/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:34:57,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:34:57,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:34:57,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:34:57,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:34:57,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:34:57,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:34:57,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:34:57,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:34:57,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:34:57,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:34:57,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:34:57,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:34:57,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:34:57,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:34:57,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:34:57,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:34:57,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:34:57,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:34:57,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:34:57,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:34:57,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:34:57,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:34:57,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:34:57,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:34:57,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:34:57,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:34:57,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:34:57,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:34:57,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:34:57,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:34:57,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:34:57,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:34:57,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:34:57,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:34:57,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:34:57,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:34:57,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:34:57,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:34:57,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:34:57,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:34:57,481 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 10:34:57,511 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:34:57,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:34:57,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:34:57,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:34:57,514 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:34:57,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:34:57,514 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:34:57,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:34:57,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:34:57,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:34:57,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:34:57,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:34:57,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:34:57,515 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:34:57,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:34:57,516 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:34:57,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:34:57,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:34:57,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:34:57,517 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:34:57,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:34:57,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:34:57,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:34:57,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:34:57,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:34:57,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:34:57,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:34:57,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:34:57,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:34:57,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:34:57,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:34:57,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:34:57,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:34:57,967 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:34:57,968 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:34:57,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label48.c [2020-10-28 10:34:58,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79269a780/44726b96b06747918d64feec827f05a7/FLAGaa88b2cf8 [2020-10-28 10:34:59,101 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:34:59,102 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label48.c [2020-10-28 10:34:59,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79269a780/44726b96b06747918d64feec827f05a7/FLAGaa88b2cf8 [2020-10-28 10:34:59,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79269a780/44726b96b06747918d64feec827f05a7 [2020-10-28 10:34:59,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:34:59,562 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:34:59,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:34:59,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:34:59,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:34:59,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:34:59" (1/1) ... [2020-10-28 10:34:59,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c0c85e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:59, skipping insertion in model container [2020-10-28 10:34:59,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:34:59" (1/1) ... [2020-10-28 10:34:59,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:34:59,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:35:01,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:35:01,360 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:35:02,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:35:02,060 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:35:02,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:35:02 WrapperNode [2020-10-28 10:35:02,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:35:02,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:35:02,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:35:02,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:35:02,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:35:02" (1/1) ... [2020-10-28 10:35:02,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:35:02" (1/1) ... [2020-10-28 10:35:02,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:35:02" (1/1) ... [2020-10-28 10:35:02,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:35:02" (1/1) ... [2020-10-28 10:35:02,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:35:02" (1/1) ... [2020-10-28 10:35:02,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:35:02" (1/1) ... [2020-10-28 10:35:02,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:35:02" (1/1) ... [2020-10-28 10:35:02,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:35:02,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:35:02,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:35:02,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:35:02,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:35:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:35:02,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:35:02,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:35:02,507 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:35:02,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:35:02,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:35:02,508 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:35:02,508 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:35:02,508 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:35:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:35:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:35:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:35:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:35:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:35:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:35:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:35:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:35:02,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:35:02,552 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:35:02,553 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:35:02,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:35:02,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:35:02,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:35:02,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:35:02,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:35:02,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:35:07,569 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:35:07,569 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:35:07,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:35:07 BoogieIcfgContainer [2020-10-28 10:35:07,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:35:07,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:35:07,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:35:07,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:35:07,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:34:59" (1/3) ... [2020-10-28 10:35:07,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1016012d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:35:07, skipping insertion in model container [2020-10-28 10:35:07,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:35:02" (2/3) ... [2020-10-28 10:35:07,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1016012d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:35:07, skipping insertion in model container [2020-10-28 10:35:07,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:35:07" (3/3) ... [2020-10-28 10:35:07,587 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label48.c [2020-10-28 10:35:07,600 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:35:07,607 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:35:07,621 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:35:07,658 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:35:07,658 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:35:07,658 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:35:07,659 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:35:07,659 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:35:07,659 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:35:07,659 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:35:07,659 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:35:07,698 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-28 