/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:16:26,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:16:26,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:16:26,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:16:26,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:16:26,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:16:26,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:16:26,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:16:26,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:16:26,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:16:26,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:16:26,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:16:26,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:16:26,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:16:26,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:16:26,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:16:26,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:16:26,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:16:26,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:16:26,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:16:26,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:16:26,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:16:26,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:16:26,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:16:26,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:16:26,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:16:26,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:16:26,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:16:26,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:16:26,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:16:26,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:16:26,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:16:26,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:16:26,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:16:26,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:16:26,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:16:26,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:16:26,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:16:26,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:16:26,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:16:26,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:16:26,515 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 21:16:26,541 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:16:26,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:16:26,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:16:26,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:16:26,543 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:16:26,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:16:26,544 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:16:26,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:16:26,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:16:26,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:16:26,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:16:26,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:16:26,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:16:26,545 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:16:26,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:16:26,545 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:16:26,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:16:26,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:16:26,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:16:26,546 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:16:26,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:16:26,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:16:26,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:16:26,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:16:26,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:16:26,547 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:16:26,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:16:26,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:16:26,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:16:26,548 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:16:26,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:16:27,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:16:27,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:16:27,010 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:16:27,011 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:16:27,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label20.c [2020-10-26 21:16:27,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74a3f09f7/7ea98726b96a4b629cf80020bb8741af/FLAG2f8cc8069 [2020-10-26 21:16:28,401 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:16:28,401 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label20.c [2020-10-26 21:16:28,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74a3f09f7/7ea98726b96a4b629cf80020bb8741af/FLAG2f8cc8069 [2020-10-26 21:16:28,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74a3f09f7/7ea98726b96a4b629cf80020bb8741af [2020-10-26 21:16:28,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:16:28,605 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:16:28,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:16:28,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:16:28,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:16:28,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:16:28" (1/1) ... [2020-10-26 21:16:28,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7afc6b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:28, skipping insertion in model container [2020-10-26 21:16:28,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:16:28" (1/1) ... [2020-10-26 21:16:28,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:16:28,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:16:31,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:16:31,207 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:16:32,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:16:32,550 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:16:32,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:32 WrapperNode [2020-10-26 21:16:32,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:16:32,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:16:32,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:16:32,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:16:32,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:32" (1/1) ... [2020-10-26 21:16:32,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:32" (1/1) ... [2020-10-26 21:16:32,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:32" (1/1) ... [2020-10-26 21:16:32,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:32" (1/1) ... [2020-10-26 21:16:32,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:32" (1/1) ... [2020-10-26 21:16:33,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:32" (1/1) ... [2020-10-26 21:16:33,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:32" (1/1) ... [2020-10-26 21:16:33,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:16:33,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:16:33,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:16:33,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:16:33,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:16:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:16:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:16:33,364 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:16:33,364 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:16:33,364 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:16:33,365 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:16:33,365 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:16:33,365 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-26 21:16:33,365 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-26 21:16:33,365 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-26 21:16:33,366 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-26 21:16:33,366 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:16:33,367 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:16:33,367 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:16:33,367 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:16:33,368 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:16:33,368 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-26 21:16:33,368 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-26 21:16:33,368 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-26 21:16:33,369 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-26 21:16:33,369 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:16:33,369 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:16:33,369 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:16:33,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:16:33,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:16:33,370 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:16:33,370 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:16:33,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:16:33,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:16:33,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:16:33,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:16:33,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:16:33,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:16:43,686 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:16:43,689 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:16:43,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:16:43 BoogieIcfgContainer [2020-10-26 21:16:43,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:16:43,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:16:43,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:16:43,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:16:43,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:16:28" (1/3) ... [2020-10-26 21:16:43,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c10b071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:16:43, skipping insertion in model container [2020-10-26 21:16:43,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:32" (2/3) ... [2020-10-26 21:16:43,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c10b071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:16:43, skipping insertion in model container [2020-10-26 21:16:43,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:16:43" (3/3) ... [2020-10-26 21:16:43,705 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label20.c [2020-10-26 21:16:43,716 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:16:43,723 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:16:43,737 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:16:43,780 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:16:43,780 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:16:43,780 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:16:43,780 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:16:43,780 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:16:43,781 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:16:43,781 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:16:43,782 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:16:43,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-26 21:16:44,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1706 [2020-10-26 21:16:44,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:16:44,093 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:16:44,093 