/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_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:06:21,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:06:21,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:06:21,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:06:21,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:06:21,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:06:21,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:06:21,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:06:21,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:06:21,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:06:21,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:06:21,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:06:21,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:06:21,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:06:21,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:06:21,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:06:21,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:06:21,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:06:21,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:06:21,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:06:21,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:06:21,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:06:21,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:06:21,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:06:21,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:06:21,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:06:21,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:06:21,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:06:21,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:06:21,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:06:21,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:06:21,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:06:21,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:06:21,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:06:21,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:06:21,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:06:21,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:06:21,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:06:21,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:06:21,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:06:21,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:06:21,260 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 10:06:21,287 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:06:21,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:06:21,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:06:21,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:06:21,289 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:06:21,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:06:21,289 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:06:21,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:06:21,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:06:21,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:06:21,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:06:21,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:06:21,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:06:21,291 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:06:21,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:06:21,291 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:06:21,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:06:21,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:06:21,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:06:21,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:06:21,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:06:21,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:06:21,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:06:21,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:06:21,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:06:21,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:06:21,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:06:21,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:06:21,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:06:21,294 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 10:06:21,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:06:21,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:06:21,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:06:21,789 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:06:21,789 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:06:21,790 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label13.c [2020-09-25 10:06:21,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25b52be74/b90cf5e4d16d4c7ba698d1d2332b846b/FLAG0f467f064 [2020-09-25 10:06:22,550 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:06:22,551 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label13.c [2020-09-25 10:06:22,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25b52be74/b90cf5e4d16d4c7ba698d1d2332b846b/FLAG0f467f064 [2020-09-25 10:06:22,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25b52be74/b90cf5e4d16d4c7ba698d1d2332b846b [2020-09-25 10:06:22,808 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:06:22,815 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:06:22,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:22,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:06:22,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:06:22,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:22" (1/1) ... [2020-09-25 10:06:22,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:22, skipping insertion in model container [2020-09-25 10:06:22,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:22" (1/1) ... [2020-09-25 10:06:22,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:06:22,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:06:23,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:23,426 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:06:23,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:23,710 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:06:23,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:23 WrapperNode [2020-09-25 10:06:23,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:23,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:06:23,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:06:23,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:06:23,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:23" (1/1) ... [2020-09-25 10:06:23,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:23" (1/1) ... [2020-09-25 10:06:23,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:23" (1/1) ... [2020-09-25 10:06:23,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:23" (1/1) ... [2020-09-25 10:06:23,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:23" (1/1) ... [2020-09-25 10:06:23,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:23" (1/1) ... [2020-09-25 10:06:23,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:23" (1/1) ... [2020-09-25 10:06:23,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:06:23,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:06:23,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:06:23,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:06:23,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:23" (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 10:06:23,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:06:23,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:06:23,950 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:06:23,951 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:06:23,951 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:06:23,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:06:23,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:06:23,952 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:06:23,952 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:06:23,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:06:23,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:06:25,690 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:06:25,690 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:06:25,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:25 BoogieIcfgContainer [2020-09-25 10:06:25,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:06:25,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:06:25,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:06:25,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:06:25,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:06:22" (1/3) ... [2020-09-25 10:06:25,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6b3b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:25, skipping insertion in model container [2020-09-25 10:06:25,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:23" (2/3) ... [2020-09-25 10:06:25,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6b3b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:25, skipping insertion in model container [2020-09-25 10:06:25,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:25" (3/3) ... [2020-09-25 10:06:25,719 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label13.c [2020-09-25 10:06:25,729 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:06:25,740 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:06:25,763 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:06:25,798 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:06:25,799 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:06:25,799 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:06:25,799 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:06:25,799 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:06:25,799 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:06:25,800 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:06:25,800 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:06:25,834 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 10:06:25,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 10:06:25,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:25,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:25,859 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:25,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:25,867 INFO L82 PathProgramCache]: Analyzing trace with hash -946278635, now seen corresponding path program 1 times [2020-09-25 10:06:25,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:25,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424349087] [2020-09-25 