/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:18:48,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:18:48,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:18:48,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:18:48,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:18:48,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:18:48,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:18:48,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:18:48,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:18:48,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:18:48,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:18:48,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:18:48,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:18:48,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:18:48,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:18:48,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:18:48,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:18:48,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:18:48,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:18:48,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:18:48,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:18:48,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:18:48,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:18:48,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:18:48,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:18:48,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:18:48,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:18:48,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:18:48,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:18:48,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:18:48,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:18:48,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:18:48,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:18:48,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:18:48,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:18:48,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:18:48,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:18:48,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:18:48,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:18:48,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:18:48,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:18:48,282 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 [2020-10-28 14:18:48,345 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:18:48,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:18:48,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:18:48,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:18:48,353 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:18:48,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:18:48,353 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:18:48,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:18:48,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:18:48,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:18:48,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:18:48,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:18:48,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:18:48,358 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:18:48,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:18:48,358 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:18:48,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:18:48,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:18:48,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:18:48,359 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:18:48,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:18:48,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:18:48,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:18:48,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:18:48,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:18:48,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:18:48,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:18:48,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:18:48,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:18:48,362 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:18:48,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:18:48,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:18:48,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:18:48,931 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:18:48,932 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:18:48,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label59.c [2020-10-28 14:18:49,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a217a1b8/db46634a3c9c4fab80975545b8819965/FLAGd0da3c0a7 [2020-10-28 14:18:50,476 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:18:50,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label59.c [2020-10-28 14:18:50,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a217a1b8/db46634a3c9c4fab80975545b8819965/FLAGd0da3c0a7 [2020-10-28 14:18:50,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a217a1b8/db46634a3c9c4fab80975545b8819965 [2020-10-28 14:18:50,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:18:50,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:18:50,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:18:50,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:18:50,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:18:50,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:18:50" (1/1) ... [2020-10-28 14:18:50,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@571e44c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:50, skipping insertion in model container [2020-10-28 14:18:50,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:18:50" (1/1) ... [2020-10-28 14:18:50,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:18:50,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:18:53,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:18:53,489 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:18:54,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:18:54,715 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:18:54,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:54 WrapperNode [2020-10-28 14:18:54,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:18:54,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:18:54,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:18:54,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:18:54,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:54" (1/1) ... [2020-10-28 14:18:54,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:54" (1/1) ... [2020-10-28 14:18:54,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:54" (1/1) ... [2020-10-28 14:18:54,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:54" (1/1) ... [2020-10-28 14:18:55,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:54" (1/1) ... [2020-10-28 14:18:55,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:54" (1/1) ... [2020-10-28 14:18:55,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:54" (1/1) ... [2020-10-28 14:18:55,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:18:55,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:18:55,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:18:55,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:18:55,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:54" (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 [2020-10-28 14:18:55,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:18:55,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:18:55,710 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:18:55,710 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 14:18:55,710 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 14:18:55,710 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 14:18:55,711 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 14:18:55,711 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 14:18:55,711 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 14:18:55,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:18:55,711 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 14:18:55,711 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 14:18:55,712 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 14:18:55,712 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 14:18:55,712 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 14:18:55,712 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 14:18:55,712 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:18:55,713 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:18:55,713 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:18:55,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:18:55,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:18:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:18:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:18:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:18:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:18:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:18:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:18:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:18:55,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:19:13,471 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:19:13,472 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 14:19:13,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:19:13 BoogieIcfgContainer [2020-10-28 14:19:13,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:19:13,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:19:13,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:19:13,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:19:13,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:18:50" (1/3) ... [2020-10-28 14:19:13,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79519c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:19:13, skipping insertion in model container [2020-10-28 14:19:13,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:54" (2/3) ... [2020-10-28 14:19:13,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79519c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:19:13, skipping insertion in model container [2020-10-28 14:19:13,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:19:13" (3/3) ... [2020-10-28 14:19:13,494 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label59.c [2020-10-28 14:19:13,510 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:19:13,517 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:19:13,531 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:19:13,592 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:19:13,592 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:19:13,592 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:19:13,592 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:19:13,592 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:19:13,593 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:19:13,593 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:19:13,593 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:19:13,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-28 14:19:13,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 14:19:13,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:19:13,681 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] [2020-10-28 14:19:13,682 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:19:13,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:19:13,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1497183051, now