/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_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:13:13,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:13:13,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:13:13,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:13:13,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:13:13,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:13:13,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:13:13,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:13:13,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:13:13,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:13:13,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:13:13,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:13:13,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:13:13,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:13:13,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:13:13,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:13:13,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:13:13,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:13:13,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:13:13,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:13:13,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:13:13,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:13:13,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:13:13,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:13:13,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:13:13,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:13:13,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:13:13,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:13:13,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:13:13,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:13:13,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:13:13,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:13:13,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:13:13,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:13:13,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:13:13,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:13:13,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:13:13,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:13:13,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:13:13,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:13:13,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:13:13,717 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 14:13:13,774 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:13:13,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:13:13,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:13:13,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:13:13,780 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:13:13,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:13:13,781 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:13:13,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:13:13,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:13:13,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:13:13,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:13:13,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:13:13,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:13:13,783 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:13:13,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:13:13,783 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:13:13,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:13:13,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:13:13,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:13:13,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:13:13,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:13:13,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:13:13,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:13:13,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:13:13,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:13:13,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:13:13,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:13:13,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:13:13,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:13:13,786 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:13:14,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:13:14,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:13:14,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:13:14,321 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:13:14,322 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:13:14,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label41.c [2020-10-28 14:13:14,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21e8b308e/2ed80405c512494ab55f647f4a423802/FLAG22179dacd [2020-10-28 14:13:15,892 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:13:15,894 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label41.c [2020-10-28 14:13:15,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21e8b308e/2ed80405c512494ab55f647f4a423802/FLAG22179dacd [2020-10-28 14:13:16,490 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21e8b308e/2ed80405c512494ab55f647f4a423802 [2020-10-28 14:13:16,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:13:16,499 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:13:16,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:13:16,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:13:16,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:13:16,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:13:16" (1/1) ... [2020-10-28 14:13:16,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70c3986b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:13:16, skipping insertion in model container [2020-10-28 14:13:16,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:13:16" (1/1) ... [2020-10-28 14:13:16,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:13:16,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:13:19,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:13:19,320 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:13:20,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:13:20,517 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:13:20,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:13:20 WrapperNode [2020-10-28 14:13:20,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:13:20,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:13:20,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:13:20,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:13:20,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:13:20" (1/1) ... [2020-10-28 14:13:20,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:13:20" (1/1) ... [2020-10-28 14:13:20,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:13:20" (1/1) ... [2020-10-28 14:13:20,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:13:20" (1/1) ... [2020-10-28 14:13:20,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:13:20" (1/1) ... [2020-10-28 14:13:21,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:13:20" (1/1) ... [2020-10-28 14:13:21,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:13:20" (1/1) ... [2020-10-28 14:13:21,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:13:21,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:13:21,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:13:21,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:13:21,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:13:20" (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 14:13:21,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:13:21,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:13:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:13:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 14:13:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 14:13:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 14:13:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 14:13:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 14:13:21,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 14:13:21,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:13:21,246 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 14:13:21,246 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 14:13:21,246 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 14:13:21,246 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 14:13:21,247 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 14:13:21,247 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 14:13:21,247 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:13:21,247 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:13:21,247 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:13:21,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:13:21,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:13:21,248 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:13:21,248 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:13:21,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:13:21,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:13:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:13:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:13:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:13:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:13:38,172 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:13:38,173 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 14:13:38,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:13:38 BoogieIcfgContainer [2020-10-28 14:13:38,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:13:38,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:13:38,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:13:38,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:13:38,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:13:16" (1/3) ... [2020-10-28 14:13:38,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e8d52f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:13:38, skipping insertion in model container [2020-10-28 14:13:38,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:13:20" (2/3) ... [2020-10-28 14:13:38,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e8d52f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:13:38, skipping insertion in model container [2020-10-28 14:13:38,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:13:38" (3/3) ... [2020-10-28 14:13:38,189 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label41.c [2020-10-28 14:13:38,202 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:13:38,209 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:13:38,224 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:13:38,262 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:13:38,262 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:13:38,263 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:13:38,263 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:13:38,263 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:13:38,263 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:13:38,263 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:13:38,264 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:13:38,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-28 14:13:38,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-28 14:13:38,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:13:38,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:13:38,327 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:13:38,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:13:38,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1524423826, now