/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_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:39:08,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:39:08,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:39:08,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:39:08,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:39:08,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:39:08,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:39:08,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:39:08,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:39:08,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:39:08,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:39:08,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:39:08,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:39:08,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:39:08,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:39:08,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:39:08,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:39:08,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:39:08,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:39:08,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:39:08,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:39:08,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:39:08,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:39:08,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:39:08,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:39:08,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:39:08,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:39:08,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:39:08,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:39:08,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:39:08,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:39:08,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:39:08,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:39:08,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:39:08,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:39:08,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:39:08,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:39:08,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:39:08,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:39:08,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:39:08,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:39:08,400 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 21:39:08,429 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:39:08,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:39:08,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:39:08,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:39:08,431 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:39:08,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:39:08,432 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:39:08,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:39:08,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:39:08,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:39:08,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:39:08,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:39:08,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:39:08,433 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:39:08,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:39:08,434 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:39:08,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:39:08,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:39:08,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:39:08,435 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:39:08,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:39:08,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:39:08,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:39:08,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:39:08,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:39:08,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:39:08,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:39:08,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:39:08,437 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:39:08,437 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:39:08,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:39:08,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:39:08,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:39:08,852 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:39:08,853 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:39:08,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label45.c [2020-10-26 21:39:08,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a56a5368/df0be22889de4cbda3c455abeebee391/FLAG8fcace291 [2020-10-26 21:39:10,240 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:39:10,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label45.c [2020-10-26 21:39:10,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a56a5368/df0be22889de4cbda3c455abeebee391/FLAG8fcace291 [2020-10-26 21:39:10,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a56a5368/df0be22889de4cbda3c455abeebee391 [2020-10-26 21:39:10,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:39:10,482 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:39:10,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:39:10,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:39:10,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:39:10,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:39:10" (1/1) ... [2020-10-26 21:39:10,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fbb9511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:39:10, skipping insertion in model container [2020-10-26 21:39:10,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:39:10" (1/1) ... [2020-10-26 21:39:10,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:39:10,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:39:12,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:39:12,903 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:39:13,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:39:14,016 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:39:14,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:39:14 WrapperNode [2020-10-26 21:39:14,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:39:14,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:39:14,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:39:14,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:39:14,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:39:14" (1/1) ... [2020-10-26 21:39:14,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:39:14" (1/1) ... [2020-10-26 21:39:14,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:39:14" (1/1) ... [2020-10-26 21:39:14,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:39:14" (1/1) ... [2020-10-26 21:39:14,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:39:14" (1/1) ... [2020-10-26 21:39:14,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:39:14" (1/1) ... [2020-10-26 21:39:14,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:39:14" (1/1) ... [2020-10-26 21:39:14,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:39:14,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:39:14,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:39:14,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:39:14,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:39:14" (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 21:39:14,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:39:14,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:39:14,797 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:39:14,797 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:39:14,797 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:39:14,797 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:39:14,797 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:39:14,798 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-26 21:39:14,798 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:39:14,798 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:39:14,798 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:39:14,798 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:39:14,798 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:39:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-26 21:39:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:39:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:39:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:39:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:39:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:39:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:39:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:39:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:39:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:39:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:39:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:39:14,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:39:14,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:39:22,987 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:39:22,988 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:39:22,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:39:22 BoogieIcfgContainer [2020-10-26 