10:35:07,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2020-10-28 10:35:07,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:35:07,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:35:07,766 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:35:07,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:35:07,774 INFO L82 PathProgramCache]: Analyzing trace with hash -547915752, now seen corresponding path program 1 times [2020-10-28 10:35:07,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:35:07,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606072585] [2020-10-28 10:35:07,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:35:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:08,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:10,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:13,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:13,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 835 [2020-10-28 10:35:13,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:35:13,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 10:35:13,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:13,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 10:35:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:35:13,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 826 [2020-10-28 10:35:13,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:35:14,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:35:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:14,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:14,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:14,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:35:14,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:14,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 10:35:14,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:14,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:14,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:35:14,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:35:14,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:35:14,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:35:15,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:35:15,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606072585] [2020-10-28 10:35:15,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:35:15,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 10:35:15,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362093569] [2020-10-28 10:35:15,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:35:15,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:35:15,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:35:15,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:35:15,553 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 5 states. [2020-10-28 10:35:32,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:35:32,046 INFO L93 Difference]: Finished difference Result 3526 states and 6832 transitions. [2020-10-28 10:35:32,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 10:35:32,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 819 [2020-10-28 10:35:32,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:35:32,117 INFO L225 Difference]: With dead ends: 3526 [2020-10-28 10:35:32,117 INFO L226 Difference]: Without dead ends: 2548 [2020-10-28 10:35:32,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:35:32,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2020-10-28 10:35:32,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2535. [2020-10-28 10:35:32,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2535 states. [2020-10-28 10:35:32,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 4140 transitions. [2020-10-28 10:35:32,377 INFO L78 Accepts]: Start accepts. Automaton has 2535 states and 4140 transitions. Word has length 819 [2020-10-28 10:35:32,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:35:32,382 INFO L481 AbstractCegarLoop]: Abstraction has 2535 states and 4140 transitions. [2020-10-28 10:35:32,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:35:32,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2535 states and 4140 transitions. [2020-10-28 10:35:32,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2020-10-28 10:35:32,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:35:32,424 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:35:32,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:35:32,425 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:35:32,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:35:32,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1699865089, now seen corresponding path program 1 times [2020-10-28 10:35:32,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:35:32,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881943053] [2020-10-28 10:35:32,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:35:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:32,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:33,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:35,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:37,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:37,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 852 [2020-10-28 10:35:37,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:35:37,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 10:35:37,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:37,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:37,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:35:37,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:35:37,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 10:35:37,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 10:35:37,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:35:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:37,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:38,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:38,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:35:38,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:38,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:35:38,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:38,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:38,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:35:38,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:35:38,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:35:38,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:35:38,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:35:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:38,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:38,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:38,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 10:35:38,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:38,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 10:35:38,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:38,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:38,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:35:38,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:35:38,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 10:35:38,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:35:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:35:38,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881943053] [2020-10-28 10:35:38,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:35:38,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:35:38,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043701757] [2020-10-28 10:35:38,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:35:38,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:35:38,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:35:38,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:35:38,562 INFO L87 Difference]: Start difference. First operand 2535 states and 4140 transitions. Second operand 7 states. [2020-10-28 10:35:38,709 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:35:51,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:35:51,673 INFO L93 Difference]: Finished difference Result 7724 states and 12801 transitions. [2020-10-28 10:35:51,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:35:51,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 834 [2020-10-28 10:35:51,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:35:51,708 INFO L225 Difference]: With dead ends: 7724 [2020-10-28 10:35:51,708 INFO L226 Difference]: Without dead ends: 5195 [2020-10-28 10:35:51,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:35:51,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5195 states. [2020-10-28 10:35:51,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5195 to 5151. [2020-10-28 10:35:51,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5151 states. [2020-10-28 10:35:51,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5151 states to 5151 states and 8090 transitions. [2020-10-28 10:35:51,968 INFO L78 Accepts]: Start accepts. Automaton has 5151 states and 8090 transitions. Word has length 834 [2020-10-28 10:35:51,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:35:51,968 INFO L481 AbstractCegarLoop]: Abstraction has 5151 states and 8090 transitions. [2020-10-28 10:35:51,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:35:51,968 INFO L276 IsEmpty]: Start isEmpty. Operand 5151 states and 8090 transitions. [2020-10-28 10:35:51,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2020-10-28 10:35:51,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:35:51,990 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:35:51,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:35:51,990 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:35:51,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:35:51,993 INFO L82 PathProgramCache]: Analyzing trace with hash 837959606, now seen corresponding path program 1 times [2020-10-28 10:35:51,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:35:51,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900937392] [2020-10-28 10:35:51,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:35:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:52,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:52,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:52,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:57,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:57,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:57,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 903 [2020-10-28 10:35:57,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:35:57,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-28 10:35:57,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:57,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:57,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:35:57,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 10:35:57,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 10:35:57,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:35:57,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:35:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:57,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:57,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:57,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:35:57,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:57,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:35:57,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:57,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:57,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:35:57,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:35:57,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:35:57,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:35:57,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:35:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:57,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:57,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:57,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:35:57,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:57,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:35:57,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:57,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:57,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:35:57,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:35:57,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:35:57,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:35:57,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:35:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:57,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:57,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:57,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 10:35:57,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:57,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 10:35:57,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:57,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:57,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:35:57,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:35:57,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 10:35:57,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:35:57,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 10:35:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:57,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:57,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:57,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 10:35:57,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:57,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 10:35:57,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:57,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:57,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:35:57,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:35:57,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 10:35:57,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:35:58,084 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 10:35:58,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900937392] [2020-10-28 10:35:58,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:35:58,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:35:58,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069916590] [2020-10-28 10:35:58,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:35:58,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:35:58,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:35:58,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:35:58,093 INFO L87 Difference]: Start difference. First operand 5151 states and 8090 transitions. Second operand 7 states. [2020-10-28 10:35:58,547 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:36:06,509 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:36:11,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:36:11,740 INFO L93 Difference]: Finished difference Result 10492 states and 16498 transitions. [2020-10-28 10:36:11,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:36:11,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 881 [2020-10-28 10:36:11,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:36:11,773 INFO L225 Difference]: With dead ends: 10492 [2020-10-28 10:36:11,773 INFO L226 Difference]: Without dead ends: 5347 [2020-10-28 10:36:11,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:36:11,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5347 states. [2020-10-28 10:36:11,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5347 to 5293. [2020-10-28 10:36:11,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5293 states. [2020-10-28 10:36:11,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 7366 transitions. [2020-10-28 10:36:11,960 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 7366 transitions. Word has length 881 [2020-10-28 10:36:11,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:36:11,961 INFO L481 AbstractCegarLoop]: Abstraction has 5293 states and 7366 transitions. [2020-10-28 10:36:11,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:36:11,961 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 7366 transitions. [2020-10-28 10:36:11,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 913 [2020-10-28 10:36:11,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:36:11,986 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:36:11,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:36:11,986 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:36:11,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:36:11,988 INFO L82 PathProgramCache]: Analyzing trace with hash -948554231, now seen corresponding path program 1 times [2020-10-28 10:36:11,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:36:11,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853122959] [2020-10-28 10:36:11,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:36:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:12,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:12,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:12,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:17,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:17,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 932 [2020-10-28 10:36:17,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:36:17,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 10:36:17,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:17,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:36:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 10:36:17,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 10:36:17,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:17,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:36:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:17,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:17,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:17,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:36:17,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:17,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:36:17,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:17,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:17,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:36:17,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:36:17,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:36:17,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:17,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:36:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:17,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:17,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:17,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:36:17,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:17,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:36:17,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:17,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:17,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:36:17,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:36:17,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:36:17,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:17,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:36:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:17,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:17,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:17,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 10:36:17,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:17,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-28 10:36:17,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:17,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:17,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:36:17,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:36:17,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 10:36:17,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:18,362 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:36:18,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853122959] [2020-10-28 10:36:18,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:36:18,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:36:18,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195311549] [2020-10-28 10:36:18,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:36:18,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:36:18,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:36:18,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:36:18,369 INFO L87 Difference]: Start difference. First operand 5293 states and 7366 transitions. Second operand 7 states. [2020-10-28 10:36:18,541 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:36:30,351 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 10:36:33,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:36:33,462 INFO L93 Difference]: Finished difference Result 16042 states and 22903 transitions. [2020-10-28 10:36:33,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 10:36:33,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 912 [2020-10-28 10:36:33,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:36:33,516 INFO L225 Difference]: With dead ends: 16042 [2020-10-28 10:36:33,516 INFO L226 Difference]: Without dead ends: 10755 [2020-10-28 10:36:33,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:36:33,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10755 states. [2020-10-28 10:36:33,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10755 to 10717. [2020-10-28 10:36:33,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10717 states. [2020-10-28 10:36:33,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10717 states to 10717 states and 14759 transitions. [2020-10-28 10:36:33,899 INFO L78 Accepts]: Start accepts. Automaton has 10717 states and 14759 transitions. Word has length 912 [2020-10-28 10:36:33,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:36:33,900 INFO L481 AbstractCegarLoop]: Abstraction has 10717 states and 14759 transitions. [2020-10-28 10:36:33,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:36:33,900 INFO L276 IsEmpty]: Start isEmpty. Operand 10717 states and 14759 transitions. [2020-10-28 10:36:33,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2020-10-28 10:36:33,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:36:33,944 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:36:33,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:36:33,944 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:36:33,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:36:33,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1950811585, now seen corresponding path program 1 times [2020-10-28 10:36:33,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:36:33,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893610253] [2020-10-28 10:36:33,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:36:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:34,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:34,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:38,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:39,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:39,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 992 [2020-10-28 10:36:39,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:36:39,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 10:36:39,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:39,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:39,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:36:39,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:36:39,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 10:36:39,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:39,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:36:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:39,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:39,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:39,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:36:39,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:39,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:36:39,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:39,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:36:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:36:39,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:36:39,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:39,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:36:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:39,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:39,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:39,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 10:36:39,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:39,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-28 10:36:39,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:39,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:39,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:36:39,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:36:39,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 10:36:39,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:39,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 10:36:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:39,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:39,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:39,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 10:36:39,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:39,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:36:39,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:39,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:36:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 10:36:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:36:39,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:40,816 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 147 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 10:36:40,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893610253] [2020-10-28 10:36:40,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:36:40,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:36:40,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66224640] [2020-10-28 10:36:40,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:36:40,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:36:40,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:36:40,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:36:40,819 INFO L87 Difference]: Start difference. First operand 10717 states and 14759 transitions. Second operand 7 states. [2020-10-28 10:36:41,005 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-28 10:36:50,012 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-28 10:36:54,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:36:54,838 INFO L93 Difference]: Finished difference Result 24279 states and 34487 transitions. [2020-10-28 10:36:54,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 10:36:54,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 972 [2020-10-28 10:36:54,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:36:54,905 INFO L225 Difference]: With dead ends: 24279 [2020-10-28 10:36:54,905 INFO L226 Difference]: Without dead ends: 13568 [2020-10-28 10:36:54,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:36:54,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13568 states. [2020-10-28 10:36:55,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13568 to 13436. [2020-10-28 10:36:55,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13436 states. [2020-10-28 10:36:55,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13436 states to 13436 states and 18141 transitions. [2020-10-28 10:36:55,346 INFO L78 Accepts]: Start accepts. Automaton has 13436 states and 18141 transitions. Word has length 972 [2020-10-28 10:36:55,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:36:55,347 INFO L481 AbstractCegarLoop]: Abstraction has 13436 states and 18141 transitions. [2020-10-28 10:36:55,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:36:55,347 INFO L276 IsEmpty]: Start isEmpty. Operand 13436 states and 18141 transitions. [2020-10-28 10:36:55,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2020-10-28 10:36:55,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:36:55,404 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:36:55,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:36:55,404 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:36:55,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:36:55,405 INFO L82 PathProgramCache]: Analyzing trace with hash -57902862, now seen corresponding path program 1 times [2020-10-28 10:36:55,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:36:55,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362199212] [2020-10-28 10:36:55,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:36:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:55,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:55,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:56,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:00,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:00,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1013 [2020-10-28 10:37:00,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:37:00,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-28 10:37:00,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:00,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:00,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:37:00,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 10:37:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 10:37:00,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:00,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:37:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:00,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:00,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:00,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:37:00,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:00,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:37:00,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:00,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:00,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:37:00,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:00,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:37:00,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:00,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:37:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:00,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:00,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:00,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:37:00,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:00,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 10:37:00,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:00,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:00,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:37:00,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:00,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:37:00,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:00,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:37:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:00,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:00,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:01,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:01,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 10:37:01,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:37:01,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 10:37:01,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:01,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:37:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-28 10:37:01,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:01,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-28 10:37:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:01,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:01,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:01,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 10:37:01,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:01,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 10:37:01,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:01,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:01,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:37:01,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:37:01,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 10:37:01,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 204 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-28 10:37:01,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362199212] [2020-10-28 