seen corresponding path program 1 times [2020-10-28 14:13:38,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:13:38,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880977209] [2020-10-28 14:13:38,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:13:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:13:38,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:13:39,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:13:39,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:13:39,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:13:39,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 555 [2020-10-28 14:13:39,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:13:39,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:13:39,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:13:39,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:13:39,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 14:13:39,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 14:13:39,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:13:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:13:39,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:13:39,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:13:39,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:13:39,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:13:39,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 14:13:39,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:13:39,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:13:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:13:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:13:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:13:39,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:13:39,282 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 14:13:39,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880977209] [2020-10-28 14:13:39,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:13:39,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 14:13:39,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604569294] [2020-10-28 14:13:39,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:13:39,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:13:39,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:13:39,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:13:39,318 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 4 states. [2020-10-28 14:13:39,586 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 14:14:12,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:14:12,333 INFO L93 Difference]: Finished difference Result 5117 states and 9608 transitions. [2020-10-28 14:14:12,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:14:12,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-28 14:14:12,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:14:12,395 INFO L225 Difference]: With dead ends: 5117 [2020-10-28 14:14:12,396 INFO L226 Difference]: Without dead ends: 3272 [2020-10-28 14:14:12,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 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 14:14:12,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2020-10-28 14:14:12,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 3201. [2020-10-28 14:14:12,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3201 states. [2020-10-28 14:14:12,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 5485 transitions. [2020-10-28 14:14:12,711 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 5485 transitions. Word has length 13 [2020-10-28 14:14:12,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:14:12,711 INFO L481 AbstractCegarLoop]: Abstraction has 3201 states and 5485 transitions. [2020-10-28 14:14:12,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:14:12,713 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 5485 transitions. [2020-10-28 14:14:12,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 14:14:12,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:14:12,721 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 14:14:12,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:14:12,722 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:14:12,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:14:12,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1349691703, now seen corresponding path program 1 times [2020-10-28 14:14:12,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:14:12,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805433665] [2020-10-28 14:14:12,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:14:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:14:12,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:14:13,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:14:14,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:14:14,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 14:14:14,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:14:14,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1729 [2020-10-28 14:14:14,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:14:14,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:14:14,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:14:14,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:14:14,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 14:14:14,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 14:14:14,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:14:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:14:14,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:14:14,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:14:14,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:14:14,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:14:14,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 14:14:14,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:14:14,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:14:14,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:14:14,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:14:14,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:14:14,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:14:14,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:14:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:14:14,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:14:15,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:14:15,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 14:14:15,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:14:15,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-28 14:14:15,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:14:15,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:14:15,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:14:15,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:14:15,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 14:14:15,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:14:15,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:14:15,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805433665] [2020-10-28 14:14:15,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:14:15,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:14:15,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521683396] [2020-10-28 14:14:15,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:14:15,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:14:15,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:14:15,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:14:15,269 INFO L87 Difference]: Start difference. First operand 3201 states and 5485 transitions. Second operand 7 states. [2020-10-28 14:15:04,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:15:04,541 INFO L93 Difference]: Finished difference Result 9565 states and 16486 transitions. [2020-10-28 14:15:04,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:15:04,544 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 85 [2020-10-28 14:15:04,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:15:04,592 INFO L225 Difference]: With dead ends: 9565 [2020-10-28 14:15:04,592 INFO L226 Difference]: Without dead ends: 6370 [2020-10-28 14:15:04,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:15:04,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6370 states. [2020-10-28 14:15:04,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6370 to 6261. [2020-10-28 14:15:04,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6261 states. [2020-10-28 14:15:04,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6261 states to 6261 states and 10372 transitions. [2020-10-28 14:15:04,854 INFO L78 Accepts]: Start accepts. Automaton has 6261 states and 10372 transitions. Word has length 85 [2020-10-28 14:15:04,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:15:04,855 INFO L481 AbstractCegarLoop]: Abstraction has 6261 states and 10372 transitions. [2020-10-28 14:15:04,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:15:04,856 INFO L276 IsEmpty]: Start isEmpty. Operand 6261 states and 10372 transitions. [2020-10-28 14:15:04,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-28 14:15:04,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:15:04,862 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 14:15:04,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:15:04,863 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:15:04,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:15:04,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1206311414, now seen corresponding path program 1 times [2020-10-28 14:15:04,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:15:04,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960739352] [2020-10-28 14:15:04,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:15:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:15:05,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:15:05,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:15:05,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:15:06,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:15:06,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 14:15:06,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:15:06,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 986 [2020-10-28 14:15:06,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:15:06,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:15:06,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:15:06,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:15:06,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 14:15:06,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:15:06,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:15:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:15:06,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:15:06,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:15:06,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:15:06,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:15:06,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 14:15:06,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:15:06,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:15:06,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:15:06,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:15:06,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:15:06,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:15:06,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:15:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:15:06,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:15:06,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:15:06,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 