/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=0.2 --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/Problem02_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:17:37,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:17:37,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:17:37,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:17:37,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:17:37,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:17:37,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:17:37,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:17:37,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:17:37,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:17:37,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:17:37,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:17:37,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:17:37,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:17:37,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:17:37,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:17:37,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:17:37,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:17:37,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:17:37,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:17:37,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:17:37,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:17:37,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:17:37,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:17:37,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:17:37,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:17:37,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:17:37,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:17:37,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:17:37,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:17:37,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:17:37,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:17:37,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:17:37,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:17:37,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:17:37,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:17:37,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:17:37,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:17:37,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:17:37,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:17:37,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:17:37,666 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 11:17:37,705 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:17:37,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:17:37,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:17:37,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:17:37,707 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:17:37,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:17:37,708 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:17:37,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:17:37,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:17:37,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:17:37,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:17:37,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:17:37,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:17:37,709 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:17:37,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:17:37,709 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:17:37,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:17:37,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:17:37,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:17:37,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:17:37,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:17:37,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:17:37,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:17:37,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:17:37,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:17:37,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:17:37,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:17:37,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:17:37,712 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:17:37,712 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:17:38,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:17:38,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:17:38,195 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:17:38,197 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:17:38,198 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:17:38,199 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label51.c [2020-09-25 11:17:38,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19473fa67/d6247555687c4eab9b6bebff788d59da/FLAG9df17f475 [2020-09-25 11:17:38,957 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:17:38,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label51.c [2020-09-25 11:17:38,971 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19473fa67/d6247555687c4eab9b6bebff788d59da/FLAG9df17f475 [2020-09-25 11:17:39,180 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19473fa67/d6247555687c4eab9b6bebff788d59da [2020-09-25 11:17:39,196 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:17:39,205 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:17:39,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:17:39,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:17:39,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:17:39,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:17:39" (1/1) ... [2020-09-25 11:17:39,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:39, skipping insertion in model container [2020-09-25 11:17:39,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:17:39" (1/1) ... [2020-09-25 11:17:39,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:17:39,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:17:39,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:17:39,778 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:17:40,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:17:40,027 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:17:40,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:40 WrapperNode [2020-09-25 11:17:40,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:17:40,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:17:40,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:17:40,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:17:40,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:40" (1/1) ... [2020-09-25 11:17:40,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:40" (1/1) ... [2020-09-25 11:17:40,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:40" (1/1) ... [2020-09-25 11:17:40,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:40" (1/1) ... [2020-09-25 11:17:40,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:40" (1/1) ... [2020-09-25 11:17:40,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:40" (1/1) ... [2020-09-25 11:17:40,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:40" (1/1) ... [2020-09-25 11:17:40,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:17:40,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:17:40,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:17:40,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:17:40,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:40" (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 11:17:40,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:17:40,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:17:40,247 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:17:40,247 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:17:40,247 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:17:40,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:17:40,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:17:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:17:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:17:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:17:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:17:41,759 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:17:41,760 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:17:41,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:17:41 BoogieIcfgContainer [2020-09-25 11:17:41,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:17:41,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:17:41,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:17:41,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:17:41,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:17:39" (1/3) ... [2020-09-25 11:17:41,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:17:41, skipping insertion in model container [2020-09-25 11:17:41,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:40" (2/3) ... [2020-09-25 11:17:41,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:17:41, skipping insertion in model container [2020-09-25 11:17:41,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:17:41" (3/3) ... [2020-09-25 11:17:41,780 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label51.c [2020-09-25 11:17:41,792 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:17:41,805 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:17:41,829 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:17:41,866 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:17:41,867 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:17:41,867 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:17:41,867 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:17:41,867 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:17:41,867 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:17:41,867 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:17:41,868 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:17:41,902 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:17:41,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 11:17:41,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:41,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:41,925 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:41,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:41,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1376443753, now seen corresponding path program 1 times [2020-09-25 11:17:41,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:41,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-09-25 11:17:41,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:42,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:42,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:42,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:44,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:44,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:47,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:47,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 