10:37:01,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:37:01,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:37:01,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956075800] [2020-10-28 10:37:01,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:37:01,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:37:01,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:37:01,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:37:01,589 INFO L87 Difference]: Start difference. First operand 13436 states and 18141 transitions. Second operand 7 states. [2020-10-28 10:37:06,422 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:37:15,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:37:15,926 INFO L93 Difference]: Finished difference Result 39870 states and 56113 transitions. [2020-10-28 10:37:15,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:37:15,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 991 [2020-10-28 10:37:15,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:37:16,029 INFO L225 Difference]: With dead ends: 39870 [2020-10-28 10:37:16,029 INFO L226 Difference]: Without dead ends: 26440 [2020-10-28 10:37:16,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:37:16,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26440 states. [2020-10-28 10:37:16,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26440 to 26362. [2020-10-28 10:37:16,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26362 states. [2020-10-28 10:37:16,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26362 states to 26362 states and 33930 transitions. [2020-10-28 10:37:16,848 INFO L78 Accepts]: Start accepts. Automaton has 26362 states and 33930 transitions. Word has length 991 [2020-10-28 10:37:16,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:37:16,849 INFO L481 AbstractCegarLoop]: Abstraction has 26362 states and 33930 transitions. [2020-10-28 10:37:16,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:37:16,849 INFO L276 IsEmpty]: Start isEmpty. Operand 26362 states and 33930 transitions. [2020-10-28 10:37:16,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1074 [2020-10-28 10:37:16,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:37:16,936 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:37:16,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 10:37:16,937 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:37:16,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:37:16,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1954910432, now seen corresponding path program 1 times [2020-10-28 10:37:16,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:37:16,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506706050] [2020-10-28 10:37:16,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:37:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:17,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:17,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:17,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:22,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:22,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1097 [2020-10-28 10:37:22,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:37:22,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-28 10:37:22,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:22,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:22,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:37:22,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 194 [2020-10-28 10:37:22,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 10:37:22,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:23,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:37:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:23,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:23,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:23,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:37:23,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:23,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:37:23,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:23,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:37:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:37:23,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:23,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:37:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:23,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:23,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:23,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:37:23,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:23,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:37:23,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:23,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:23,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:37:23,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:23,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:37:23,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:23,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:37:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:23,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:23,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:23,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 10:37:23,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:23,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:37:23,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:23,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:23,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:37:23,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:23,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:37:23,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:23,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 10:37:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:23,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:23,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:23,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 10:37:23,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:23,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 10:37:23,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:23,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:23,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:37:23,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:23,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 10:37:23,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:37:23,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-28 10:37:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:23,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:23,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:23,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 10:37:23,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:23,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 10:37:23,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:23,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:37:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:37:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 10:37:23,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 10:37:24,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506706050] [2020-10-28 10:37:24,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:37:24,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:37:24,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159096285] [2020-10-28 10:37:24,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:37:24,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:37:24,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:37:24,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:37:24,392 INFO L87 Difference]: Start difference. First operand 26362 states and 33930 transitions. Second operand 7 states. [2020-10-28 10:37:24,674 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:37:24,916 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:37:47,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:37:47,314 INFO L93 Difference]: Finished difference Result 94200 states and 127935 transitions. [2020-10-28 10:37:47,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:37:47,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1073 [2020-10-28 10:37:47,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:37:47,545 INFO L225 Difference]: With dead ends: 94200 [2020-10-28 10:37:47,546 INFO L226 Difference]: Without dead ends: 66998 [2020-10-28 10:37:47,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:37:47,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66998 states. [2020-10-28 10:37:48,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66998 to 56858. [2020-10-28 10:37:48,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56858 states. [2020-10-28 10:37:49,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56858 states to 56858 states and 70737 transitions. [2020-10-28 10:37:49,027 INFO L78 Accepts]: Start accepts. Automaton has 56858 states and 70737 transitions. Word has length 1073 [2020-10-28 10:37:49,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:37:49,027 INFO L481 AbstractCegarLoop]: Abstraction has 56858 states and 70737 transitions. [2020-10-28 10:37:49,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:37:49,028 INFO L276 IsEmpty]: Start isEmpty. Operand 56858 states and 70737 transitions. [2020-10-28 10:37:49,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1076 [2020-10-28 10:37:49,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:37:49,131 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:37:49,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 10:37:49,131 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:37:49,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:37:49,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1114057040, now seen corresponding path program 1 times [2020-10-28 10:37:49,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:37:49,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125768189] [2020-10-28 10:37:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:37:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:50,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:50,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:54,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:54,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1095 [2020-10-28 10:37:54,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:37:54,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-28 10:37:54,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:54,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 10:37:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:37:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 261 [2020-10-28 10:37:54,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:55,098 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:37:55,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:37:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:55,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:55,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:55,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:37:55,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:55,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:37:55,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:55,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:37:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:37:55,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:55,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:37:55,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:55,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:55,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:55,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-28 10:37:55,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:55,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-28 10:37:55,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:55,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:55,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:37:55,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:37:55,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 259 [2020-10-28 10:37:55,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:55,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 10:37:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:55,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:55,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:55,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 10:37:55,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:55,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 10:37:55,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:55,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:55,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 10:37:55,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:37:55,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 10:37:55,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:56,826 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:37:56,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125768189] [2020-10-28 10:37:56,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:37:56,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 10:37:56,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563689437] [2020-10-28 10:37:56,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:37:56,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:37:56,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:37:56,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:37:56,830 INFO L87 Difference]: Start difference. First operand 56858 states and 70737 transitions. Second operand 8 states. [2020-10-28 10:37:56,966 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:38:08,309 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:38:12,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:38:12,738 INFO L93 Difference]: Finished difference Result 121975 states and 151908 transitions. [2020-10-28 10:38:12,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:38:12,739 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1075 [2020-10-28 10:38:12,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:38:12,975 INFO L225 Difference]: With dead ends: 121975 [2020-10-28 10:38:12,976 INFO L226 Difference]: Without dead ends: 65127 [2020-10-28 10:38:13,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:38:13,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65127 states. [2020-10-28 10:38:14,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65127 to 64203. [2020-10-28 10:38:14,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64203 states. [2020-10-28 10:38:14,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64203 states to 64203 states and 77998 transitions. [2020-10-28 10:38:14,662 INFO L78 Accepts]: Start accepts. Automaton has 64203 states and 77998 transitions. Word has length 1075 [2020-10-28 10:38:14,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:38:14,663 INFO L481 AbstractCegarLoop]: Abstraction has 64203 states and 77998 transitions. [2020-10-28 10:38:14,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:38:14,663 INFO L276 IsEmpty]: Start isEmpty. Operand 64203 states and 77998 transitions. [2020-10-28 10:38:14,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1245 [2020-10-28 10:38:14,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:38:14,744 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:38:14,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 10:38:14,745 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:38:14,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:38:14,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1337381657, now seen corresponding path program 1 times [2020-10-28 10:38:14,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:38:14,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738710009] [2020-10-28 10:38:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:38:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:38:15,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:38:15,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:38:16,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:38:19,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:38:20,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:38:20,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1268 [2020-10-28 10:38:20,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:38:20,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 10:38:20,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:38:20,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:38:20,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:38:20,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-28 10:38:20,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-28 10:38:20,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:38:20,663 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:38:20,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:38:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:38:20,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:38:20,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:38:20,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:38:20,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:38:20,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 10:38:20,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:38:20,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:38:20,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:38:20,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:38:20,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:38:20,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:38:20,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:38:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:38:20,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:38:20,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:38:20,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:38:20,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:38:20,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:38:20,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:38:20,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:38:20,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:38:20,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:38:20,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:38:20,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:38:20,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:38:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:38:20,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:38:20,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:38:20,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-28 10:38:20,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:38:20,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 10:38:20,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:38:20,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:38:20,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:38:20,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:38:20,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-28 10:38:20,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:38:20,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-28 10:38:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:38:21,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:38:21,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:38:21,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-28 10:38:21,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:38:21,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-28 10:38:21,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:38:21,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:38:21,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:38:21,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:38:21,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 259 [2020-10-28 10:38:21,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:38:21,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 10:38:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:38:21,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:38:21,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:38:21,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 10:38:21,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:38:21,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 10:38:21,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:38:21,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:38:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 10:38:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:38:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 10:38:21,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:38:22,427 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 581 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 10:38:22,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738710009] [2020-10-28 10:38:22,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:38:22,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:38:22,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033125973] [2020-10-28 10:38:22,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:38:22,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:38:22,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:38:22,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:38:22,430 INFO L87 Difference]: Start difference. First operand 64203 states and 77998 transitions. Second operand 8 states. [2020-10-28 10:38:22,581 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:38:22,842 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 93