/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/Problem06_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:42:58,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:42:58,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:42:58,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:42:58,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:42:58,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:42:58,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:42:58,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:42:58,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:42:58,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:42:58,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:42:58,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:42:58,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:42:58,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:42:58,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:42:58,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:42:58,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:42:58,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:42:58,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:42:58,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:42:58,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:42:58,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:42:58,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:42:58,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:42:58,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:42:58,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:42:58,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:42:58,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:42:58,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:42:58,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:42:58,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:42:58,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:42:58,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:42:58,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:42:58,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:42:58,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:42:58,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:42:58,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:42:58,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:42:58,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:42:58,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:42:58,366 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 21:42:58,394 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:42:58,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:42:58,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:42:58,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:42:58,397 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:42:58,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:42:58,397 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:42:58,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:42:58,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:42:58,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:42:58,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:42:58,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:42:58,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:42:58,399 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:42:58,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:42:58,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:42:58,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:42:58,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:42:58,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:42:58,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:42:58,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:42:58,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:42:58,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:42:58,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:42:58,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:42:58,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:42:58,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:42:58,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:42:58,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:42:58,403 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:42:58,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:42:58,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:42:58,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:42:58,840 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:42:58,841 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:42:58,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label59.c [2020-10-26 21:42:58,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aeee87289/5f35e000befa43b08902089f397e853a/FLAGdebabe75d [2020-10-26 21:43:00,342 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:43:00,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label59.c [2020-10-26 21:43:00,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aeee87289/5f35e000befa43b08902089f397e853a/FLAGdebabe75d [2020-10-26 21:43:00,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aeee87289/5f35e000befa43b08902089f397e853a [2020-10-26 21:43:00,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:43:00,453 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:43:00,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:43:00,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:43:00,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:43:00,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:43:00" (1/1) ... [2020-10-26 21:43:00,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c76db6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:43:00, skipping insertion in model container [2020-10-26 21:43:00,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:43:00" (1/1) ... [2020-10-26 21:43:00,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:43:00,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:43:03,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:43:03,067 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:43:04,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:43:04,300 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:43:04,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:43:04 WrapperNode [2020-10-26 21:43:04,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:43:04,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:43:04,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:43:04,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:43:04,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:43:04" (1/1) ... [2020-10-26 21:43:04,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:43:04" (1/1) ... [2020-10-26 21:43:04,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:43:04" (1/1) ... [2020-10-26 21:43:04,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:43:04" (1/1) ... [2020-10-26 21:43:04,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:43:04" (1/1) ... [2020-10-26 21:43:04,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:43:04" (1/1) ... [2020-10-26 21:43:04,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:43:04" (1/1) ... [2020-10-26 21:43:04,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:43:04,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:43:04,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:43:04,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:43:04,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:43:04" (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 21:43:04,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:43:04,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:43:04,949 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:43:04,949 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:43:04,949 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:43:04,949 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:43:04,950 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:43:04,950 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-26 21:43:04,950 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:43:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:43:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:43:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:43:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:43:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-26 21:43:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:43:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:43:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:43:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:43:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:43:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:43:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:43:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:43:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:43:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:43:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:43:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:43:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:43:12,659 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:43:12,660 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:43:12,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:43:12 BoogieIcfgContainer [2020-10-26 21:43:12,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:43:12,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:43:12,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:43:12,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:43:12,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:43:00" (1/3) ... [2020-10-26 