10:06:25,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:26,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:26,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:26,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:27,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:28,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:28,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:31,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 10:06:31,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:06:31,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 10:06:31,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:31,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:31,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:31,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:06:31,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 10:06:31,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:06:31,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:31,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:31,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:31,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:31,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 10:06:31,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:31,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:31,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:31,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:31,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:06:31,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:06:31,612 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 10:06:31,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424349087] [2020-09-25 10:06:31,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:06:31,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:06:31,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018410095] [2020-09-25 10:06:31,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:06:31,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:31,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:06:31,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:06:31,648 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 10:06:33,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:33,816 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 10:06:33,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:06:33,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-09-25 10:06:33,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:33,846 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 10:06:33,846 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 10:06:33,856 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 10:06:33,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 10:06:33,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 10:06:33,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 10:06:33,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 10:06:34,000 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 151 [2020-09-25 10:06:34,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:34,005 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 10:06:34,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:06:34,006 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 10:06:34,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 10:06:34,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:34,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:34,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:06:34,022 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:34,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:34,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1054538660, now seen corresponding path program 1 times [2020-09-25 10:06:34,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:34,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343695980] [2020-09-25 10:06:34,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:34,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:34,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:34,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:36,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:37,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:38,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:39,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:39,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 10:06:39,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:06:39,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 10:06:39,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:39,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:06:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:06:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 10:06:39,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:39,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:39,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:39,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:39,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:39,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:39,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 10:06:39,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:39,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:39,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:39,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:39,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:06:39,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:39,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:39,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:39,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:39,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:39,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:06:39,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:39,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 10:06:39,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:39,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:06:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:06:39,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:39,844 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 10:06:39,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343695980] [2020-09-25 10:06:39,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:39,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:06:39,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348117812] [2020-09-25 10:06:39,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:06:39,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:39,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:06:39,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:06:39,849 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 13 states. [2020-09-25 10:06:40,235 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-09-25 10:06:40,811 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-25 10:06:41,986 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-09-25 10:06:42,668 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-25 10:06:42,947 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-09-25 10:06:43,936 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-09-25 10:06:47,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:47,049 INFO L93 Difference]: Finished difference Result 2991 states and 3987 transitions. [2020-09-25 10:06:47,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-25 10:06:47,050 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 172 [2020-09-25 10:06:47,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:47,066 INFO L225 Difference]: With dead ends: 2991 [2020-09-25 10:06:47,066 INFO L226 Difference]: Without dead ends: 1757 [2020-09-25 10:06:47,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=361, Invalid=829, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 10:06:47,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2020-09-25 10:06:47,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1534. [2020-09-25 10:06:47,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1534 states. [2020-09-25 10:06:47,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 1749 transitions. [2020-09-25 10:06:47,168 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 1749 transitions. Word has length 172 [2020-09-25 10:06:47,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:47,168 INFO L479 AbstractCegarLoop]: Abstraction has 1534 states and 1749 transitions. [2020-09-25 10:06:47,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:06:47,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 1749 transitions. [2020-09-25 10:06:47,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 10:06:47,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:47,176 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:47,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:06:47,176 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:47,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:47,177 INFO L82 PathProgramCache]: Analyzing trace with hash 349930034, now seen corresponding path program 1 times [2020-09-25 10:06:47,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:47,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066700870] [2020-09-25 10:06:47,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:47,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:47,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:47,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:48,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:48,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:48,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:50,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:51,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:52,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:52,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:52,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 10:06:52,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:06:52,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 10:06:52,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:52,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:06:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:06:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-09-25 10:06:52,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:52,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:52,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:52,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:52,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:52,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:52,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 