/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:07:48,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:07:48,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:07:48,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:07:48,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:07:48,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:07:48,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:07:48,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:07:48,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:07:48,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:07:48,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:07:48,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:07:48,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:07:48,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:07:48,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:07:48,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:07:48,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:07:48,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:07:48,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:07:48,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:07:48,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:07:48,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:07:48,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:07:48,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:07:48,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:07:48,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:07:48,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:07:48,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:07:48,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:07:48,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:07:48,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:07:48,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:07:48,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:07:48,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:07:48,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:07:48,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:07:48,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:07:48,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:07:48,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:07:48,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:07:48,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:07:48,328 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 [2020-09-25 10:07:48,372 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:07:48,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:07:48,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:07:48,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:07:48,375 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:07:48,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:07:48,376 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:07:48,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:07:48,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:07:48,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:07:48,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:07:48,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:07:48,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:07:48,379 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:07:48,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:07:48,379 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:07:48,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:07:48,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:07:48,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:07:48,380 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:07:48,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:07:48,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:07:48,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:07:48,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:07:48,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:07:48,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:07:48,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:07:48,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:07:48,382 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:07:48,382 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:07:48,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:07:48,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:07:48,858 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:07:48,861 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:07:48,862 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:07:48,863 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-25 10:07:48,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc30cc3a0/e2d217ac9ba84a2ebef5ae0aeca1318c/FLAGfc7c4d8f1 [2020-09-25 10:07:49,621 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:07:49,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-25 10:07:49,636 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc30cc3a0/e2d217ac9ba84a2ebef5ae0aeca1318c/FLAGfc7c4d8f1 [2020-09-25 10:07:49,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc30cc3a0/e2d217ac9ba84a2ebef5ae0aeca1318c [2020-09-25 10:07:49,866 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:07:49,873 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:07:49,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:07:49,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:07:49,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:07:49,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:07:49" (1/1) ... [2020-09-25 10:07:49,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c2caf49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:49, skipping insertion in model container [2020-09-25 10:07:49,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:07:49" (1/1) ... [2020-09-25 10:07:49,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:07:49,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:07:50,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:07:50,460 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:07:50,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:07:50,695 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:07:50,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:50 WrapperNode [2020-09-25 10:07:50,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:07:50,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:07:50,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:07:50,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:07:50,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:50" (1/1) ... [2020-09-25 10:07:50,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:50" (1/1) ... [2020-09-25 10:07:50,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:50" (1/1) ... [2020-09-25 10:07:50,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:50" (1/1) ... [2020-09-25 10:07:50,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:50" (1/1) ... [2020-09-25 10:07:50,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:50" (1/1) ... [2020-09-25 10:07:50,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:50" (1/1) ... [2020-09-25 10:07:50,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:07:50,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:07:50,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:07:50,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:07:50,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:50" (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 [2020-09-25 10:07:50,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:07:50,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:07:50,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:07:50,911 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:07:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:07:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:07:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:07:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:07:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:07:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:07:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:07:52,232 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:07:52,232 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:07:52,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:07:52 BoogieIcfgContainer [2020-09-25 10:07:52,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:07:52,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:07:52,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:07:52,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:07:52,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:07:49" (1/3) ... [2020-09-25 10:07:52,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199be726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:07:52, skipping insertion in model container [2020-09-25 10:07:52,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:50" (2/3) ... [2020-09-25 10:07:52,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199be726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:07:52, skipping insertion in model container [2020-09-25 10:07:52,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:07:52" (3/3) ... [2020-09-25 10:07:52,251 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label58.c [2020-09-25 10:07:52,263 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:07:52,275 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:07:52,298 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:07:52,332 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:07:52,332 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:07:52,333 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:07:52,333 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:07:52,333 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:07:52,333 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:07:52,333 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:07:52,334 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:07:52,367 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 10:07:52,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 10:07:52,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:52,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:07:52,391 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:52,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:52,400 