21:43:12,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788e626c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:43:12, skipping insertion in model container [2020-10-26 21:43:12,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:43:04" (2/3) ... [2020-10-26 21:43:12,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788e626c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:43:12, skipping insertion in model container [2020-10-26 21:43:12,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:43:12" (3/3) ... [2020-10-26 21:43:12,680 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label59.c [2020-10-26 21:43:12,694 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:43:12,700 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:43:12,714 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:43:12,760 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:43:12,761 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:43:12,761 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:43:12,761 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:43:12,761 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:43:12,761 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:43:12,761 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:43:12,761 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:43:12,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-26 21:43:12,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2020-10-26 21:43:12,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:43:12,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:43:12,890 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:43:12,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:43:12,902 INFO L82 PathProgramCache]: Analyzing trace with hash -786993316, now seen corresponding path program 1 times [2020-10-26 21:43:12,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:43:12,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950428970] [2020-10-26 21:43:12,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:43:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:43:14,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:43:17,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:43:19,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:43:19,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 975 [2020-10-26 21:43:19,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:43:19,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5108 [2020-10-26 21:43:19,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:43:19,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-26 21:43:19,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:43:19,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-26 21:43:19,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-26 21:43:23,712 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-26 21:43:23,946 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-26 21:43:24,200 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2020-10-26 21:43:24,479 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2020-10-26 21:43:24,805 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2020-10-26 21:43:25,113 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2020-10-26 21:43:25,453 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2020-10-26 21:43:25,732 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-26 21:43:25,944 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-26 21:43:26,165 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-26 21:43:26,363 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-26 21:43:26,529 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-26 21:43:26,856 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2020-10-26 21:43:27,223 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 65 [2020-10-26 21:43:27,639 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 62 [2020-10-26 21:43:27,930 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 21:43:27,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:43:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:43:27,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:43:27,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:43:27,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:43:27,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:43:27,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 21:43:27,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:43:27,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:43:27,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:43:27,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:43:27,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:43:41,572 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 21:43:41,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950428970] [2020-10-26 21:43:41,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:43:41,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-26 21:43:41,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37190710] [2020-10-26 21:43:41,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 21:43:41,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:43:41,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 21:43:41,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-26 21:43:41,597 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 18 states. [2020-10-26 21:43:42,194 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-26 21:43:43,249 WARN L193 SmtUtils]: Spent 910.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 199 [2020-10-26 21:43:44,218 WARN L193 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 198 [2020-10-26 21:43:45,235 WARN L193 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 202 [2020-10-26 21:43:50,542 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 244 DAG size of output: 202 [2020-10-26 21:43:54,862 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 249 DAG size of output: 212 [2020-10-26 21:43:58,038 WARN L193 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 192 [2020-10-26 21:43:59,173 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 227 DAG size of output: 204 [2020-10-26 21:44:00,592 WARN L193 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 203 [2020-10-26 21:44:12,448 WARN L193 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 196 [2020-10-26 21:44:13,513 WARN L193 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 206 [2020-10-26 21:44:17,232 WARN L193 SmtUtils]: Spent 967.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 204 [2020-10-26 21:44:26,488 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 222 DAG size of output: 197 [2020-10-26 21:44:27,759 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 231 DAG size of output: 206 [2020-10-26 21:44:31,224 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 233 DAG size of output: 202 [2020-10-26 21:44:46,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:44:46,678 INFO L93 Difference]: Finished difference Result 3401 states and 6365 transitions. [2020-10-26 21:44:46,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 21:44:46,682 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 957 [2020-10-26 21:44:46,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:44:46,732 INFO L225 Difference]: With dead ends: 3401 [2020-10-26 21:44:46,733 INFO L226 Difference]: Without dead ends: 2020 [2020-10-26 21:44:46,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 21:44:46,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2020-10-26 21:44:46,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2020. [2020-10-26 21:44:46,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2020 states. [2020-10-26 21:44:46,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3054 transitions. [2020-10-26 21:44:46,945 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3054 transitions. Word has length 957 [2020-10-26 21:44:46,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:44:46,950 INFO L481 AbstractCegarLoop]: Abstraction has 2020 states and 3054 transitions. [2020-10-26 21:44:46,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-26 21:44:46,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3054 transitions. [2020-10-26 21:44:47,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2020-10-26 21:44:47,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:44:47,004 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:47,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:44:47,005 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:44:47,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:44:47,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1947133901, now seen corresponding path program 1 times [2020-10-26 21:44:47,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:44:47,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628272424] [2020-10-26 21:44:47,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:44:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:44:47,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:44:49,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:44:52,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:44:52,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1047 [2020-10-26 21:44:52,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:44:52,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5153 [2020-10-26 21:44:52,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:44:52,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:44:52,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:44:52,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 