/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=DEEPEST --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_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:19:49,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:19:49,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:19:49,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:19:49,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:19:49,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:19:49,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:19:49,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:19:49,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:19:49,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:19:49,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:19:49,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:19:49,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:19:49,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:19:49,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:19:49,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:19:49,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:19:49,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:19:49,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:19:49,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:19:49,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:19:49,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:19:49,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:19:49,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:19:49,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:19:49,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:19:49,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:19:49,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:19:49,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:19:49,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:19:49,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:19:49,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:19:49,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:19:49,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:19:49,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:19:49,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:19:49,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:19:49,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:19:49,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:19:49,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:19:49,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:19:49,415 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 16:19:49,443 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:19:49,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:19:49,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:19:49,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:19:49,446 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:19:49,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:19:49,447 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:19:49,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:19:49,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:19:49,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:19:49,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:19:49,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:19:49,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:19:49,452 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:19:49,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:19:49,453 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:19:49,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:19:49,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:19:49,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:19:49,457 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:19:49,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:19:49,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:19:49,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:19:49,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:19:49,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:19:49,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:19:49,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:19:49,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:19:49,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:19:49,459 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:19:49,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:19:49,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:19:49,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:19:49,898 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:19:49,898 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:19:49,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label50.c [2020-10-27 16:19:49,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0986d63d/0a4b85af88b14348874211cb85bef24b/FLAG8ae0da3a1 [2020-10-27 16:19:51,453 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:19:51,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label50.c [2020-10-27 16:19:51,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0986d63d/0a4b85af88b14348874211cb85bef24b/FLAG8ae0da3a1 [2020-10-27 16:19:51,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0986d63d/0a4b85af88b14348874211cb85bef24b [2020-10-27 16:19:51,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:19:51,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:19:51,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:19:51,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:19:51,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:19:51,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:19:51" (1/1) ... [2020-10-27 16:19:51,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7210412e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:51, skipping insertion in model container [2020-10-27 16:19:51,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:19:51" (1/1) ... [2020-10-27 16:19:51,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:19:51,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:19:54,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:19:54,114 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:19:55,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:19:55,362 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:19:55,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:55 WrapperNode [2020-10-27 16:19:55,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:19:55,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:19:55,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:19:55,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:19:55,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:55" (1/1) ... [2020-10-27 16:19:55,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:55" (1/1) ... [2020-10-27 16:19:55,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:55" (1/1) ... [2020-10-27 16:19:55,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:55" (1/1) ... [2020-10-27 16:19:55,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:55" (1/1) ... [2020-10-27 16:19:55,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:55" (1/1) ... [2020-10-27 16:19:55,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:55" (1/1) ... [2020-10-27 16:19:55,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:19:55,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:19:55,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:19:55,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:19:55,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:19:56,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:19:56,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:19:56,041 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:19:56,041 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:19:56,041 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:19:56,041 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:19:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:19:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:19:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-27 16:19:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-27 16:19:56,043 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-27 16:19:56,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:19:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:19:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:19:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:19:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:19:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:19:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-27 16:19:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-27 16:19:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-27 