11:17:47,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:17:47,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 11:17:47,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:47,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:47,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:17:47,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:17:47,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 11:17:47,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:17:47,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:47,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:47,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:47,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:47,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:47,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:17:47,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:47,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:47,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:47,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:47,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 11:17:47,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:17:47,580 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 11:17:47,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-09-25 11:17:47,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:17:47,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:17:47,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152787704] [2020-09-25 11:17:47,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:17:47,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:47,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:17:47,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:17:47,617 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:17:49,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:49,965 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 11:17:49,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:17:49,972 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-09-25 11:17:49,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:50,007 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 11:17:50,008 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 11:17:50,018 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 11:17:50,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 11:17:50,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 11:17:50,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 11:17:50,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 11:17:50,129 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 136 [2020-09-25 11:17:50,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:50,131 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 11:17:50,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:17:50,131 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 11:17:50,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 11:17:50,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:50,140 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:50,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:17:50,140 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:50,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:50,141 INFO L82 PathProgramCache]: Analyzing trace with hash 685540285, now seen corresponding path program 1 times [2020-09-25 11:17:50,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:50,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194425209] [2020-09-25 11:17:50,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:50,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:50,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:50,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:50,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:51,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:51,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:52,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:54,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:55,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:55,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 11:17:55,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:17:55,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 11:17:55,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:55,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:55,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:55,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 11:17:55,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 11:17:55,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:17:55,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:55,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:55,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:55,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:55,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:55,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:17:55,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:55,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:55,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:55,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:55,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:55,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:55,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:55,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:55,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:55,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:17:55,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:55,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:17:55,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:55,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:55,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:17:55,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:55,494 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:55,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194425209] [2020-09-25 11:17:55,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:55,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:17:55,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825459746] [2020-09-25 11:17:55,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:17:55,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:55,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:17:55,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:17:55,499 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 5 states. [2020-09-25 11:17:57,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:57,755 INFO L93 Difference]: Finished difference Result 1648 states and 2113 transitions. [2020-09-25 11:17:57,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:17:57,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-25 11:17:57,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:57,768 INFO L225 Difference]: With dead ends: 1648 [2020-09-25 11:17:57,768 INFO L226 Difference]: Without dead ends: 1011 [2020-09-25 11:17:57,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:17:57,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-09-25 11:17:57,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 965. [2020-09-25 11:17:57,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2020-09-25 11:17:57,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1175 transitions. [2020-09-25 11:17:57,815 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1175 transitions. Word has length 154 [2020-09-25 11:17:57,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:57,816 INFO L479 AbstractCegarLoop]: Abstraction has 965 states and 1175 transitions. [2020-09-25 11:17:57,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:17:57,816 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1175 transitions. [2020-09-25 11:17:57,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 11:17:57,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:57,821 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:57,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:17:57,822 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:57,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:57,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1224055138, now seen corresponding path program 1 times [2020-09-25 11:17:57,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:57,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877611600] [2020-09-25 11:17:57,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:57,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:57,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:58,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:58,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:58,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:01,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:02,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:02,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:02,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:02,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 11:18:02,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:18:02,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:18:02,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:02,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:18:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:18:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 11:18:02,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:03,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:03,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:03,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:03,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:03,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:03,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 11:18:03,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:03,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:03,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:18:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:18:03,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:03,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:03,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:03,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:03,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:03,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:18:03,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:03,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 11:18:03,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:03,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:18:03,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:03,678 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:03,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877611600] [2020-09-25 