 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:43:47,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:43:47,854 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:43:47,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:43:47,855 INFO L82 PathProgramCache]: Analyzing trace with hash -265788770, now seen corresponding path program 1 times [2020-10-26 23:43:47,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:43:47,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544321173] [2020-10-26 23:43:47,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:43:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:48,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:48,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:50,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:50,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-26 23:43:50,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:43:50,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2835 [2020-10-26 23:43:50,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:43:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 23:43:50,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:51,029 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:43:51,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:43:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:51,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:51,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:51,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:43:51,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:51,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:43:51,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:51,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:43:51,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:43:51,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:43:51,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:51,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:43:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:51,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:51,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:51,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:43:51,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:51,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-26 23:43:51,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:51,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:43:51,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:43:51,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:43:51,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:51,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:43:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:51,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:51,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:51,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:43:51,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:51,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-26 23:43:51,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:51,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:51,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:51,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:43:51,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:43:52,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544321173] [2020-10-26 23:43:52,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:43:52,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:43:52,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893979201] [2020-10-26 23:43:52,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:43:52,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:43:52,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:43:52,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:43:52,683 INFO L87 Difference]: Start difference. First operand 5471 states and 6999 transitions. Second operand 8 states. [2020-10-26 23:44:04,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:44:04,012 INFO L93 Difference]: Finished difference Result 13219 states and 16928 transitions. [2020-10-26 23:44:04,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:44:04,014 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 406 [2020-10-26 23:44:04,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:44:04,057 INFO L225 Difference]: With dead ends: 13219 [2020-10-26 23:44:04,058 INFO L226 Difference]: Without dead ends: 8061 [2020-10-26 23:44:04,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:44:04,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8061 states. [2020-10-26 23:44:04,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8061 to 7696. [2020-10-26 23:44:04,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7696 states. [2020-10-26 23:44:04,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7696 states to 7696 states and 9571 transitions. [2020-10-26 23:44:04,334 INFO L78 Accepts]: Start accepts. Automaton has 7696 states and 9571 transitions. Word has length 406 [2020-10-26 23:44:04,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:44:04,335 INFO L481 AbstractCegarLoop]: Abstraction has 7696 states and 9571 transitions. [2020-10-26 23:44:04,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:44:04,336 INFO L276 IsEmpty]: Start isEmpty. Operand 7696 states and 9571 transitions. [2020-10-26 23:44:04,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-26 23:44:04,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:44:04,344 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:44:04,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:44:04,344 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:44:04,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:44:04,345 INFO L82 PathProgramCache]: Analyzing trace with hash -275248730, now seen corresponding path program 1 times [2020-10-26 23:44:04,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:44:04,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462570490] [2020-10-26 23:44:04,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:44:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:04,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:05,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:05,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 432 [2020-10-26 23:44:05,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:05,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 883 [2020-10-26 23:44:05,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:05,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:05,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:44:05,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-26 23:44:05,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:05,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:44:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:05,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:05,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:05,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:44:05,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:05,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:44:05,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:05,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:05,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:05,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:05,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:05,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:44:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:05,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:05,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:05,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:44:05,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:05,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 23:44:05,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:05,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:05,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:05,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:05,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:05,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:44:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:05,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:06,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:06,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:44:06,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:06,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 23:44:06,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:06,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:44:06,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:06,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:44:06,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:06,259 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-26 23:44:06,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462570490] [2020-10-26 23:44:06,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:44:06,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:44:06,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480276503] [2020-10-26 23:44:06,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:44:06,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:44:06,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:44:06,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:44:06,264 INFO L87 Difference]: Start difference. First operand 7696 states and 9571 transitions. Second operand 5 states. [2020-10-26 23:44:17,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:44:17,822 INFO L93 Difference]: Finished difference Result 14244 states and 19158 transitions. [2020-10-26 23:44:17,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:44:17,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 418 [2020-10-26 23:44:17,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:44:17,887 INFO L225 Difference]: With dead ends: 14244 [2020-10-26 23:44:17,888 INFO L226 Difference]: Without dead ends: 10291 [2020-10-26 23:44:17,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:44:17,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10291 states. [2020-10-26 23:44:18,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10291 to 10272. [2020-10-26 23:44:18,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10272 states. [2020-10-26 23:44:18,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10272 states to 10272 states and 13270 transitions. [2020-10-26 23:44:18,223 INFO L78 Accepts]: Start accepts. Automaton has 10272 states and 13270 transitions. Word has length 418 [2020-10-26 23:44:18,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:44:18,224 INFO L481 AbstractCegarLoop]: Abstraction has 10272 states and 13270 transitions. [2020-10-26 23:44:18,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:44:18,224 INFO L276 IsEmpty]: Start isEmpty. Operand 10272 states and 13270 transitions. [2020-10-26 23:44:18,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2020-10-26 23:44:18,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:44:18,237 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:44:18,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:44:18,237 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:44:18,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:44:18,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1492164966, now seen corresponding path program 1 times [2020-10-26 23:44:18,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:44:18,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773246150] [2020-10-26 