21:39:22,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:39:22,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:39:22,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:39:22,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:39:23,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:39:10" (1/3) ... [2020-10-26 21:39:23,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526c9d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:39:23, skipping insertion in model container [2020-10-26 21:39:23,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:39:14" (2/3) ... [2020-10-26 21:39:23,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526c9d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:39:23, skipping insertion in model container [2020-10-26 21:39:23,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:39:22" (3/3) ... [2020-10-26 21:39:23,004 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label45.c [2020-10-26 21:39:23,018 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:39:23,024 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:39:23,040 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:39:23,080 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:39:23,081 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:39:23,081 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:39:23,081 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:39:23,081 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:39:23,081 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:39:23,081 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:39:23,082 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:39:23,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-26 21:39:23,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 971 [2020-10-26 21:39:23,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:39:23,199 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:39:23,199 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:39:23,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:39:23,207 INFO L82 PathProgramCache]: Analyzing trace with hash -921781008, now seen corresponding path program 1 times [2020-10-26 21:39:23,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:39:23,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79621821] [2020-10-26 21:39:23,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:39:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:39:25,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:39:28,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:39:29,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:39:29,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 988 [2020-10-26 21:39:29,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:39:29,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-26 21:39:29,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:39:29,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-26 21:39:29,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:39:29,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-26 21:39:29,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 21:39:33,570 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-26 21:39:33,791 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-26 21:39:34,039 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-26 21:39:34,292 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-26 21:39:34,555 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-26 21:39:34,837 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-26 21:39:35,129 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-26 21:39:35,376 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-26 21:39:35,595 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-26 21:39:35,806 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-26 21:39:36,584 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 21:39:36,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:39:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:39:36,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:39:36,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:39:36,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:39:36,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:39:36,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 21:39:36,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:39:36,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:39:36,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:39:36,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:39:36,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:39:48,848 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 21:39:48,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79621821] [2020-10-26 21:39:48,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:39:48,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-26 21:39:48,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778528405] [2020-10-26 21:39:48,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 21:39:48,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:39:48,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 21:39:48,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-26 21:39:48,891 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 18 states. [2020-10-26 21:39:49,512 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-26 21:39:50,633 WARN L193 SmtUtils]: Spent 989.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 197 [2020-10-26 21:39:51,745 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 205 DAG size of output: 197 [2020-10-26 21:39:52,931 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 218 DAG size of output: 205 [2020-10-26 21:39:57,817 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 216 DAG size of output: 204 [2020-10-26 21:40:02,232 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 219 DAG size of output: 203 [2020-10-26 21:40:05,205 WARN L193 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2020-10-26 21:40:06,260 WARN L193 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 200 [2020-10-26 21:40:07,650 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 209 DAG size of output: 199 [2020-10-26 21:40:18,786 WARN L193 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-26 21:40:19,864 WARN L193 SmtUtils]: Spent 996.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 197 [2020-10-26 21:40:23,229 WARN L193 SmtUtils]: Spent 966.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 196 [2020-10-26 21:40:31,514 WARN L193 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 190 [2020-10-26 21:40:32,657 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 213 DAG size of output: 194 [2020-10-26 21:40:35,730 WARN L193 SmtUtils]: Spent 998.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 192 [2020-10-26 21:40:49,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:40:49,241 INFO L93 Difference]: Finished difference Result 3401 states and 6365 transitions. [2020-10-26 21:40:49,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 21:40:49,248 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 970 [2020-10-26 21:40:49,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:40:49,309 INFO L225 Difference]: With dead ends: 3401 [2020-10-26 21:40:49,309 INFO L226 Difference]: Without dead ends: 2020 [2020-10-26 21:40:49,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 21:40:49,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2020-10-26 21:40:49,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2020. [2020-10-26 21:40:49,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2020 states. [2020-10-26 21:40:49,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3054 transitions. [2020-10-26 21:40:49,549 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3054 transitions. Word has length 970 [2020-10-26 21:40:49,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:40:49,553 INFO L481 AbstractCegarLoop]: Abstraction has 2020 states and 3054 transitions. [2020-10-26 21:40:49,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-26 21:40:49,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3054 transitions. [2020-10-26 21:40:49,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1041 [2020-10-26 21:40:49,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:40:49,602 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:40:49,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:40:49,603 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:40:49,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:40:49,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1953130873, now seen corresponding path program 1 times [2020-10-26 21:40:49,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:40:49,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450671375] [2020-10-26 21:40:49,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:40:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:40:49,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:40:52,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:40:54,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:40:54,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1060 [2020-10-26 21:40:54,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:40:54,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-26 21:40:54,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:40:54,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:40:54,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:40:54,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 