seen corresponding path program 1 times [2020-10-28 14:19:13,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:19:13,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032688892] [2020-10-28 14:19:13,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:19:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:19:13,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:14,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:19:14,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 14:19:14,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:19:14,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 745 [2020-10-28 14:19:14,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:19:14,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:19:14,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:19:14,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:19:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 14:19:14,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 14:19:14,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:19:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:19:14,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:15,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:19:15,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:19:15,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:19:15,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 14:19:15,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:19:15,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:19:15,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:19:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:19:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:19:15,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:19:15,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:19:15,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032688892] [2020-10-28 14:19:15,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:19:15,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 14:19:15,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775639167] [2020-10-28 14:19:15,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:19:15,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:19:15,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:19:15,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:19:15,101 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 4 states. [2020-10-28 14:19:49,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:19:49,260 INFO L93 Difference]: Finished difference Result 5100 states and 9572 transitions. [2020-10-28 14:19:49,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:19:49,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-28 14:19:49,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:19:49,321 INFO L225 Difference]: With dead ends: 5100 [2020-10-28 14:19:49,321 INFO L226 Difference]: Without dead ends: 3255 [2020-10-28 14:19:49,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:19:49,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3255 states. [2020-10-28 14:19:49,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3255 to 3209. [2020-10-28 14:19:49,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3209 states. [2020-10-28 14:19:49,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3209 states to 3209 states and 5178 transitions. [2020-10-28 14:19:49,589 INFO L78 Accepts]: Start accepts. Automaton has 3209 states and 5178 transitions. Word has length 32 [2020-10-28 14:19:49,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:19:49,590 INFO L481 AbstractCegarLoop]: Abstraction has 3209 states and 5178 transitions. [2020-10-28 14:19:49,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:19:49,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3209 states and 5178 transitions. [2020-10-28 14:19:49,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 14:19:49,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:19:49,602 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:19:49,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:19:49,604 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:19:49,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:19:49,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1524982772, now seen corresponding path program 1 times [2020-10-28 14:19:49,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:19:49,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170328430] [2020-10-28 14:19:49,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:19:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:19:49,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:50,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:51,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:19:51,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 14:19:51,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:19:51,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1532 [2020-10-28 14:19:51,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:19:51,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:19:51,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:19:51,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:19:51,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 14:19:51,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:19:51,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:19:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:19:51,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:51,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:19:51,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:19:51,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:19:51,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 14:19:51,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:19:51,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:19:51,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:19:51,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:19:51,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:19:51,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:19:51,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:19:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:19:51,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:51,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:19:51,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 14:19:51,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:19:51,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-28 14:19:51,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:19:51,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:19:51,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:19:51,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:19:51,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 14:19:51,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:19:51,900 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:19:51,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170328430] [2020-10-28 14:19:51,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:19:51,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 14:19:51,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859983975] [2020-10-28 14:19:51,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:19:51,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:19:51,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:19:51,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:19:51,906 INFO L87 Difference]: Start difference. First operand 3209 states and 5178 transitions. Second operand 8 states. [2020-10-28 14:19:53,153 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 14:20:53,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:20:53,976 INFO L93 Difference]: Finished difference Result 12277 states and 20208 transitions. [2020-10-28 14:20:53,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:20:53,989 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2020-10-28 14:20:53,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:20:54,055 INFO L225 Difference]: With dead ends: 12277 [2020-10-28 14:20:54,056 INFO L226 Difference]: Without dead ends: 9074 [2020-10-28 14:20:54,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:20:54,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9074 states. [2020-10-28 14:20:54,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9074 to 9029. [2020-10-28 14:20:54,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9029 states. [2020-10-28 14:20:54,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9029 states to 9029 states and 13499 transitions. [2020-10-28 14:20:54,714 INFO L78 Accepts]: Start accepts. Automaton has 9029 states and 13499 transitions. Word has length 107 [2020-10-28 14:20:54,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:20:54,715 INFO L481 AbstractCegarLoop]: Abstraction has 9029 states and 13499 transitions. [2020-10-28 14:20:54,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:20:54,715 INFO L276 IsEmpty]: Start isEmpty. Operand 9029 states and 13499 transitions. [2020-10-28 14:20:54,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 14:20:54,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:20:54,720 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:20:54,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:20:54,721 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:20:54,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:20:54,724 INFO L82 PathProgramCache]: Analyzing trace with hash -995155661, now seen corresponding path program 1 times [2020-10-28 14:20:54,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:20:54,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931223425] [2020-10-28 14:20:54,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:20:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:20:54,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:20:55,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:20:55,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:20:55,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 14:20:55,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:20:55,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 814 [2020-10-28 14:20:55,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:20:55,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:20:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:20:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:20:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 14:20:55,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:20:55,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:20:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:20:55,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:20:55,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:20:55,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:20:55,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:20:55,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:20:55,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:20:55,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:20:55,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:20:55,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:20:55,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:20:55,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:20:55,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:20:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:20:55,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:20:56,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:20:56,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:20:56,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:20:56,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 