/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_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:33:52,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:33:52,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:33:52,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:33:52,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:33:52,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:33:52,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:33:52,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:33:52,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:33:52,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:33:52,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:33:52,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:33:52,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:33:52,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:33:52,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:33:52,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:33:52,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:33:52,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:33:52,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:33:52,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:33:52,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:33:52,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:33:52,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:33:52,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:33:52,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:33:52,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:33:52,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:33:52,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:33:52,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:33:52,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:33:52,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:33:52,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:33:52,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:33:52,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:33:52,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:33:52,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:33:52,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:33:52,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:33:52,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:33:52,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:33:52,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:33:52,351 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 10:33:52,411 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:33:52,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:33:52,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:33:52,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:33:52,417 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:33:52,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:33:52,418 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:33:52,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:33:52,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:33:52,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:33:52,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:33:52,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:33:52,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:33:52,420 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:33:52,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:33:52,420 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:33:52,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:33:52,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:33:52,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:33:52,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:33:52,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:33:52,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:33:52,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:33:52,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:33:52,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:33:52,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:33:52,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:33:52,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:33:52,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:33:52,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:33:52,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:33:52,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:33:52,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:33:52,931 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:33:52,932 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:33:52,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label43.c [2020-10-28 10:33:53,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef8e73c0d/8b4874a8ff73494a896d38bfd1eca2c7/FLAGc9671b8e0 [2020-10-28 10:33:54,054 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:33:54,055 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label43.c [2020-10-28 10:33:54,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef8e73c0d/8b4874a8ff73494a896d38bfd1eca2c7/FLAGc9671b8e0 [2020-10-28 10:33:54,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef8e73c0d/8b4874a8ff73494a896d38bfd1eca2c7 [2020-10-28 10:33:54,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:33:54,483 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:33:54,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:33:54,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:33:54,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:33:54,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:33:54" (1/1) ... [2020-10-28 10:33:54,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4364c4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:33:54, skipping insertion in model container [2020-10-28 10:33:54,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:33:54" (1/1) ... [2020-10-28 10:33:54,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:33:54,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:33:56,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:33:56,288 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:33:57,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:33:57,059 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:33:57,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:33:57 WrapperNode [2020-10-28 10:33:57,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:33:57,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:33:57,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:33:57,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:33:57,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:33:57" (1/1) ... [2020-10-28 10:33:57,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:33:57" (1/1) ... [2020-10-28 10:33:57,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:33:57" (1/1) ... [2020-10-28 10:33:57,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:33:57" (1/1) ... [2020-10-28 10:33:57,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:33:57" (1/1) ... [2020-10-28 10:33:57,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:33:57" (1/1) ... [2020-10-28 10:33:57,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:33:57" (1/1) ... [2020-10-28 10:33:57,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:33:57,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:33:57,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:33:57,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:33:57,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:33:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:33:57,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:33:57,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:33:57,492 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:33:57,492 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:33:57,493 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:33:57,493 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:33:57,493 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:33:57,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:33:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:33:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:33:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:33:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:33:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:33:57,496 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:33:57,496 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:33:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:33:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:33:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:33:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:33:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:33:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:33:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:33:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:33:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:33:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:34:02,519 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:34:02,520 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:34:02,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:34:02 BoogieIcfgContainer [2020-10-28 10:34:02,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:34:02,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:34:02,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:34:02,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:34:02,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:33:54" (1/3) ... [2020-10-28 10:34:02,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7369b4de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:34:02, skipping insertion in model container [2020-10-28 10:34:02,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:33:57" (2/3) ... [2020-10-28 