14:15:06,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:15:06,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 14:15:06,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:15:06,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:15:06,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:15:06,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:15:06,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 14:15:06,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:15:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:15:06,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960739352] [2020-10-28 14:15:06,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:15:06,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:15:06,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446942711] [2020-10-28 14:15:06,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:15:06,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:15:06,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:15:06,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:15:06,513 INFO L87 Difference]: Start difference. First operand 6261 states and 10372 transitions. Second operand 7 states. [2020-10-28 14:15:59,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:15:59,029 INFO L93 Difference]: Finished difference Result 18712 states and 31304 transitions. [2020-10-28 14:15:59,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:15:59,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-10-28 14:15:59,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:15:59,137 INFO L225 Difference]: With dead ends: 18712 [2020-10-28 14:15:59,138 INFO L226 Difference]: Without dead ends: 12457 [2020-10-28 14:15:59,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:15:59,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12457 states. [2020-10-28 14:15:59,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12457 to 12188. [2020-10-28 14:15:59,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12188 states. [2020-10-28 14:15:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12188 states to 12188 states and 17454 transitions. [2020-10-28 14:15:59,745 INFO L78 Accepts]: Start accepts. Automaton has 12188 states and 17454 transitions. Word has length 88 [2020-10-28 14:15:59,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:15:59,747 INFO L481 AbstractCegarLoop]: Abstraction has 12188 states and 17454 transitions. [2020-10-28 14:15:59,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:15:59,748 INFO L276 IsEmpty]: Start isEmpty. Operand 12188 states and 17454 transitions. [2020-10-28 14:15:59,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 14:15:59,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:15:59,766 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 14:15:59,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:15:59,767 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:15:59,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:15:59,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1884174664, now seen corresponding path program 1 times [2020-10-28 14:15:59,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:15:59,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60523102] [2020-10-28 14:15:59,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:15:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:15:59,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:16:00,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:16:01,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:16:01,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 14:16:01,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:16:01,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1447 [2020-10-28 14:16:01,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:16:01,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:16:01,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:16:01,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:16:01,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 14:16:01,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:16:01,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:16:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:16:01,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:16:01,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:16:01,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:16:01,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:16:01,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:16:01,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:16:01,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:16:01,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:16:01,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:16:01,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:16:01,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:16:01,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:16:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:16:01,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:16:01,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:16:01,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 14:16:01,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:16:01,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-28 14:16:01,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:16:01,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:16:01,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:16:01,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:16:01,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 14:16:01,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:16:01,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:16:01,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60523102] [2020-10-28 14:16:01,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:16:01,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:16:01,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241651358] [2020-10-28 14:16:01,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:16:01,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:16:01,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:16:01,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:16:01,945 INFO L87 Difference]: Start difference. First operand 12188 states and 17454 transitions. Second operand 7 states. [2020-10-28 14:17:10,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:17:10,235 INFO L93 Difference]: Finished difference Result 30848 states and 44376 transitions. [2020-10-28 14:17:10,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:17:10,240 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-28 14:17:10,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:17:10,316 INFO L225 Difference]: With dead ends: 30848 [2020-10-28 14:17:10,316 INFO L226 Difference]: Without dead ends: 18666 [2020-10-28 14:17:10,350 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 14:17:10,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18666 states. [2020-10-28 14:17:10,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18666 to 17948. [2020-10-28 14:17:10,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17948 states. [2020-10-28 14:17:10,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17948 states to 17948 states and 23687 transitions. [2020-10-28 14:17:10,850 INFO L78 Accepts]: Start accepts. Automaton has 17948 states and 23687 transitions. Word has length 114 [2020-10-28 14:17:10,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:17:10,851 INFO L481 AbstractCegarLoop]: Abstraction has 17948 states and 23687 transitions. [2020-10-28 14:17:10,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:17:10,851 INFO L276 IsEmpty]: Start isEmpty. Operand 17948 states and 23687 transitions. [2020-10-28 14:17:10,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-28 14:17:10,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:17:10,862 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:17:10,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:17:10,863 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:17:10,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:17:10,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1907960806, now seen corresponding path program 1 times [2020-10-28 14:17:10,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:17:10,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249496692] [2020-10-28 14:17:10,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:17:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:17:11,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:11,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:12,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:17:12,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-28 14:17:12,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:17:12,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1830 [2020-10-28 14:17:12,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:17:12,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:17:12,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:17:12,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:17:12,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-28 14:17:12,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:17:13,121 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 14:17:13,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:17:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:17:13,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:13,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:17:13,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:17:13,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:17:13,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 14:17:13,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:17:13,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:17:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:17:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:17:13,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:17:13,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:17:13,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:17:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:17:13,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:13,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:17:13,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-28 14:17:13,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:17:13,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-28 14:17:13,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:17:13,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:17:13,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:17:13,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:17:13,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-10-28 14:17:13,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:17:14,039 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:17:14,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249496692] [2020-10-28 14:17:14,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:17:14,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:17:14,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316784691] [2020-10-28 14:17:14,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:17:14,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:17:14,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:17:14,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:17:14,042 INFO L87 Difference]: Start difference. First operand 17948 states and 23687 transitions. Second operand 7 states. [2020-10-28 14:17:14,223 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 14:17:18,432 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 66