INFO L82 PathProgramCache]: Analyzing trace with hash 2032478133, now seen corresponding path program 1 times [2020-09-25 10:07:52,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:52,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227973489] [2020-09-25 10:07:52,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:52,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:53,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:53,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:53,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:54,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:55,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:55,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:56,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:57,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:57,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 10:07:57,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:07:57,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 10:07:57,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:57,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:07:57,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:07:57,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 10:07:57,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:07:57,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:57,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:58,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:58,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:58,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:58,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 10:07:58,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:58,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:58,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:58,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:58,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:07:58,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:07:58,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227973489] [2020-09-25 10:07:58,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:07:58,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:07:58,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733533402] [2020-09-25 10:07:58,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:07:58,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:58,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:07:58,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:07:58,095 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 10:08:00,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:00,252 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 10:08:00,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:08:00,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-09-25 10:08:00,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:00,281 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 10:08:00,281 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 10:08:00,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:08:00,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 10:08:00,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 10:08:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 10:08:00,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 10:08:00,436 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 127 [2020-09-25 10:08:00,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:00,439 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 10:08:00,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:08:00,439 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 10:08:00,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 10:08:00,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:00,458 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:08:00,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:08:00,460 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:00,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:00,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1111410035, now seen corresponding path program 1 times [2020-09-25 10:08:00,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:00,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798588747] [2020-09-25 10:08:00,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:00,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:00,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:01,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:02,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:05,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:05,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 10:08:05,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:08:05,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 10:08:05,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:05,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:05,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:08:05,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 10:08:05,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:08:05,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 10:08:06,314 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2020-09-25 10:08:06,492 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 44 [2020-09-25 10:08:06,619 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-09-25 10:08:06,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:06,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:07,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:07,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:08:07,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:07,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:08:07,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:07,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:08:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:08:07,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:07,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:08:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:07,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:07,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:07,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:08:07,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:07,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 10:08:07,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:07,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:07,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:08:07,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:07,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:08:07,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:07,294 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:08:07,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798588747] [2020-09-25 10:08:07,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:07,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:08:07,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70123424] [2020-09-25 10:08:07,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:08:07,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:07,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:08:07,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:08:07,299 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 14 states. [2020-09-25 10:08:08,036 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-25 10:08:08,243 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-09-25 10:08:08,662 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 113 [2020-09-25 10:08:09,155 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 110 [2020-09-25 10:08:09,567 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 107 [2020-09-25 10:08:09,767 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-09-25 10:08:10,587 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 104 [2020-09-25 10:08:11,466 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 99 [2020-09-25 10:08:12,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:12,104 INFO L93 Difference]: Finished difference Result 1284 states and 1593 transitions. [2020-09-25 10:08:12,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 10:08:12,106 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 148 [2020-09-25 10:08:12,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:12,111 INFO L225 Difference]: With dead ends: 1284 [2020-09-25 10:08:12,111 INFO L226 Difference]: Without dead ends: 705 [2020-09-25 10:08:12,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2020-09-25 10:08:12,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-09-25 10:08:12,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 684. [2020-09-25 10:08:12,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 684 states. [2020-09-25 10:08:12,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 809 transitions. [2020-09-25 10:08:12,151 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 809 transitions. Word has length 148 [2020-09-25 10:08:12,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:12,152 INFO L479 AbstractCegarLoop]: Abstraction has 684 states and 809 transitions. [2020-09-25 10:08:12,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 10:08:12,152 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 809 transitions. [2020-09-25 10:08:12,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 10:08:12,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:12,157 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:12,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:08:12,157 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:12,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:12,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1441250023, now seen corresponding path program 1 times [2020-09-25 10:08:12,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:12,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688418868] [2020-09-25 10:08:12,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:12,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:12,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:12,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:13,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:14,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:15,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:16,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:17,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:17,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 