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:16:44,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:16:44,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1920977959, now seen corresponding path program 1 times [2020-10-26 21:16:44,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:16:44,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299500461] [2020-10-26 21:16:44,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:16:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:16:45,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:50,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:16:50,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1729 [2020-10-26 21:16:50,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:16:50,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5161 [2020-10-26 21:16:50,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:16:50,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 21:16:50,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:16:50,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1720 [2020-10-26 21:16:50,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 21:16:52,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:16:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:16:52,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:52,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:16:52,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:16:52,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:16:52,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 21:16:52,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:16:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:16:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:16:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:16:52,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:16:55,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:16:55,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299500461] [2020-10-26 21:16:55,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:16:55,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 21:16:55,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937274873] [2020-10-26 21:16:55,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 21:16:55,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:16:55,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 21:16:55,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:16:55,312 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 5 states. [2020-10-26 21:17:20,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:17:20,798 INFO L93 Difference]: Finished difference Result 6315 states and 11856 transitions. [2020-10-26 21:17:20,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:17:20,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1705 [2020-10-26 21:17:20,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:17:20,862 INFO L225 Difference]: With dead ends: 6315 [2020-10-26 21:17:20,862 INFO L226 Difference]: Without dead ends: 4025 [2020-10-26 21:17:20,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 21:17:20,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-26 21:17:21,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3998. [2020-10-26 21:17:21,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3998 states. [2020-10-26 21:17:21,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6428 transitions. [2020-10-26 21:17:21,115 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 6428 transitions. Word has length 1705 [2020-10-26 21:17:21,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:17:21,120 INFO L481 AbstractCegarLoop]: Abstraction has 3998 states and 6428 transitions. [2020-10-26 21:17:21,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 21:17:21,121 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 6428 transitions. [2020-10-26 21:17:21,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1715 [2020-10-26 21:17:21,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:17:21,267 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:17:21,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:17:21,268 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:17:21,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:17:21,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1400465757, now seen corresponding path program 1 times [2020-10-26 21:17:21,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:17:21,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103745248] [2020-10-26 21:17:21,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:17:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:17:21,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:17:23,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:17:26,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:17:26,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1740 [2020-10-26 21:17:26,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:17:26,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 21:17:26,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:17:26,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:17:26,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:17:26,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 21:17:26,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:17:27,569 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-26 21:17:27,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:17:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:17:27,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:17:27,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:17:27,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:17:27,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:17:27,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 21:17:27,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:17:27,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:17:27,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:17:27,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:17:27,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:17:27,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:17:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:17:27,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:17:27,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:17:27,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 21:17:27,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:17:27,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 21:17:27,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:17:27,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:17:27,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:17:27,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 21:17:27,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:17:29,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:17:29,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103745248] [2020-10-26 21:17:29,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:17:29,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:17:29,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144475905] [2020-10-26 21:17:29,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:17:29,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:17:29,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:17:29,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:17:29,351 INFO L87 Difference]: Start difference. First operand 3998 states and 6428 transitions. Second operand 7 states. [2020-10-26 21:18:03,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:18:03,455 INFO L93 Difference]: Finished difference Result 11930 states and 19289 transitions. [2020-10-26 21:18:03,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:18:03,457 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1714 [2020-10-26 21:18:03,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:18:03,506 INFO L225 Difference]: With dead ends: 11930 [2020-10-26 21:18:03,507 INFO L226 Difference]: Without dead ends: 7938 [2020-10-26 21:18:03,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:18:03,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7938 states. [2020-10-26 21:18:03,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7938 to 7745. [2020-10-26 21:18:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7745 states. [2020-10-26 21:18:03,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7745 states to 7745 states and 11188 transitions. [2020-10-26 21:18:03,754 INFO L78 Accepts]: Start accepts. Automaton has 7745 states and 11188 transitions. Word has length 1714 [2020-10-26 21:18:03,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:18:03,754 INFO L481 AbstractCegarLoop]: Abstraction has 7745 states and 11188 transitions. [2020-10-26 21:18:03,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:18:03,755 INFO L276 IsEmpty]: Start isEmpty. Operand 7745 states and 11188 transitions. [2020-10-26 21:18:03,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1717 [2020-10-26 21:18:03,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:18:03,802 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:18:03,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:18:03,802 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:18:03,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:18:03,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1530063391, now seen corresponding path program 1 times [2020-10-26 21:18:03,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:18:03,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228986847] [2020-10-26 21:18:03,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:18:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:18:04,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:04,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:09,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:18:09,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1742 [2020-10-26 21:18:09,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:18:09,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5143 [2020-10-26 21:18:09,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:18:09,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:18:09,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:18:09,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 21:18:09,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:18:09,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:18:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:18:09,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:09,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:18:09,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:18:09,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:18:09,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 21:18:09,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:18:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:18:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:18:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:18:09,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:18:09,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:18:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:18:09,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:09,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:18:09,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 21:18:09,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:18:09,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 21:18:09,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:18:09,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:18:09,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:18:09,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 