16:19:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:19:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:19:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:19:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:19:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:19:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:19:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:19:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:19:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:19:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:19:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:19:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:19:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:20:06,140 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:20:06,143 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:20:06,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:20:06 BoogieIcfgContainer [2020-10-27 16:20:06,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:20:06,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:20:06,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:20:06,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:20:06,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:19:51" (1/3) ... [2020-10-27 16:20:06,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264a6fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:20:06, skipping insertion in model container [2020-10-27 16:20:06,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:55" (2/3) ... [2020-10-27 16:20:06,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264a6fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:20:06, skipping insertion in model container [2020-10-27 16:20:06,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:20:06" (3/3) ... [2020-10-27 16:20:06,156 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label50.c [2020-10-27 16:20:06,168 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:20:06,174 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:20:06,188 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:20:06,227 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:20:06,227 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:20:06,227 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:20:06,227 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:20:06,227 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:20:06,227 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:20:06,228 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:20:06,228 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:20:06,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-27 16:20:06,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1704 [2020-10-27 16:20:06,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:20:06,440 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] [2020-10-27 16:20:06,440 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:20:06,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:20:06,448 INFO L82 PathProgramCache]: Analyzing trace with hash 896557841, now seen corresponding path program 1 times [2020-10-27 16:20:06,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:20:06,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683992405] [2020-10-27 16:20:06,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:20:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:20:08,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:12,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:20:12,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1727 [2020-10-27 16:20:12,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:20:12,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5224 [2020-10-27 16:20:12,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:20:12,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:20:12,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:20:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1718 [2020-10-27 16:20:12,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 16:20:14,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:20:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:20:14,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:14,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:20:14,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:20:14,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:20:14,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 16:20:14,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:20:14,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:20:14,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:20:14,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:20:14,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:20:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:20:17,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683992405] [2020-10-27 16:20:17,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:20:17,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 16:20:17,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974363667] [2020-10-27 16:20:18,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:20:18,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:20:18,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:20:18,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:20:18,025 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 5 states. [2020-10-27 16:20:50,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:20:50,517 INFO L93 Difference]: Finished difference Result 8116 states and 15421 transitions. [2020-10-27 16:20:50,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:20:50,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1703 [2020-10-27 16:20:50,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:20:50,593 INFO L225 Difference]: With dead ends: 8116 [2020-10-27 16:20:50,593 INFO L226 Difference]: Without dead ends: 5822 [2020-10-27 16:20:50,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:20:50,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5822 states. [2020-10-27 16:20:50,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5822 to 5770. [2020-10-27 16:20:50,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5770 states. [2020-10-27 16:20:50,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5770 states to 5770 states and 10073 transitions. [2020-10-27 16:20:50,957 INFO L78 Accepts]: Start accepts. Automaton has 5770 states and 10073 transitions. Word has length 1703 [2020-10-27 16:20:50,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:20:50,965 INFO L481 AbstractCegarLoop]: Abstraction has 5770 states and 10073 transitions. [2020-10-27 16:20:50,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:20:50,965 INFO L276 IsEmpty]: Start isEmpty. Operand 5770 states and 10073 transitions. [2020-10-27 16:20:51,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1713 [2020-10-27 16:20:51,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:20:51,095 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] [2020-10-27 16:20:51,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:20:51,096 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:20:51,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:20:51,098 INFO L82 PathProgramCache]: Analyzing trace with hash 2088839573, now seen corresponding path program 1 times [2020-10-27 16:20:51,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:20:51,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792980918] [2020-10-27 16:20:51,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:20:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:20:51,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:53,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:56,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:20:56,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1738 [2020-10-27 16:20:56,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:20:56,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 16:20:56,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:20:56,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 16:20:56,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 16:20:56,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1715 [2020-10-27 16:20:56,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:20:58,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:20:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:20:58,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:58,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:20:58,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:20:58,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:20:58,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 16:20:58,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:20:58,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:20:58,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:20:58,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:20:58,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 16:20:58,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:20:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:20:58,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:58,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:20:58,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:20:58,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:20:58,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 