/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem19_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:46:23,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:46:23,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:46:23,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:46:23,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:46:23,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:46:23,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:46:23,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:46:23,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:46:23,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:46:23,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:46:23,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:46:23,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:46:23,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:46:23,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:46:23,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:46:23,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:46:23,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:46:23,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:46:23,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:46:23,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:46:23,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:46:23,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:46:23,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:46:23,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:46:23,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:46:23,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:46:23,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:46:23,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:46:23,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:46:23,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:46:23,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:46:23,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:46:23,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:46:23,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:46:23,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:46:23,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:46:23,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:46:23,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:46:23,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:46:23,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:46:23,514 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 [2020-10-29 08:46:23,542 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:46:23,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:46:23,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:46:23,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:46:23,545 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:46:23,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:46:23,545 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:46:23,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:46:23,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:46:23,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:46:23,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:46:23,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:46:23,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:46:23,547 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:46:23,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:46:23,548 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:46:23,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:46:23,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:46:23,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:46:23,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:46:23,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:46:23,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:46:23,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:46:23,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:46:23,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:46:23,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:46:23,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:46:23,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:46:23,551 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:46:23,552 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:46:23,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:46:23,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:46:23,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:46:23,987 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:46:23,988 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:46:23,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label16.c [2020-10-29 08:46:24,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e329511f6/9ae38c4e4cc4469f9d818b52204e0987/FLAG09f24cb49 [2020-10-29 08:46:25,371 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:46:25,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label16.c [2020-10-29 08:46:25,469 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e329511f6/9ae38c4e4cc4469f9d818b52204e0987/FLAG09f24cb49 [2020-10-29 08:46:25,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e329511f6/9ae38c4e4cc4469f9d818b52204e0987 [2020-10-29 08:46:25,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:46:25,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:46:25,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:46:25,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:46:25,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:46:25,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:46:25" (1/1) ... [2020-10-29 08:46:25,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e2a1577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:46:25, skipping insertion in model container [2020-10-29 08:46:25,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:46:25" (1/1) ... [2020-10-29 08:46:25,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:46:25,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:46:28,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:46:28,128 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:46:29,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:46:29,182 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:46:29,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:46:29 WrapperNode [2020-10-29 08:46:29,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:46:29,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:46:29,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:46:29,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:46:29,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:46:29" (1/1) ... [2020-10-29 08:46:29,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:46:29" (1/1) ... [2020-10-29 08:46:29,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:46:29" (1/1) ... [2020-10-29 08:46:29,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:46:29" (1/1) ... [2020-10-29 08:46:29,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:46:29" (1/1) ... [2020-10-29 08:46:29,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:46:29" (1/1) ... [2020-10-29 08:46:29,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:46:29" (1/1) ... [2020-10-29 08:46:29,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:46:29,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:46:29,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:46:29,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:46:29,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:46:29" (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 [2020-10-29 08:46:29,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:46:29,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:46:29,932 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:46:29,932 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:46:29,932 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:46:29,932 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:46:29,933 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 08:46:29,933 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 08:46:29,933 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 08:46:29,933 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:46:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:46:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:46:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:46:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 08:46:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 08:46:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 08:46:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:46:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:46:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:46:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:46:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:46:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:46:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:46:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:46:29,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:46:29,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:46:29,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:46:29,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:46:29,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:46:45,630 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:46:45,635 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:46:45,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:46:45 BoogieIcfgContainer [2020-10-29 08:46:45,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:46:45,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:46:45,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:46:45,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:46:45,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:46:25" (1/3) ... [2020-10-29 08:46:45,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb3cecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:46:45, skipping insertion in model container [2020-10-29 08:46:45,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:46:29" (2/3) ... [2020-10-29 08:46:45,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb3cecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:46:45, skipping insertion in model container [2020-10-29 08:46:45,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:46:45" (3/3) ... [2020-10-29 08:46:45,655 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label16.c [2020-10-29 08:46:45,668 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:46:45,675 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:46:45,689 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:46:45,727 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:46:45,728 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:46:45,728 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:46:45,728 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:46:45,728 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:46:45,728 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:46:45,728 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:46:45,728 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:46:45,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-29 08:46:45,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 08:46:45,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:46:45,798 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] [2020-10-29 08:46:45,799 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:46:45,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:46:45,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1768892187, now seen corresponding path program 1 times [2020-10-29 