11:18:03,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:03,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:18:03,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023192331] [2020-09-25 11:18:03,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:18:03,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:03,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:18:03,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:18:03,681 INFO L87 Difference]: Start difference. First operand 965 states and 1175 transitions. Second operand 12 states. [2020-09-25 11:18:10,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:10,132 INFO L93 Difference]: Finished difference Result 4815 states and 6965 transitions. [2020-09-25 11:18:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 11:18:10,133 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 155 [2020-09-25 11:18:10,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:10,165 INFO L225 Difference]: With dead ends: 4815 [2020-09-25 11:18:10,165 INFO L226 Difference]: Without dead ends: 3872 [2020-09-25 11:18:10,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2020-09-25 11:18:10,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2020-09-25 11:18:10,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 3237. [2020-09-25 11:18:10,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3237 states. [2020-09-25 11:18:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 3931 transitions. [2020-09-25 11:18:10,335 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 3931 transitions. Word has length 155 [2020-09-25 11:18:10,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:10,336 INFO L479 AbstractCegarLoop]: Abstraction has 3237 states and 3931 transitions. [2020-09-25 11:18:10,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:18:10,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 3931 transitions. [2020-09-25 11:18:10,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 11:18:10,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:10,347 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:10,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:18:10,348 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:10,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:10,348 INFO L82 PathProgramCache]: Analyzing trace with hash 380983242, now seen corresponding path program 1 times [2020-09-25 11:18:10,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:10,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143145230] [2020-09-25 11:18:10,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:10,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:10,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:10,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:13,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:15,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:15,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 11:18:15,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:18:15,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 11:18:15,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:15,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:15,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:18:15,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 11:18:15,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 11:18:15,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:15,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:15,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:15,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:15,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:15,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:15,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:18:15,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:15,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:15,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:15,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:15,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:15,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:15,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:15,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:15,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:15,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:18:15,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:15,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:18:15,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:15,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:15,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:15,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:15,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:15,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:18:15,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 11:18:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:15,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:15,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:15,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:18:15,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:15,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:18:15,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:15,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:15,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:18:15,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:15,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:18:15,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:15,993 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 11:18:15,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143145230] [2020-09-25 11:18:15,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:15,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 11:18:15,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903108688] [2020-09-25 11:18:15,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:18:15,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:15,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:18:15,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:18:15,996 INFO L87 Difference]: Start difference. First operand 3237 states and 3931 transitions. Second operand 13 states. [2020-09-25 11:18:19,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:19,875 INFO L93 Difference]: Finished difference Result 6544 states and 8038 transitions. [2020-09-25 11:18:19,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:18:19,875 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 173 [2020-09-25 11:18:19,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:19,892 INFO L225 Difference]: With dead ends: 6544 [2020-09-25 11:18:19,892 INFO L226 Difference]: Without dead ends: 3329 [2020-09-25 11:18:19,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-09-25 11:18:19,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3329 states. [2020-09-25 11:18:19,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3329 to 3296. [2020-09-25 11:18:19,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3296 states. [2020-09-25 11:18:19,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3296 states to 3296 states and 3998 transitions. [2020-09-25 11:18:19,999 INFO L78 Accepts]: Start accepts. Automaton has 3296 states and 3998 transitions. Word has length 173 [2020-09-25 11:18:20,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:20,001 INFO L479 AbstractCegarLoop]: Abstraction has 3296 states and 3998 transitions. [2020-09-25 11:18:20,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 11:18:20,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3296 states and 3998 transitions. [2020-09-25 11:18:20,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 11:18:20,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:20,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:20,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:18:20,014 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:20,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:20,014 INFO L82 PathProgramCache]: Analyzing trace with hash 494480843, now seen corresponding path program 1 times [2020-09-25 11:18:20,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:20,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839477127] [2020-09-25 11:18:20,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:20,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:20,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:20,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:20,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:23,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:24,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:25,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 11:18:25,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:18:25,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:18:25,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:25,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:25,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:18:25,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:18:25,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 11:18:25,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:18:25,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:25,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:25,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:25,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:25,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 11:18:25,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:25,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:25,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:18:25,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:25,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:18:25,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:25,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:25,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:25,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 11:18:25,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:25,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-25 11:18:25,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:25,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:25,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:25,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:18:25,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:25,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839477127] [2020-09-25 11:18:25,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:25,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:18:25,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473383450] [2020-09-25 11:18:25,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:18:25,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:25,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:18:25,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:18:25,889 INFO L87 Difference]: Start difference. First operand 3296 states and 3998 transitions. Second operand 10 states.