10:06:52,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:52,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:52,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:06:52,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:52,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:06:52,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:52,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:52,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:53,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:53,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:53,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:06:53,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:53,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 10:06:53,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:53,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:53,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:53,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:53,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:06:53,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:53,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 10:06:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:53,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:53,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:53,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:53,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:06:53,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:53,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 10:06:53,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:53,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:06:53,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:06:53,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 10:06:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:53,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:53,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:53,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:53,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 10:06:53,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:53,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 10:06:53,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:53,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:53,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:06:53,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:53,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 10:06:53,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-25 10:06:54,085 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 31 proven. 17 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-09-25 10:06:54,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066700870] [2020-09-25 10:06:54,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:54,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:06:54,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787672370] [2020-09-25 10:06:54,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:06:54,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:54,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:06:54,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:06:54,089 INFO L87 Difference]: Start difference. First operand 1534 states and 1749 transitions. Second operand 13 states. [2020-09-25 10:06:55,402 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-25 10:06:55,870 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-09-25 10:06:58,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:58,670 INFO L93 Difference]: Finished difference Result 3971 states and 4728 transitions. [2020-09-25 10:06:58,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 10:06:58,673 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 215 [2020-09-25 10:06:58,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:58,688 INFO L225 Difference]: With dead ends: 3971 [2020-09-25 10:06:58,688 INFO L226 Difference]: Without dead ends: 2340 [2020-09-25 10:06:58,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=206, Invalid=496, Unknown=0, NotChecked=0, Total=702 [2020-09-25 10:06:58,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2340 states. [2020-09-25 10:06:58,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2340 to 2042. [2020-09-25 10:06:58,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2042 states. [2020-09-25 10:06:58,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 2352 transitions. [2020-09-25 10:06:58,777 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 2352 transitions. Word has length 215 [2020-09-25 10:06:58,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:58,777 INFO L479 AbstractCegarLoop]: Abstraction has 2042 states and 2352 transitions. [2020-09-25 10:06:58,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:06:58,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 2352 transitions. [2020-09-25 10:06:58,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 10:06:58,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:58,791 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:58,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:06:58,792 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:58,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:58,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1504435910, now seen corresponding path program 1 times [2020-09-25 10:06:58,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:58,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19552892] [2020-09-25 10:06:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:58,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:58,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:59,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:59,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:00,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:00,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:01,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:02,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:03,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:03,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 10:07:03,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:07:03,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-09-25 10:07:03,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:03,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:03,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:07:03,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:07:03,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 10:07:03,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:04,664 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2020-09-25 10:07:04,854 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 50 [2020-09-25 10:07:05,144 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 53 [2020-09-25 10:07:05,398 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 49 [2020-09-25 10:07:05,657 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 45 [2020-09-25 10:07:05,909 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 41 [2020-09-25 10:07:06,151 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 37 [2020-09-25 10:07:06,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:06,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:06,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:06,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:06,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:06,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:07:06,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:06,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:07:06,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:06,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:06,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:06,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:06,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:06,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:07:06,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:06,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:07:06,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:06,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:07:06,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:06,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 10:07:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:06,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:06,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:06,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:06,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:06,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:06,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 10:07:06,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:06,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:06,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:07:06,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:06,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 10:07:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:06,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:06,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:06,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:06,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 10:07:06,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:06,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 10:07:06,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:06,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:06,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:07:06,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:06,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:07:06,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:07,002 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 46 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-09-25 10:07:07,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19552892] [2020-09-25 10:07:07,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:07,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 10:07:07,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457197209] [2020-09-25 10:07:07,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 10:07:07,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:07,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 10:07:07,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:07:07,005 INFO L87 Difference]: Start difference. First operand 2042 states and 2352 transitions. Second operand 20 states. [2020-09-25 10:07:08,250 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-09-25 10:07:08,486 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-09-25 10:07:09,315 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 116 [2020-09-25 10:07:09,973 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 113 [2020-09-25 10:07:10,874 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 110