08:46:45,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:46:45,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184249584] [2020-10-29 08:46:45,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:46:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:46:46,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:46:46,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:46:46,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:46:46,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:46:46,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 634 [2020-10-29 08:46:46,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:46:46,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:46:46,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:46:46,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:46:46,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 08:46:46,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:46:46,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:46:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:46:46,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:46:46,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:46:46,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:46:46,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:46:46,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:46:46,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:46:46,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:46:46,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:46:46,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:46:46,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:46:46,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:46:46,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:46:46,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184249584] [2020-10-29 08:46:47,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:46:47,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:46:47,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193034370] [2020-10-29 08:46:47,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:46:47,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:46:47,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:46:47,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:46:47,034 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 4 states. [2020-10-29 08:47:15,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:47:15,733 INFO L93 Difference]: Finished difference Result 5100 states and 9572 transitions. [2020-10-29 08:47:15,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:47:15,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-29 08:47:15,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:47:15,789 INFO L225 Difference]: With dead ends: 5100 [2020-10-29 08:47:15,789 INFO L226 Difference]: Without dead ends: 3255 [2020-10-29 08:47:15,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:47:15,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3255 states. [2020-10-29 08:47:16,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3255 to 3209. [2020-10-29 08:47:16,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3209 states. [2020-10-29 08:47:16,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3209 states to 3209 states and 5178 transitions. [2020-10-29 08:47:16,075 INFO L78 Accepts]: Start accepts. Automaton has 3209 states and 5178 transitions. Word has length 60 [2020-10-29 08:47:16,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:47:16,079 INFO L481 AbstractCegarLoop]: Abstraction has 3209 states and 5178 transitions. [2020-10-29 08:47:16,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:47:16,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3209 states and 5178 transitions. [2020-10-29 08:47:16,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-29 08:47:16,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:47:16,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:47:16,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:47:16,096 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:47:16,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:47:16,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1135987204, now seen corresponding path program 1 times [2020-10-29 08:47:16,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:47:16,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668294361] [2020-10-29 08:47:16,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:47:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:47:16,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:47:16,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:47:17,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:47:17,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:47:17,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-29 08:47:17,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:47:17,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1801 [2020-10-29 08:47:17,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:47:17,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:47:17,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:47:17,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:47:17,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 08:47:17,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:47:18,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:47:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:47:18,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:47:18,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:47:18,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:47:18,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:47:18,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 08:47:18,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:47:18,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:47:18,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:47:18,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:47:18,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:47:18,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:47:18,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:47:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:47:18,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:47:18,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:47:18,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:47:18,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:47:18,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:47:18,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-29 08:47:18,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:47:18,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:47:18,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:47:18,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:47:18,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 08:47:18,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:47:18,550 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 08:47:18,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668294361] [2020-10-29 08:47:18,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:47:18,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:47:18,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343841241] [2020-10-29 08:47:18,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:47:18,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:47:18,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:47:18,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:47:18,557 INFO L87 Difference]: Start difference. First operand 3209 states and 5178 transitions. Second operand 7 states. [2020-10-29 08:48:07,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:48:07,578 INFO L93 Difference]: Finished difference Result 12101 states and 19889 transitions. [2020-10-29 08:48:07,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:48:07,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-29 08:48:07,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:48:07,645 INFO L225 Difference]: With dead ends: 12101 [2020-10-29 08:48:07,645 INFO L226 Difference]: Without dead ends: 8898 [2020-10-29 08:48:07,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:48:07,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8898 states. [2020-10-29 08:48:07,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8898 to 8892. [2020-10-29 08:48:07,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8892 states. [2020-10-29 08:48:07,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8892 states to 8892 states and 13280 transitions. [2020-10-29 08:48:07,979 INFO L78 Accepts]: Start accepts. Automaton has 8892 states and 13280 transitions. Word has length 135 [2020-10-29 08:48:07,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:48:07,982 INFO L481 AbstractCegarLoop]: Abstraction has 8892 states and 13280 transitions. [2020-10-29 08:48:07,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:48:07,982 INFO L276 IsEmpty]: Start isEmpty. Operand 8892 states and 13280 transitions. [2020-10-29 08:48:07,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-29 08:48:07,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:48:07,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:48:07,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:48:07,996 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:48:07,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:48:07,998 INFO L82 PathProgramCache]: Analyzing trace with hash -872358854, now seen corresponding path program 1 times [2020-10-29 08:48:07,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:48:07,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398833028] [2020-10-29 08:48:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:48:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:48:08,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:48:08,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:48:09,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:48:10,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:48:10,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-29 08:48:10,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:48:10,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2417 [2020-10-29 08:48:10,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:48:10,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:48:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:48:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:48:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 08:48:10,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:48:10,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:48:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:48:10,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:48:10,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:48:10,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:48:10,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:48:10,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:48:10,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:48:10,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:48:10,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:48:10,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:48:10,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:48:10,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:48:10,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:48:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:48:10,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:48:10,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:48:10,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 08:48:10,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:48:10,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-29 