21:40:54,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:40:55,315 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 21:40:55,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:40:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:40:55,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:40:55,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:40:55,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:40:55,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:40:55,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 21:40:55,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:40:55,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:40:55,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:40:55,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:40:55,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:40:55,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:40:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:40:55,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:40:55,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:40:55,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 21:40:55,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:40:55,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-26 21:40:55,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:40:55,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:40:55,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:40:55,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 21:40:55,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:40:56,533 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 21:40:56,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450671375] [2020-10-26 21:40:56,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:40:56,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:40:56,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344300643] [2020-10-26 21:40:56,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:40:56,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:40:56,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:40:56,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:40:56,538 INFO L87 Difference]: Start difference. First operand 2020 states and 3054 transitions. Second operand 7 states. [2020-10-26 21:40:56,827 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-26 21:40:58,352 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-26 21:41:21,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:41:21,115 INFO L93 Difference]: Finished difference Result 4491 states and 7529 transitions. [2020-10-26 21:41:21,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:41:21,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1040 [2020-10-26 21:41:21,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:41:21,136 INFO L225 Difference]: With dead ends: 4491 [2020-10-26 21:41:21,136 INFO L226 Difference]: Without dead ends: 3231 [2020-10-26 21:41:21,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:41:21,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2020-10-26 21:41:21,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 3148. [2020-10-26 21:41:21,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3148 states. [2020-10-26 21:41:21,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 4655 transitions. [2020-10-26 21:41:21,245 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 4655 transitions. Word has length 1040 [2020-10-26 21:41:21,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:41:21,245 INFO L481 AbstractCegarLoop]: Abstraction has 3148 states and 4655 transitions. [2020-10-26 21:41:21,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:41:21,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 4655 transitions. [2020-10-26 21:41:21,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1093 [2020-10-26 21:41:21,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:41:21,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:41:21,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:41:21,303 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:41:21,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:41:21,304 INFO L82 PathProgramCache]: Analyzing trace with hash -293891652, now seen corresponding path program 1 times [2020-10-26 21:41:21,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:41:21,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128852208] [2020-10-26 21:41:21,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:41:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:41:22,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:41:22,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:41:26,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:41:26,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1112 [2020-10-26 21:41:26,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:41:26,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-10-26 21:41:26,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:41:26,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-26 21:41:26,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:41:26,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-26 21:41:26,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:41:29,181 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-10-26 21:41:29,439 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2020-10-26 21:41:29,660 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 80 [2020-10-26 21:41:29,908 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2020-10-26 21:41:30,117 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-10-26 21:41:30,304 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-10-26 21:41:30,617 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2020-10-26 21:41:30,801 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2020-10-26 21:41:30,965 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-10-26 21:41:31,371 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 21:41:31,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:41:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:41:31,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:41:31,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:41:31,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:41:31,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:41:31,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 21:41:31,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:41:31,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:41:31,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:41:31,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:41:31,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:41:31,587 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:41:31,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:41:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:41:31,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:41:32,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:41:32,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-26 21:41:32,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:41:32,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-26 21:41:32,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:41:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 21:41:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:41:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-26 21:41:32,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:41:42,382 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 21:41:42,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128852208] [2020-10-26 21:41:42,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:41:42,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-26 21:41:42,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9351419] [2020-10-26 21:41:42,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 21:41:42,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:41:42,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 21:41:42,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-26 21:41:42,386 INFO L87 Difference]: Start difference. First operand 3148 states and 4655 transitions. Second operand 18 states. [2020-10-26 21:41:42,830 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-26 21:41:45,214 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 83 [2020-10-26 21:41:45,539 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-10-26 21:41:45,989 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 91 [2020-10-26 21:41:47,085 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 221 DAG size of output: 209 [2020-10-26 21:41:48,295 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 241 DAG size of output: 229 [2020-10-26 21:41:50,170 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 238 DAG size of output: 226 [2020-10-26 21:41:54,277 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 240 DAG size of output: 223 [2020-10-26 21:42:04,404 WARN L193 SmtUtils]: Spent 951.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 201 [2020-10-26 21:42:05,613 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 227 DAG size of output: 215 [2020-10-26 21:42:07,454 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 224 DAG size of output: 212 [2020-10-26 21:42:18,132 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 225 DAG size of output: 209 [2020-10-26 21:42:20,291 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 225 DAG size of output: 205 [2020-10-26 21:42:47,440 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 179