21:18:09,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:18:11,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:18:11,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228986847] [2020-10-26 21:18:11,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:18:11,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:18:11,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874218972] [2020-10-26 21:18:11,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:18:11,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:18:11,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:18:11,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:18:11,464 INFO L87 Difference]: Start difference. First operand 7745 states and 11188 transitions. Second operand 7 states. [2020-10-26 21:18:44,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:18:44,220 INFO L93 Difference]: Finished difference Result 23341 states and 34377 transitions. [2020-10-26 21:18:44,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:18:44,221 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1716 [2020-10-26 21:18:44,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:18:44,298 INFO L225 Difference]: With dead ends: 23341 [2020-10-26 21:18:44,298 INFO L226 Difference]: Without dead ends: 15602 [2020-10-26 21:18:44,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:18:44,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15602 states. [2020-10-26 21:18:44,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15602 to 15280. [2020-10-26 21:18:44,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15280 states. [2020-10-26 21:18:44,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15280 states to 15280 states and 19812 transitions. [2020-10-26 21:18:44,852 INFO L78 Accepts]: Start accepts. Automaton has 15280 states and 19812 transitions. Word has length 1716 [2020-10-26 21:18:44,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:18:44,856 INFO L481 AbstractCegarLoop]: Abstraction has 15280 states and 19812 transitions. [2020-10-26 21:18:44,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:18:44,856 INFO L276 IsEmpty]: Start isEmpty. Operand 15280 states and 19812 transitions. [2020-10-26 21:18:44,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1728 [2020-10-26 21:18:44,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:18:44,932 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:18:44,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:18:44,933 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:18:44,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:18:44,935 INFO L82 PathProgramCache]: Analyzing trace with hash -678422920, now seen corresponding path program 1 times [2020-10-26 21:18:44,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:18:44,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827578976] [2020-10-26 21:18:44,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:18:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:18:45,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:46,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:46,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:50,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:18:50,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1753 [2020-10-26 21:18:50,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:18:50,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-26 21:18:50,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:18:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:18:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:18:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 21:18:50,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:18:50,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:18:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:18:50,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:50,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:18:50,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:18:50,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:18:50,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 21:18:50,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:18:50,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:18:50,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:18:50,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:18:50,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:18:50,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:18:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:18:50,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:50,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:18:50,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-26 21:18:50,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:18:50,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 21:18:50,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:18:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:18:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:18:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 21:18:50,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:18:52,523 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:18:52,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827578976] [2020-10-26 21:18:52,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:18:52,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:18:52,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410450381] [2020-10-26 21:18:52,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:18:52,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:18:52,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:18:52,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:18:52,527 INFO L87 Difference]: Start difference. First operand 15280 states and 19812 transitions. Second operand 7 states. [2020-10-26 21:19:21,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:19:21,896 INFO L93 Difference]: Finished difference Result 38450 states and 49622 transitions. [2020-10-26 21:19:21,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:19:21,898 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1727 [2020-10-26 21:19:21,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:19:22,005 INFO L225 Difference]: With dead ends: 38450 [2020-10-26 21:19:22,005 INFO L226 Difference]: Without dead ends: 23176 [2020-10-26 21:19:22,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:19:22,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23176 states. [2020-10-26 21:19:22,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23176 to 22831. [2020-10-26 21:19:22,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22831 states. [2020-10-26 21:19:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22831 states to 22831 states and 28188 transitions. [2020-10-26 21:19:22,664 INFO L78 Accepts]: Start accepts. Automaton has 22831 states and 28188 transitions. Word has length 1727 [2020-10-26 21:19:22,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:19:22,665 INFO L481 AbstractCegarLoop]: Abstraction has 22831 states and 28188 transitions. [2020-10-26 21:19:22,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:19:22,665 INFO L276 IsEmpty]: Start isEmpty. Operand 22831 states and 28188 transitions. [2020-10-26 21:19:22,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1841 [2020-10-26 21:19:22,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:19:22,770 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:19:22,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:19:22,770 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:19:22,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:19:22,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1110755826, now seen corresponding path program 1 times [2020-10-26 21:19:22,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:19:22,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891611987] [2020-10-26 21:19:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:19:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:19:23,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:24,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:24,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:28,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:19:28,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1868 [2020-10-26 21:19:28,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:19:28,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-26 21:19:28,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:19:28,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:19:28,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-26 21:19:28,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-26 21:19:28,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:19:29,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:19:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:19:29,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:29,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:19:29,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:19:29,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:19:29,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 21:19:29,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:19:29,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:19:29,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:19:29,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:19:29,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:19:29,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:19:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:19:29,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:29,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:19:29,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 21:19:29,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:19:29,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 21:19:29,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:19:29,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:19:29,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:19:29,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 21:19:29,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:19:29,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-26 21:19:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:19:29,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:29,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:19:29,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-26 21:19:29,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:19:29,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 21:19:29,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:19:29,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:19:29,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:19:29,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 21:19:29,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:19:31,242 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 21:19:31,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891611987] [2020-10-26 21:19:31,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:19:31,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:19:31,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435035961] [2020-10-26 21:19:31,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:19:31,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:19:31,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:19:31,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:19:31,246 INFO L87 Difference]: Start difference. First operand 22831 states and 28188 transitions. Second operand 8 states.