10:34:02,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7369b4de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:34:02, skipping insertion in model container [2020-10-28 10:34:02,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:34:02" (3/3) ... [2020-10-28 10:34:02,533 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label43.c [2020-10-28 10:34:02,545 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:34:02,551 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:34:02,565 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:34:02,607 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:34:02,607 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:34:02,607 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:34:02,607 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:34:02,607 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:34:02,607 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:34:02,608 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:34:02,608 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:34:02,646 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-28 10:34:02,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2020-10-28 10:34:02,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:34:02,700 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] [2020-10-28 10:34:02,700 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:34:02,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:34:02,707 INFO L82 PathProgramCache]: Analyzing trace with hash -2077525512, now seen corresponding path program 1 times [2020-10-28 10:34:02,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:34:02,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013436145] [2020-10-28 10:34:02,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:34:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:03,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:08,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:08,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:08,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 827 [2020-10-28 10:34:08,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:34:08,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-28 10:34:08,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:08,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:08,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 10:34:08,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:34:08,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 818 [2020-10-28 10:34:08,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:34:09,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:34:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:09,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:09,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:09,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:34:09,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:09,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 10:34:09,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:09,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:09,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:34:09,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:34:09,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:34:09,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:34:10,436 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 10:34:10,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013436145] [2020-10-28 10:34:10,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:34:10,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 10:34:10,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192137040] [2020-10-28 10:34:10,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:34:10,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:34:10,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:34:10,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:34:10,465 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 5 states. [2020-10-28 10:34:27,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:34:27,643 INFO L93 Difference]: Finished difference Result 3526 states and 6832 transitions. [2020-10-28 10:34:27,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 10:34:27,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 811 [2020-10-28 10:34:27,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:34:27,715 INFO L225 Difference]: With dead ends: 3526 [2020-10-28 10:34:27,715 INFO L226 Difference]: Without dead ends: 2548 [2020-10-28 10:34:27,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:34:27,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2020-10-28 10:34:27,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2535. [2020-10-28 10:34:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2535 states. [2020-10-28 10:34:27,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 4140 transitions. [2020-10-28 10:34:27,967 INFO L78 Accepts]: Start accepts. Automaton has 2535 states and 4140 transitions. Word has length 811 [2020-10-28 10:34:27,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:34:27,972 INFO L481 AbstractCegarLoop]: Abstraction has 2535 states and 4140 transitions. [2020-10-28 10:34:27,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:34:27,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2535 states and 4140 transitions. [2020-10-28 10:34:28,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2020-10-28 10:34:28,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:34:28,010 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] [2020-10-28 10:34:28,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:34:28,011 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:34:28,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:34:28,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1107162847, now seen corresponding path program 1 times [2020-10-28 10:34:28,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:34:28,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344560141] [2020-10-28 10:34:28,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:34:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:28,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:29,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:31,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:33,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:33,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 844 [2020-10-28 10:34:33,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:34:33,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 10:34:33,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:33,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:34:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:34:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 10:34:33,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 10:34:33,547 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:34:33,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:34:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:33,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:33,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:33,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:34:33,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:33,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 10:34:33,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:33,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:34:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:34:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:34:33,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:33,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:34:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:33,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:33,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:33,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 10:34:33,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:33,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 10:34:33,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:33,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:33,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:34:33,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:34:33,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 10:34:33,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:34,174 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 10:34:34,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344560141] [2020-10-28 10:34:34,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:34:34,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 10:34:34,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739549336] [2020-10-28 10:34:34,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:34:34,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:34:34,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:34:34,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:34:34,179 INFO L87 Difference]: Start difference. First operand 2535 states and 4140 transitions. Second operand 8 states. [2020-10-28 10:34:34,321 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:34:42,792 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:34:49,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:34:49,036 INFO L93 Difference]: Finished difference Result 7724 states and 12801 transitions. [2020-10-28 10:34:49,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:34:49,037 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 826 [2020-10-28 10:34:49,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:34:49,074 INFO L225 Difference]: With dead ends: 7724 [2020-10-28 10:34:49,074 INFO L226 Difference]: Without dead ends: 5195 [2020-10-28 10:34:49,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:34:49,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5195 states. [2020-10-28 10:34:49,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5195 to 5151. [2020-10-28 