08:48:10,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:48:10,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:48:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:48:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:48:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 08:48:10,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:48:11,103 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:48:11,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398833028] [2020-10-29 08:48:11,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:48:11,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:48:11,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548065678] [2020-10-29 08:48:11,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:48:11,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:48:11,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:48:11,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:48:11,109 INFO L87 Difference]: Start difference. First operand 8892 states and 13280 transitions. Second operand 7 states. [2020-10-29 08:48:57,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:48:57,555 INFO L93 Difference]: Finished difference Result 26804 states and 41298 transitions. [2020-10-29 08:48:57,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:48:57,558 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2020-10-29 08:48:57,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:48:57,641 INFO L225 Difference]: With dead ends: 26804 [2020-10-29 08:48:57,642 INFO L226 Difference]: Without dead ends: 17918 [2020-10-29 08:48:57,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:48:57,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17918 states. [2020-10-29 08:48:58,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17918 to 17740. [2020-10-29 08:48:58,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17740 states. [2020-10-29 08:48:58,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17740 states to 17740 states and 24068 transitions. [2020-10-29 08:48:58,224 INFO L78 Accepts]: Start accepts. Automaton has 17740 states and 24068 transitions. Word has length 161 [2020-10-29 08:48:58,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:48:58,228 INFO L481 AbstractCegarLoop]: Abstraction has 17740 states and 24068 transitions. [2020-10-29 08:48:58,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:48:58,229 INFO L276 IsEmpty]: Start isEmpty. Operand 17740 states and 24068 transitions. [2020-10-29 08:48:58,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-29 08:48:58,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:48:58,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:48:58,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:48:58,239 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:48:58,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:48:58,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1519245923, now seen corresponding path program 1 times [2020-10-29 08:48:58,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:48:58,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545230816] [2020-10-29 08:48:58,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:48:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:48:58,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:48:58,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:48:59,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:49:00,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:49:00,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-29 08:49:00,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:49:00,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2153 [2020-10-29 08:49:00,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:49:00,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:49:00,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:49:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:49:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 08:49:00,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:49:00,644 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:49:00,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:49:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:49:00,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:49:00,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:49:00,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:49:00,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:49:00,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 08:49:00,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:49:00,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:49:00,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:49:00,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:49:00,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:49:00,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:49:00,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:49:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:49:00,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:49:00,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:49:00,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:49:00,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:49:00,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-29 08:49:00,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:49:00,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:49:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:49:00,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:49:00,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-29 08:49:00,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:49:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:49:01,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545230816] [2020-10-29 08:49:01,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:49:01,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 08:49:01,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482406012] [2020-10-29 08:49:01,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:49:01,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:49:01,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:49:01,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:49:01,270 INFO L87 Difference]: Start difference. First operand 17740 states and 24068 transitions. Second operand 8 states. [2020-10-29 08:49:07,960 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 08:49:53,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:49:53,488 INFO L93 Difference]: Finished difference Result 43149 states and 60197 transitions. [2020-10-29 08:49:53,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:49:53,492 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 202 [2020-10-29 08:49:53,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:49:53,584 INFO L225 Difference]: With dead ends: 43149 [2020-10-29 08:49:53,584 INFO L226 Difference]: Without dead ends: 25415 [2020-10-29 08:49:53,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:49:53,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25415 states. [2020-10-29 08:49:54,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25415 to 25298. [2020-10-29 08:49:54,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25298 states. [2020-10-29 08:49:54,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25298 states to 25298 states and 33724 transitions. [2020-10-29 08:49:54,316 INFO L78 Accepts]: Start accepts. Automaton has 25298 states and 33724 transitions. Word has length 202 [2020-10-29 08:49:54,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:49:54,318 INFO L481 AbstractCegarLoop]: Abstraction has 25298 states and 33724 transitions. [2020-10-29 08:49:54,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:49:54,318 INFO L276 IsEmpty]: Start isEmpty. Operand 25298 states and 33724 transitions. [2020-10-29 08:49:54,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-29 08:49:54,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:49:54,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:49:54,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:49:54,323 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:49:54,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:49:54,324 INFO L82 PathProgramCache]: Analyzing trace with hash -450074124, now seen corresponding path program 1 times [2020-10-29 08:49:54,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:49:54,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215156911] [2020-10-29 08:49:54,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:49:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:49:54,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:49:54,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:49:55,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:49:56,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:49:56,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-29 08:49:56,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:49:56,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1961 [2020-10-29 08:49:56,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:49:56,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:49:56,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:49:56,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:49:56,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 08:49:56,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:49:56,519 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:49:56,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:49:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:49:56,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:49:56,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:49:56,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:49:56,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:49:56,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:49:56,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:49:56,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:49:56,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:49:56,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:49:56,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:49:56,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:49:56,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:49:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:49:56,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:49:56,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:49:56,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:49:56,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:49:56,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-29 08:49:56,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:49:56,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:49:56,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:49:56,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:49:56,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-29 08:49:56,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:49:57,155 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:49:57,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215156911] [2020-10-29 08:49:57,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:49:57,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:49:57,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825862199] [2020-10-29 08:49:57,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:49:57,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:49:57,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:49:57,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:49:57,159 INFO L87 Difference]: Start difference. First operand 25298 states and 33724 transitions. Second operand 7 states. [2020-10-29 08:49:57,349 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 68