16:20:58,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:20:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:20:58,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:20:58,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 16:20:58,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:21:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:21:01,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792980918] [2020-10-27 16:21:01,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:21:01,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:21:01,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656052319] [2020-10-27 16:21:01,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:21:01,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:21:01,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:21:01,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:21:01,507 INFO L87 Difference]: Start difference. First operand 5770 states and 10073 transitions. Second operand 6 states. [2020-10-27 16:21:41,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:21:41,693 INFO L93 Difference]: Finished difference Result 22157 states and 39678 transitions. [2020-10-27 16:21:41,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:21:41,694 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1712 [2020-10-27 16:21:41,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:21:41,795 INFO L225 Difference]: With dead ends: 22157 [2020-10-27 16:21:41,795 INFO L226 Difference]: Without dead ends: 16393 [2020-10-27 16:21:41,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:21:41,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16393 states. [2020-10-27 16:21:42,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16393 to 16375. [2020-10-27 16:21:42,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16375 states. [2020-10-27 16:21:42,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16375 states to 16375 states and 25303 transitions. [2020-10-27 16:21:42,464 INFO L78 Accepts]: Start accepts. Automaton has 16375 states and 25303 transitions. Word has length 1712 [2020-10-27 16:21:42,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:21:42,468 INFO L481 AbstractCegarLoop]: Abstraction has 16375 states and 25303 transitions. [2020-10-27 16:21:42,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:21:42,468 INFO L276 IsEmpty]: Start isEmpty. Operand 16375 states and 25303 transitions. [2020-10-27 16:21:42,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1731 [2020-10-27 16:21:42,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:21:42,573 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:21:42,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:21:42,574 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:21:42,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:21:42,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1626122080, now seen corresponding path program 1 times [2020-10-27 16:21:42,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:21:42,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653400471] [2020-10-27 16:21:42,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:21:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:21:42,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:43,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:47,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:21:47,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1756 [2020-10-27 16:21:47,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:21:47,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-27 16:21:47,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:21:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 16:21:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 16:21:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1244 [2020-10-27 16:21:47,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:21:55,220 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-27 16:21:55,471 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-10-27 16:21:55,714 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-10-27 16:21:55,970 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2020-10-27 16:21:56,213 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2020-10-27 16:21:56,466 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2020-10-27 16:21:56,721 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2020-10-27 16:21:56,995 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2020-10-27 16:21:57,304 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 49 [2020-10-27 16:21:57,670 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 49 [2020-10-27 16:21:58,083 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 49 [2020-10-27 16:21:58,482 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 44 [2020-10-27 16:21:58,850 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 40 [2020-10-27 16:21:59,122 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 34 [2020-10-27 16:21:59,495 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-10-27 16:21:59,692 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2020-10-27 16:21:59,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:21:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:21:59,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:59,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:21:59,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:21:59,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:21:59,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:21:59,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:21:59,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:21:59,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:21:59,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:21:59,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:21:59,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:21:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:21:59,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:59,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:21:59,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 16:21:59,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:21:59,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 16:21:59,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:21:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:21:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:21:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 16:21:59,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:22:29,588 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:22:29,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653400471] [2020-10-27 16:22:29,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:22:29,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 16:22:29,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954371561] [2020-10-27 16:22:29,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 16:22:29,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:22:29,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 16:22:29,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2020-10-27 16:22:29,593 INFO L87 Difference]: Start difference. First operand 16375 states and 25303 transitions. Second operand 23 states. [2020-10-27 16:22:30,507 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 16:22:30,843 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-27 16:22:32,843 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-27 16:22:40,755 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 16:22:41,106 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-27 16:22:51,143 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 16:22:51,489 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-27 16:23:01,041 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 16:23:01,351 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-27 16:23:03,636 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 123 [2020-10-27 16:23:04,379 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 119 [2020-10-27 16:23:05,679 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 116 [2020-10-27 16:23:06,756 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 114 [2020-10-27 16:23:13,130 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-27 16:23:13,371 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-27 16:23:22,982 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 16:23:23,248 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 16:23:38,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:23:38,663 INFO L93 Difference]: Finished difference Result 34031 states and 53224 transitions. [2020-10-27 16:23:38,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 16:23:38,673 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1730 [2020-10-27 16:23:38,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:23:38,799 INFO L225 Difference]: With dead ends: 34031 [2020-10-27 16:23:38,799 INFO L226 Difference]: Without dead ends: 17662 [2020-10-27 16:23:38,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=219, Invalid=1341, Unknown=0, NotChecked=0, Total=1560