10:34:49,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5151 states. [2020-10-28 10:34:49,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5151 states to 5151 states and 8091 transitions. [2020-10-28 10:34:49,333 INFO L78 Accepts]: Start accepts. Automaton has 5151 states and 8091 transitions. Word has length 826 [2020-10-28 10:34:49,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:34:49,333 INFO L481 AbstractCegarLoop]: Abstraction has 5151 states and 8091 transitions. [2020-10-28 10:34:49,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:34:49,334 INFO L276 IsEmpty]: Start isEmpty. Operand 5151 states and 8091 transitions. [2020-10-28 10:34:49,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 846 [2020-10-28 10:34:49,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:34:49,378 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 10:34:49,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:34:49,378 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:34:49,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:34:49,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1711248464, now seen corresponding path program 1 times [2020-10-28 10:34:49,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:34:49,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950438328] [2020-10-28 10:34:49,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:34:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:49,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:49,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:52,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:54,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:54,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 865 [2020-10-28 10:34:54,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:34:54,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-28 10:34:54,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:54,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:34:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 10:34:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 10:34:54,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:54,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:34:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:54,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:54,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:54,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:34:54,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:54,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:34:54,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:54,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:54,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:34:54,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:34:54,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:34:54,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:54,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:34:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:54,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:54,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:54,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:34:54,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:54,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:34:54,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:54,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:54,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:34:54,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:34:54,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:34:54,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:54,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:34:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:54,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:54,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:54,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 10:34:54,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:54,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 10:34:54,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:54,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:54,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:34:54,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:34:54,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 10:34:54,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:55,310 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:34:55,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950438328] [2020-10-28 10:34:55,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:34:55,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:34:55,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652145597] [2020-10-28 10:34:55,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:34:55,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:34:55,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:34:55,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:34:55,316 INFO L87 Difference]: Start difference. First operand 5151 states and 8091 transitions. Second operand 7 states. [2020-10-28 10:34:55,468 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:35:09,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:35:09,325 INFO L93 Difference]: Finished difference Result 15604 states and 25119 transitions. [2020-10-28 10:35:09,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:35:09,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 845 [2020-10-28 10:35:09,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:35:09,384 INFO L225 Difference]: With dead ends: 15604 [2020-10-28 10:35:09,384 INFO L226 Difference]: Without dead ends: 10459 [2020-10-28 10:35:09,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 10:35:09,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10459 states. [2020-10-28 10:35:09,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10459 to 10407. [2020-10-28 10:35:09,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10407 states. [2020-10-28 10:35:09,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10407 states to 10407 states and 14898 transitions. [2020-10-28 10:35:09,713 INFO L78 Accepts]: Start accepts. Automaton has 10407 states and 14898 transitions. Word has length 845 [2020-10-28 10:35:09,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:35:09,714 INFO L481 AbstractCegarLoop]: Abstraction has 10407 states and 14898 transitions. [2020-10-28 10:35:09,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:35:09,714 INFO L276 IsEmpty]: Start isEmpty. Operand 10407 states and 14898 transitions. [2020-10-28 10:35:09,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2020-10-28 10:35:09,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:35:09,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:35:09,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:35:09,751 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:35:09,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:35:09,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1436920548, now seen corresponding path program 1 times [2020-10-28 10:35:09,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:35:09,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450794943] [2020-10-28 10:35:09,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:35:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:09,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:10,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:12,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:14,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:15,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:15,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 923 [2020-10-28 10:35:15,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:35:15,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5189 [2020-10-28 10:35:15,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:15,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:15,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:35:15,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 10:35:15,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 10:35:15,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:35:15,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:35:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:15,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:15,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:15,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:35:15,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:15,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:35:15,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:15,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:35:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:35:15,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:35:15,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:35:15,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:35:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:15,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:15,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:15,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:35:15,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:15,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:35:15,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:15,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:15,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:35:15,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:35:15,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:35:15,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:35:15,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:35:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:15,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:15,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:15,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 