10:08:17,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:08:17,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 10:08:17,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:17,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:17,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:08:17,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:08:17,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 10:08:17,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:17,840 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-09-25 10:08:18,017 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2020-09-25 10:08:18,249 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 50 [2020-09-25 10:08:18,481 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 46 [2020-09-25 10:08:18,730 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 42 [2020-09-25 10:08:18,935 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 38 [2020-09-25 10:08:19,141 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 34 [2020-09-25 10:08:19,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:19,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:19,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:19,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:08:19,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:19,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 10:08:19,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:19,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:19,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:19,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:19,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:08:19,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:19,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:08:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:19,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:19,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:19,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:19,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:08:19,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:08:19,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 10:08:19,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:19,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:19,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:08:19,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:19,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:08:19,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:08:19,881 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:08:19,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688418868] [2020-09-25 10:08:19,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:19,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 10:08:19,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733290837] [2020-09-25 10:08:19,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 10:08:19,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:19,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 10:08:19,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:08:19,886 INFO L87 Difference]: Start difference. First operand 684 states and 809 transitions. Second operand 20 states. [2020-09-25 10:08:21,041 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-25 10:08:21,282 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-09-25 10:08:21,647 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-09-25 10:08:22,043 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-09-25 10:08:22,476 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 112 [2020-09-25 10:08:22,791 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-09-25 10:08:23,293 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 109 [2020-09-25 10:08:23,782 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 106 [2020-09-25 10:08:24,045 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2020-09-25 10:08:25,089 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-09-25 10:08:25,588 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2020-09-25 10:08:25,939 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-09-25 10:08:26,142 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2020-09-25 10:08:26,546 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 103 [2020-09-25 10:08:26,838 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-09-25 10:08:27,792 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-09-25 10:08:28,210 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-09-25 10:08:28,833 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 98 [2020-09-25 10:08:29,663 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-09-25 10:08:29,949 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-09-25 10:08:30,429 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2020-09-25 10:08:31,049 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2020-09-25 10:08:32,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:32,396 INFO L93 Difference]: Finished difference Result 2209 states and 2813 transitions. [2020-09-25 10:08:32,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-25 10:08:32,397 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 149 [2020-09-25 10:08:32,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:32,409 INFO L225 Difference]: With dead ends: 2209 [2020-09-25 10:08:32,409 INFO L226 Difference]: Without dead ends: 1549 [2020-09-25 10:08:32,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=872, Invalid=2208, Unknown=0, NotChecked=0, Total=3080 [2020-09-25 10:08:32,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2020-09-25 10:08:32,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 1282. [2020-09-25 10:08:32,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1282 states. [2020-09-25 10:08:32,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1522 transitions. [2020-09-25 10:08:32,486 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1522 transitions. Word has length 149 [2020-09-25 10:08:32,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:32,487 INFO L479 AbstractCegarLoop]: Abstraction has 1282 states and 1522 transitions. [2020-09-25 10:08:32,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 10:08:32,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1522 transitions. [2020-09-25 10:08:32,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 10:08:32,492 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:32,492 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:08:32,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:08:32,493 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:32,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:32,493 INFO L82 PathProgramCache]: Analyzing trace with hash -572807862, now seen corresponding path program 1 times [2020-09-25 10:08:32,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:32,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861078298] [2020-09-25 10:08:32,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:32,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:32,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:32,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:33,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:33,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:35,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:35,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:36,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:36,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:37,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:37,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:37,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 10:08:37,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:08:37,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 10:08:37,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:37,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:37,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:08:37,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:08:37,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 10:08:37,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:08:37,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:37,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:37,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:37,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:08:37,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:37,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 10:08:37,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:37,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:08:37,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:37,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:08:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:37,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:37,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:37,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:37,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:37,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:08:37,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 10:08:37,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:37,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:37,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:08:37,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:08:37,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:08:37,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:37,942 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:08:37,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861078298] [2020-09-25 10:08:37,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:37,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:08:37,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427556153] [2020-09-25 10:08:37,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:08:37,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:37,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:08:37,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:08:37,946 INFO L87 Difference]: Start difference. First operand 1282 states and 1522 transitions. Second operand 7 states.