14:20:56,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:20:56,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:20:56,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:20:56,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:20:56,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 14:20:56,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:20:56,176 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:20:56,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931223425] [2020-10-28 14:20:56,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:20:56,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:20:56,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030294375] [2020-10-28 14:20:56,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:20:56,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:20:56,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:20:56,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:20:56,183 INFO L87 Difference]: Start difference. First operand 9029 states and 13499 transitions. Second operand 7 states. [2020-10-28 14:20:56,367 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 14:20:58,356 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 14:21:49,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:21:49,957 INFO L93 Difference]: Finished difference Result 27418 states and 41935 transitions. [2020-10-28 14:21:49,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:21:49,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-28 14:21:49,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:21:50,054 INFO L225 Difference]: With dead ends: 27418 [2020-10-28 14:21:50,054 INFO L226 Difference]: Without dead ends: 18395 [2020-10-28 14:21:50,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:21:50,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18395 states. [2020-10-28 14:21:50,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18395 to 18064. [2020-10-28 14:21:50,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18064 states. [2020-10-28 14:21:50,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18064 states to 18064 states and 24555 transitions. [2020-10-28 14:21:50,624 INFO L78 Accepts]: Start accepts. Automaton has 18064 states and 24555 transitions. Word has length 108 [2020-10-28 14:21:50,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:21:50,627 INFO L481 AbstractCegarLoop]: Abstraction has 18064 states and 24555 transitions. [2020-10-28 14:21:50,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:21:50,627 INFO L276 IsEmpty]: Start isEmpty. Operand 18064 states and 24555 transitions. [2020-10-28 14:21:50,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 14:21:50,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:21:50,643 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:21:50,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:21:50,643 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:21:50,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:21:50,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1502890454, now seen corresponding path program 1 times [2020-10-28 14:21:50,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:21:50,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216432464] [2020-10-28 14:21:50,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:21:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:21:50,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:21:50,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:21:51,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:21:51,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-28 14:21:51,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:21:51,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 852 [2020-10-28 14:21:51,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:21:51,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:21:51,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:21:51,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:21:51,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 14:21:51,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:21:51,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:21:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:21:51,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:21:51,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:21:51,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:21:51,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:21:51,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:21:51,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:21:51,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:21:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:21:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:21:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:21:51,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:21:51,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:21:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:21:51,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:21:51,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:21:51,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 14:21:51,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:21:51,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-28 14:21:51,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:21:51,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:21:51,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:21:51,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:21:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 14:21:51,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:21:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:21:52,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216432464] [2020-10-28 14:21:52,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:21:52,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:21:52,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710805478] [2020-10-28 14:21:52,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:21:52,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:21:52,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:21:52,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:21:52,114 INFO L87 Difference]: Start difference. First operand 18064 states and 24555 transitions. Second operand 7 states. [2020-10-28 14:22:48,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:22:48,569 INFO L93 Difference]: Finished difference Result 41282 states and 59593 transitions. [2020-10-28 14:22:48,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:22:48,573 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2020-10-28 14:22:48,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:22:48,660 INFO L225 Difference]: With dead ends: 41282 [2020-10-28 14:22:48,660 INFO L226 Difference]: Without dead ends: 23224 [2020-10-28 14:22:48,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:22:48,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23224 states. [2020-10-28 14:22:49,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23224 to 21386. [2020-10-28 14:22:49,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21386 states. [2020-10-28 14:22:49,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21386 states to 21386 states and 30474 transitions. [2020-10-28 14:22:49,263 INFO L78 Accepts]: Start accepts. Automaton has 21386 states and 30474 transitions. Word has length 149 [2020-10-28 14:22:49,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:22:49,264 INFO L481 AbstractCegarLoop]: Abstraction has 21386 states and 30474 transitions. [2020-10-28 14:22:49,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:22:49,264 INFO L276 IsEmpty]: Start isEmpty. Operand 21386 states and 30474 transitions. [2020-10-28 14:22:49,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-28 14:22:49,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:22:49,267 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:22:49,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:22:49,267 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:22:49,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:22:49,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1344423283, now seen corresponding path program 1 times [2020-10-28 14:22:49,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:22:49,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681877841] [2020-10-28 14:22:49,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:22:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:22:49,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:22:49,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:22:50,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:22:50,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 14:22:50,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:22:50,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1292 [2020-10-28 14:22:50,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:22:50,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:22:50,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:22:50,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:22:50,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-28 14:22:50,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:22:50,798 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 14:22:50,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:22:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:22:50,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:22:50,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:22:50,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:22:50,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:22:50,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:22:50,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:22:50,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:22:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:22:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:22:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:22:50,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:22:50,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:22:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:22:50,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:22:51,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:22:51,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 14:22:51,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:22:51,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-28 14:22:51,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:22:51,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:22:51,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:22:51,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:22:51,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 14:22:51,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:22:51,371 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:22:51,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681877841] [2020-10-28 14:22:51,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:22:51,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 14:22:51,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059751943] [2020-10-28 14:22:51,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:22:51,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:22:51,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:22:51,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:22:51,376 INFO L87 Difference]: Start difference. First operand 21386 states and 30474 transitions. Second operand 8 states. [2020-10-28 14:22:51,552 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 66