10:35:15,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:15,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 10:35:15,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:15,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:15,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:35:15,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:35:15,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 10:35:15,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:35:16,159 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:35:16,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450794943] [2020-10-28 10:35:16,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:35:16,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:35:16,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419159074] [2020-10-28 10:35:16,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:35:16,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:35:16,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:35:16,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:35:16,163 INFO L87 Difference]: Start difference. First operand 10407 states and 14898 transitions. Second operand 7 states. [2020-10-28 10:35:16,376 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:35:20,411 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:35:32,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:35:32,508 INFO L93 Difference]: Finished difference Result 31419 states and 48044 transitions. [2020-10-28 10:35:32,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:35:32,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 903 [2020-10-28 10:35:32,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:35:32,624 INFO L225 Difference]: With dead ends: 31419 [2020-10-28 10:35:32,624 INFO L226 Difference]: Without dead ends: 21018 [2020-10-28 10:35:32,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:35:32,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21018 states. [2020-10-28 10:35:33,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21018 to 20856. [2020-10-28 10:35:33,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20856 states. [2020-10-28 10:35:33,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20856 states to 20856 states and 29520 transitions. [2020-10-28 10:35:33,356 INFO L78 Accepts]: Start accepts. Automaton has 20856 states and 29520 transitions. Word has length 903 [2020-10-28 10:35:33,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:35:33,357 INFO L481 AbstractCegarLoop]: Abstraction has 20856 states and 29520 transitions. [2020-10-28 10:35:33,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:35:33,357 INFO L276 IsEmpty]: Start isEmpty. Operand 20856 states and 29520 transitions. [2020-10-28 10:35:33,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2020-10-28 10:35:33,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:35:33,432 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] [2020-10-28 10:35:33,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:35:33,433 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:35:33,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:35:33,434 INFO L82 PathProgramCache]: Analyzing trace with hash 352041193, now seen corresponding path program 1 times [2020-10-28 10:35:33,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:35:33,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017755217] [2020-10-28 10:35:33,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:35:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:33,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:33,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:34,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:38,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:38,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 924 [2020-10-28 10:35:38,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:35:38,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-28 10:35:38,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:38,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:38,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:35:38,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 10:35:38,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 10:35:38,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:35:38,894 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:35:38,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:35:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:38,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:38,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:38,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:35:38,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:38,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:35:38,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:38,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:38,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:35:38,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:35:38,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:35:38,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:35:38,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:35:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:38,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:38,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:38,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:35:38,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:38,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 10:35:38,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:38,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:38,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:35:38,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:35:38,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:35:38,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:35:38,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:35:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:39,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:39,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:39,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 10:35:39,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:39,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-28 10:35:39,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:39,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:39,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:35:39,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:35:39,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 10:35:39,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:35:39,655 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 10:35:39,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017755217] [2020-10-28 10:35:39,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:35:39,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:35:39,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76192853] [2020-10-28 10:35:39,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:35:39,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:35:39,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:35:39,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:35:39,658 INFO L87 Difference]: Start difference. First operand 20856 states and 29520 transitions. Second operand 7 states. [2020-10-28 10:35:39,808 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:35:52,872 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 10:35:55,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:35:55,447 INFO L93 Difference]: Finished difference Result 62419 states and 92423 transitions. [2020-10-28 10:35:55,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:35:55,448 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 904 [2020-10-28 10:35:55,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:35:55,644 INFO L225 Difference]: With dead ends: 62419 [2020-10-28 10:35:55,644 INFO L226 Difference]: Without dead ends: 41569 [2020-10-28 10:35:55,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:35:55,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41569 states. [2020-10-28 10:35:56,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41569 to 41442. [2020-10-28 10:35:56,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41442 states. [2020-10-28 10:35:57,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41442 states to 41442 states and 58715 transitions. [2020-10-28 10:35:57,064 INFO L78 Accepts]: Start accepts. Automaton has 41442 states and 58715 transitions. Word has length 904 [2020-10-28 10:35:57,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:35:57,065 INFO L481 AbstractCegarLoop]: Abstraction has 41442 states and 58715 transitions. [2020-10-28 10:35:57,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:35:57,065 INFO L276 IsEmpty]: Start isEmpty. Operand 41442 states and 58715 transitions. [2020-10-28 10:35:57,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2020-10-28 10:35:57,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:35:57,184 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:35:57,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:35:57,184 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:35:57,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:35:57,185 INFO L82 PathProgramCache]: Analyzing trace with hash 586684167, now seen corresponding path program 1 times [2020-10-28 10:35:57,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:35:57,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266500518] [2020-10-28 10:35:57,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:35:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:57,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:58,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:01,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:02,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:02,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1024 [2020-10-28 10:36:02,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:36:02,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5185 [2020-10-28 10:36:02,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:02,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:02,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:36:02,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:36:02,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 10:36:02,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:02,885 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:36:02,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:36:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:02,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:02,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:02,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:36:02,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:02,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 10:36:02,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:02,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:02,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:36:02,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:36:02,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:36:02,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:02,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:36:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:03,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:03,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:03,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 10:36:03,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:03,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-28 10:36:03,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:03,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:03,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:36:03,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:36:03,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-28 10:36:03,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:03,908 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:36:03,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266500518] [2020-10-28 10:36:03,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:36:03,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:36:03,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840427516] [2020-10-28 10:36:03,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:36:03,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:36:03,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:36:03,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:36:03,911 INFO L87 Difference]: Start difference. First operand 41442 states and 58715 transitions. Second operand 7 states. [2020-10-28 10:36:04,051 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:36:13,988 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:36:18,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:36:18,654 INFO L93 Difference]: Finished difference Result 107538 states and 155722 transitions. [2020-10-28 10:36:18,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:36:18,655 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1006 [2020-10-28 10:36:18,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:36:18,962 INFO L225 Difference]: With dead ends: 107538 [2020-10-28 10:36:18,963 INFO L226 Difference]: Without dead ends: 66102 [2020-10-28 10:36:19,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 10:36:19,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66102 states. [2020-10-28 10:36:20,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66102 to 65980. [2020-10-28 10:36:20,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65980 states. [2020-10-28 10:36:21,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65980 states to 65980 states and 87904 transitions. [2020-10-28 10:36:21,087 INFO L78 Accepts]: Start accepts. Automaton has 65980 states and 87904 transitions. Word has length 1006 [2020-10-28 10:36:21,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:36:21,088 INFO L481 AbstractCegarLoop]: Abstraction has 65980 states and 87904 transitions. [2020-10-28 10:36:21,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:36:21,088 INFO L276 IsEmpty]: Start isEmpty. Operand 65980 states and 87904 transitions. [2020-10-28 10:36:21,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1039 [2020-10-28 10:36:21,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:36:21,386 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 10:36:21,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 10:36:21,386 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:36:21,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:36:21,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1454598239, now seen corresponding path program 1 times [2020-10-28 10:36:21,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:36:21,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822705861] [2020-10-28 10:36:21,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:36:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:21,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:21,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:21,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:22,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:23,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:24,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:26,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:26,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1064 [2020-10-28 10:36:26,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 10:36:26,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 10:36:26,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:26,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:26,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:36:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 10:36:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-28 10:36:26,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:26,805 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:36:26,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:36:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:26,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:26,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:26,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:36:26,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:26,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:36:26,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:26,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:26,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:36:26,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:36:26,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:36:26,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:26,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:36:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:26,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:26,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:26,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 10:36:26,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:26,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 10:36:26,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:26,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:36:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:36:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:36:26,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:26,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 10:36:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:26,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:26,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:26,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 10:36:26,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:26,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 10:36:26,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:26,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:36:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:36:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 10:36:26,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:26,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 10:36:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:26,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:27,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:27,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:27,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 10:36:27,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:36:27,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-28 10:36:27,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:27,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:27,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:36:27,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:36:27,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-28 10:36:27,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:27,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-28 10:36:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:27,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:27,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:27,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:36:27,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:27,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:36:27,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:27,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:27,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:36:27,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:36:27,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 10:36:27,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:27,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 