21:44:52,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:44:52,945 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 21:44:52,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:44:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:44:52,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:44:52,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:44:52,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:44:52,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:44:52,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 21:44:52,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:44:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:44:52,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:44:52,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:44:52,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:44:53,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:44:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:44:53,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:44:53,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:44:53,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 21:44:53,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:44:53,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-26 21:44:53,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:44:53,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:44:53,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:44:53,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 21:44:53,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:44:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:44:54,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628272424] [2020-10-26 21:44:54,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:44:54,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:44:54,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263284177] [2020-10-26 21:44:54,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:44:54,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:44:54,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:44:54,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:44:54,595 INFO L87 Difference]: Start difference. First operand 2020 states and 3054 transitions. Second operand 7 states. [2020-10-26 21:44:54,878 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-26 21:44:56,290 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-26 21:45:20,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:45:20,616 INFO L93 Difference]: Finished difference Result 4476 states and 7509 transitions. [2020-10-26 21:45:20,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:45:20,617 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1027 [2020-10-26 21:45:20,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:45:20,639 INFO L225 Difference]: With dead ends: 4476 [2020-10-26 21:45:20,639 INFO L226 Difference]: Without dead ends: 3216 [2020-10-26 21:45:20,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:45:20,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3216 states. [2020-10-26 21:45:20,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3216 to 3141. [2020-10-26 21:45:20,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3141 states. [2020-10-26 21:45:20,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 4648 transitions. [2020-10-26 21:45:20,748 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 4648 transitions. Word has length 1027 [2020-10-26 21:45:20,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:45:20,749 INFO L481 AbstractCegarLoop]: Abstraction has 3141 states and 4648 transitions. [2020-10-26 21:45:20,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:45:20,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 4648 transitions. [2020-10-26 21:45:20,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1080 [2020-10-26 21:45:20,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:45:20,768 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:20,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:45:20,769 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:45:20,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:45:20,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1005895440, now seen corresponding path program 1 times [2020-10-26 21:45:20,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:45:20,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939586758] [2020-10-26 21:45:20,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:45:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:45:21,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:45:22,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:45:26,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:45:26,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1099 [2020-10-26 21:45:26,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:45:26,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5248 [2020-10-26 21:45:26,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:45:26,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-26 21:45:26,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:45:26,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-26 21:45:26,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:45:30,495 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-26 21:45:30,915 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 90 [2020-10-26 21:45:31,383 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 90 [2020-10-26 21:45:31,963 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 87 [2020-10-26 21:45:32,329 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 72 [2020-10-26 21:45:32,661 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2020-10-26 21:45:33,042 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2020-10-26 21:45:33,498 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 74 [2020-10-26 21:45:33,913 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 66 [2020-10-26 21:45:34,330 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 63 [2020-10-26 21:45:34,634 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 21:45:34,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:45:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:45:34,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:45:34,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:45:34,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:45:34,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:45:34,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 21:45:34,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:45:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:45:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:45:34,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:45:34,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:45:34,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:45:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:45:34,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:45:35,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:45:35,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-26 21:45:35,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:45:35,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 673 [2020-10-26 21:45:35,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:45:35,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 21:45:35,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:45:35,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-26 21:45:35,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:45:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:45:47,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939586758] [2020-10-26 21:45:47,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:45:47,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-26 21:45:47,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772363618] [2020-10-26 21:45:47,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 21:45:47,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:45:47,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 21:45:47,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-26 21:45:47,488 INFO L87 Difference]: Start difference. First operand 3141 states and 4648 transitions. Second operand 18 states. [2020-10-26 21:45:47,988 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-26 21:45:51,337 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 89 [2020-10-26 21:45:51,706 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2020-10-26 21:45:52,197 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 93 [2020-10-26 21:45:53,609 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 238 DAG size of output: 212 [2020-10-26 21:45:55,118 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 258 DAG size of output: 232 [2020-10-26 21:45:57,931 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 261 DAG size of output: 229 [2020-10-26 21:46:02,414 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 264 DAG size of output: 226 [2020-10-26 21:46:08,271 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-26 21:46:15,536 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 225 DAG size of output: 204 [2020-10-26 21:46:16,949 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 239 DAG size of output: 218 [2020-10-26 21:46:19,299 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 237 DAG size of output: 215 [2020-10-26 21:46:33,976 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 238 DAG size of output: 212 [2020-10-26 21:46:35,877 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 242 DAG size of output: 207