23:44:18,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:44:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:18,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:18,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:18,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:19,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:22,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:23,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:23,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 490 [2020-10-26 23:44:23,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:44:23,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-26 23:44:23,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:23,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:23,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:44:23,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-26 23:44:23,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:23,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:44:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:23,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:23,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:23,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:44:23,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:23,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:44:23,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:23,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:23,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:44:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:23,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:23,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:23,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:44:23,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:23,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 23:44:23,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:23,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:44:23,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:23,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:44:23,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:23,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:44:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:23,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:24,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:24,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:44:24,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:24,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-26 23:44:24,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:44:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:44:24,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:24,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:44:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:24,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:24,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:24,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:44:24,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:24,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:44:24,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:44:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:24,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:24,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-26 23:44:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:24,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:24,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:24,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:44:24,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:24,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:44:24,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:24,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:24,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 23:44:24,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:24,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:24,641 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 152 proven. 152 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-26 23:44:24,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773246150] [2020-10-26 23:44:24,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:44:24,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:44:24,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913144030] [2020-10-26 23:44:24,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:44:24,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:44:24,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:44:24,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:44:24,645 INFO L87 Difference]: Start difference. First operand 10272 states and 13270 transitions. Second operand 7 states. [2020-10-26 23:44:39,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:44:39,822 INFO L93 Difference]: Finished difference Result 22506 states and 29901 transitions. [2020-10-26 23:44:39,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:44:39,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 472 [2020-10-26 23:44:39,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:44:39,871 INFO L225 Difference]: With dead ends: 22506 [2020-10-26 23:44:39,872 INFO L226 Difference]: Without dead ends: 12542 [2020-10-26 23:44:39,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:44:39,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12542 states. [2020-10-26 23:44:40,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12542 to 12528. [2020-10-26 23:44:40,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12528 states. [2020-10-26 23:44:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12528 states to 12528 states and 16128 transitions. [2020-10-26 23:44:40,238 INFO L78 Accepts]: Start accepts. Automaton has 12528 states and 16128 transitions. Word has length 472 [2020-10-26 23:44:40,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:44:40,239 INFO L481 AbstractCegarLoop]: Abstraction has 12528 states and 16128 transitions. [2020-10-26 23:44:40,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:44:40,239 INFO L276 IsEmpty]: Start isEmpty. Operand 12528 states and 16128 transitions. [2020-10-26 23:44:40,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-10-26 23:44:40,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:44:40,246 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:44:40,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:44:40,247 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:44:40,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:44:40,247 INFO L82 PathProgramCache]: Analyzing trace with hash 579013082, now seen corresponding path program 1 times [2020-10-26 23:44:40,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:44:40,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252103833] [2020-10-26 23:44:40,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:44:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:40,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:41,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:41,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 510 [2020-10-26 23:44:41,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:41,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-10-26 23:44:41,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:44:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:44:41,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:41,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:44:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:41,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:41,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:41,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:44:41,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:41,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:44:41,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:41,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:41,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:41,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:41,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:41,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:44:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:41,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:41,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:41,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:44:41,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:41,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 23:44:41,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:41,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:41,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:41,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:41,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:41,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:44:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:41,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:41,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:41,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:44:41,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:41,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 23:44:41,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:41,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:44:41,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:41,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:44:41,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:42,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:44:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:42,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:42,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:42,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:44:42,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:42,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 23:44:42,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:42,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:42,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:44:42,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:44:42,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:42,520 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:44:42,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252103833] [2020-10-26 23:44:42,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:44:42,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:44:42,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338088572] [2020-10-26 23:44:42,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:44:42,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:44:42,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:44:42,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:44:42,523 INFO L87 Difference]: Start difference. First operand 12528 states and 16128 transitions. Second operand 7 states. [2020-10-26 23:44:56,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:44:56,953 INFO L93 Difference]: Finished difference Result 25062 states and 34204 transitions. [2020-10-26 23:44:56,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:44:56,956 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 494 [2020-10-26 23:44:56,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:44:57,026 INFO L225 Difference]: With dead ends: 25062 [2020-10-26 23:44:57,027 INFO L226 Difference]: Without dead ends: 15961 [2020-10-26 23:44:57,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:44:57,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15961 states. [2020-10-26 23:44:57,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15961 to 15337. [2020-10-26 23:44:57,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15337 states. [2020-10-26 23:44:57,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15337 states to 15337 states and 20055 transitions. [2020-10-26 23:44:57,480 INFO L78 Accepts]: Start accepts. Automaton has 15337 states and 20055 transitions. Word has length 494 [2020-10-26 23:44:57,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:44:57,481 INFO L481 AbstractCegarLoop]: Abstraction has 15337 states and 20055 transitions. [2020-10-26 23:44:57,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:44:57,481 INFO L276 IsEmpty]: Start isEmpty. Operand 15337 states and 20055 transitions. [2020-10-26 23:44:57,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2020-10-26 23:44:57,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:44:57,493 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:44:57,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:44:57,494 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:44:57,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:44:57,496 INFO L82 PathProgramCache]: Analyzing trace with hash 933808326, now seen corresponding path program 1 times [2020-10-26 23:44:57,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:44:57,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623857206] [2020-10-26 23:44:57,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:44:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:57,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:58,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:00,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:00,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 558 [2020-10-26 23:45:00,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:45:00,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3257 [2020-10-26 23:45:00,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:00,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:00,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:45:00,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 23:45:00,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:01,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:01,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:01,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:01,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:01,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:01,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:45:01,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:01,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:01,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:01,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:01,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:01,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:01,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:01,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:01,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:45:01,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:01,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-26 23:45:01,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:01,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:01,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:01,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:01,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:01,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:45:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:01,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:01,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:01,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:45:01,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:01,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-26 23:45:01,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:01,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:01,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:01,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:45:01,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:01,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:45:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:01,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:01,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:01,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-26 23:45:01,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:01,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-26 23:45:01,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:01,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:01,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:01,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 23:45:01,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:45:02,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623857206] [2020-10-26 23:45:02,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:45:02,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:45:02,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61725639] [2020-10-26 23:45:02,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:45:02,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:02,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:45:02,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:45:02,149 INFO L87 Difference]: Start difference. First operand 15337 states and 20055 transitions. Second operand 7 states. [2020-10-26 23:45:20,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:45:20,900 INFO L93 Difference]: Finished difference Result 33210 states and 44481 transitions. [2020-10-26 23:45:20,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:45:20,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 542 [2020-10-26 23:45:20,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:45:20,967 INFO L225 Difference]: With dead ends: 33210 [2020-10-26 23:45:20,967 INFO L226 Difference]: Without dead ends: 18495 [2020-10-26 23:45:21,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:45:21,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18495 states. [2020-10-26 23:45:21,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18495 to 18486. [2020-10-26 23:45:21,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18486 states. [2020-10-26 23:45:21,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18486 states to 18486 states and 23945 transitions. [2020-10-26 23:45:21,475 INFO L78 Accepts]: Start accepts. Automaton has 18486 states and 23945 transitions. Word has length 542 [2020-10-26 23:45:21,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:45:21,476 INFO L481 AbstractCegarLoop]: Abstraction has 18486 states and 23945 transitions. [2020-10-26 23:45:21,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:45:21,476 INFO L276 IsEmpty]: Start isEmpty. Operand 18486 states and 23945 transitions. [2020-10-26 23:45:21,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2020-10-26 23:45:21,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:21,489 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:45:21,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:45:21,489 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:21,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:21,490 INFO L82 PathProgramCache]: Analyzing trace with hash 522180044, now seen corresponding path program 1 times [2020-10-26 23:45:21,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:21,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587079732] [2020-10-26 23:45:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:21,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:21,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:24,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:26,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:26,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 599 [2020-10-26 23:45:26,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:45:26,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4395 [2020-10-26 23:45:26,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:26,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:45:26,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-26 23:45:26,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-26 23:45:26,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:26,378 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:45:26,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:26,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:26,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:26,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:26,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:26,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:45:26,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:26,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:26,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:26,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:26,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:26,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:26,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:26,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:26,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:45:26,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:26,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-26 23:45:26,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-26 23:45:26,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:26,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:45:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:26,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:27,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:27,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:45:27,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:27,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-26 23:45:27,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:27,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:45:27,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:27,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:45:27,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:27,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:45:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:27,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:27,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:27,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:45:27,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:27,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-26 23:45:27,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:27,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:27,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:27,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:45:27,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:27,997 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 413 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:45:27,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587079732] [2020-10-26 23:45:27,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:45:27,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:45:27,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252931313] [2020-10-26 23:45:27,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:45:27,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:27,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:45:28,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:45:28,009 INFO L87 Difference]: Start difference. First operand 18486 states and 23945 transitions. Second operand 10 states.