10:36:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:27,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:27,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:27,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 10:36:27,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:27,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:36:27,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:27,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:36:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 10:36:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:36:27,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 294 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-28 10:36:27,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822705861] [2020-10-28 10:36:27,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:36:27,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:36:27,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190268116] [2020-10-28 10:36:27,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:36:27,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:36:27,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:36:27,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:36:27,847 INFO L87 Difference]: Start difference. First operand 65980 states and 87904 transitions. Second operand 8 states. [2020-10-28 10:36:28,061 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:36:28,381 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:36:30,219 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:36:53,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:36:53,290 INFO L93 Difference]: Finished difference Result 182540 states and 247600 transitions. [2020-10-28 10:36:53,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 10:36:53,291 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1038 [2020-10-28 10:36:53,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:36:53,772 INFO L225 Difference]: With dead ends: 182540 [2020-10-28 10:36:53,772 INFO L226 Difference]: Without dead ends: 116566 [2020-10-28 10:36:54,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 10:36:54,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116566 states. [2020-10-28 10:36:56,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116566 to 103926. [2020-10-28 10:36:56,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103926 states. [2020-10-28 10:36:57,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103926 states to 103926 states and 126712 transitions. [2020-10-28 10:36:57,234 INFO L78 Accepts]: Start accepts. Automaton has 103926 states and 126712 transitions. Word has length 1038 [2020-10-28 10:36:57,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:36:57,235 INFO L481 AbstractCegarLoop]: Abstraction has 103926 states and 126712 transitions. [2020-10-28 10:36:57,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:36:57,235 INFO L276 IsEmpty]: Start isEmpty. Operand 103926 states and 126712 transitions. [2020-10-28 10:36:57,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1146 [2020-10-28 10:36:57,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:36:57,337 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 10:36:57,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 10:36:57,337 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:36:57,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:36:57,338 INFO L82 PathProgramCache]: Analyzing trace with hash 663125300, now seen corresponding path program 1 times [2020-10-28 10:36:57,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:36:57,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184243516] [2020-10-28 10:36:57,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:36:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:57,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:58,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:01,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:02,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:02,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1165 [2020-10-28 10:37:02,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:37:02,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-28 10:37:02,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:02,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 10:37:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 343 [2020-10-28 10:37:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 818 [2020-10-28 10:37:02,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:03,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:37:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:03,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:03,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:03,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:37:03,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:03,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 10:37:03,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:03,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:03,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:37:03,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:03,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:37:03,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:03,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:37:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:03,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:03,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:03,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-28 10:37:03,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:03,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-28 10:37:03,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:03,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:03,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:37:03,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:03,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 328 [2020-10-28 10:37:03,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:03,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 10:37:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:03,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:03,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:03,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 10:37:03,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:03,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 10:37:03,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:03,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:03,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:37:03,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:03,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 10:37:03,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:37:04,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184243516] [2020-10-28 10:37:04,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:37:04,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:37:04,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846489272] [2020-10-28 10:37:04,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:37:04,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:37:04,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:37:04,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:37:04,609 INFO L87 Difference]: Start difference. First operand 103926 states and 126712 transitions. Second operand 5 states. [2020-10-28 10:37:04,796 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:37:18,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:37:18,483 INFO L93 Difference]: Finished difference Result 238044 states and 290879 transitions. [2020-10-28 10:37:18,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:37:18,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1145 [2020-10-28 10:37:18,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:37:19,445 INFO L225 Difference]: With dead ends: 238044 [2020-10-28 10:37:19,445 INFO L226 Difference]: Without dead ends: 134128 [2020-10-28 10:37:20,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:37:20,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134128 states. [2020-10-28 10:37:22,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134128 to 129066. [2020-10-28 10:37:22,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129066 states. [2020-10-28 10:37:22,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129066 states to 129066 states and 154243 transitions. [2020-10-28 10:37:22,892 INFO L78 Accepts]: Start accepts. Automaton has 129066 states and 154243 transitions. Word has length 1145 [2020-10-28 10:37:22,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:37:22,900 INFO L481 AbstractCegarLoop]: Abstraction has 129066 states and 154243 transitions. [2020-10-28 10:37:22,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:37:22,900 INFO L276 IsEmpty]: Start isEmpty. Operand 129066 states and 154243 transitions. [2020-10-28 10:37:23,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1382 [2020-10-28 10:37:23,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:37:23,038 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 10:37:23,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 10:37:23,038 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:37:23,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:37:23,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1314235062, now seen corresponding path program 1 times [2020-10-28 10:37:23,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:37:23,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146449311] [2020-10-28 10:37:23,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:37:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:23,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:23,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:23,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:24,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking...