/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:04:26,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:04:26,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:04:26,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:04:26,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:04:26,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:04:26,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:04:26,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:04:26,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:04:26,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:04:26,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:04:26,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:04:26,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:04:26,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:04:26,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:04:26,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:04:26,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:04:26,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:04:26,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:04:26,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:04:26,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:04:26,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:04:26,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:04:26,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:04:26,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:04:26,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:04:26,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:04:26,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:04:26,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:04:26,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:04:26,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:04:26,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:04:26,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:04:26,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:04:26,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:04:26,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:04:26,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:04:26,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:04:26,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:04:26,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:04:26,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:04:26,274 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 09:04:26,301 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:04:26,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:04:26,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:04:26,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:04:26,303 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:04:26,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:04:26,303 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:04:26,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:04:26,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:04:26,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:04:26,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:04:26,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:04:26,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:04:26,305 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:04:26,305 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:04:26,305 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:04:26,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:04:26,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:04:26,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:04:26,306 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:04:26,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:04:26,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:04:26,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:04:26,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:04:26,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:04:26,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:04:26,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:04:26,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:04:26,308 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:04:26,308 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:04:26,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:04:26,785 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:04:26,790 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:04:26,792 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:04:26,793 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:04:26,794 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label58.c [2020-09-25 09:04:26,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a44cf85e/1a2faabc9e764966849436d79cb9f5de/FLAG61309f217 [2020-09-25 09:04:27,524 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:04:27,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label58.c [2020-09-25 09:04:27,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a44cf85e/1a2faabc9e764966849436d79cb9f5de/FLAG61309f217 [2020-09-25 09:04:27,780 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a44cf85e/1a2faabc9e764966849436d79cb9f5de [2020-09-25 09:04:27,795 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:04:27,801 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:04:27,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:27,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:04:27,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:04:27,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:27" (1/1) ... [2020-09-25 09:04:27,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12391971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:27, skipping insertion in model container [2020-09-25 09:04:27,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:27" (1/1) ... [2020-09-25 09:04:27,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:04:27,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:04:28,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:28,505 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:04:28,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:28,710 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:04:28,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:28 WrapperNode [2020-09-25 09:04:28,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:28,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:04:28,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:04:28,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:04:28,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:28" (1/1) ... [2020-09-25 09:04:28,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:28" (1/1) ... [2020-09-25 09:04:28,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:28" (1/1) ... [2020-09-25 09:04:28,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:28" (1/1) ... [2020-09-25 09:04:28,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:28" (1/1) ... [2020-09-25 09:04:28,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:28" (1/1) ... [2020-09-25 09:04:28,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:28" (1/1) ... [2020-09-25 09:04:28,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:04:28,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:04:28,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:04:28,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:04:28,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:28" (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 09:04:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:04:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:04:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:04:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:04:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:04:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:04:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:04:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:04:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:04:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:04:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:04:30,357 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:04:30,357 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:04:30,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:30 BoogieIcfgContainer [2020-09-25 09:04:30,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:04:30,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:04:30,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:04:30,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:04:30,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:04:27" (1/3) ... [2020-09-25 09:04:30,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468c7164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:30, skipping insertion in model container [2020-09-25 09:04:30,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:28" (2/3) ... [2020-09-25 09:04:30,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468c7164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:30, skipping insertion in model container [2020-09-25 09:04:30,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:30" (3/3) ... [2020-09-25 09:04:30,376 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label58.c [2020-09-25 09:04:30,388 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:04:30,399 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:04:30,423 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:04:30,457 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:04:30,458 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:04:30,458 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:04:30,458 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:04:30,458 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:04:30,459 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:04:30,459 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:04:30,459 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:04:30,502 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:04:30,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 09:04:30,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:30,543 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] [2020-09-25 09:04:30,544 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:30,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:30,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1064851622, now seen corresponding path program 1 times [2020-09-25 09:04:30,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:30,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760628592] [2020-09-25 09:04:30,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:30,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:31,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:31,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:32,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:33,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:34,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:34,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:35,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:35,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:35,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 09:04:35,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:04:35,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:04:35,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:35,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:04:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:04:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 09:04:35,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:04:36,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:36,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:36,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:36,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:36,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:36,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 09:04:36,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:36,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:36,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:36,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:36,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:04:36,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:36,210 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 09:04:36,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760628592] [2020-09-25 09:04:36,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:04:36,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:04:36,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26065471] [2020-09-25 09:04:36,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:04:36,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:36,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:04:36,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:04:36,247 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 09:04:38,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:38,681 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 09:04:38,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:04:38,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-09-25 09:04:38,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:38,737 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 09:04:38,738 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 09:04:38,748 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 09:04:38,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 09:04:38,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 09:04:38,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 09:04:38,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 09:04:38,874 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 129 [2020-09-25 09:04:38,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:38,875 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 09:04:38,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:04:38,877 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 09:04:38,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 09:04:38,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:38,887 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] [2020-09-25 09:04:38,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:04:38,888 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:38,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:38,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1321748602, now seen corresponding path program 1 times [2020-09-25 09:04:38,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:38,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691193441] [2020-09-25 09:04:38,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:38,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:39,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:39,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:39,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:41,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:41,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:42,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:42,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:43,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:43,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:43,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:43,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 09:04:43,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:04:43,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 09:04:43,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:43,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:04:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:04:43,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 09:04:43,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:44,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:44,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:44,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:44,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:44,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:44,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:04:44,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:44,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:04:44,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 09:04:44,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:44,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:44,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:44,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:44,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:04:44,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:04:44,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 09:04:44,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:44,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:44,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:44,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:44,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:04:44,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:04:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:04:44,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691193441] [2020-09-25 09:04:44,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:44,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:04:44,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141346802] [2020-09-25 09:04:44,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:04:44,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:44,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:04:44,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:44,367 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 6 states. [2020-09-25 09:04:46,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:46,476 INFO L93 Difference]: Finished difference Result 1785 states and 2268 transitions. [2020-09-25 09:04:46,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:04:46,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2020-09-25 09:04:46,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:46,487 INFO L225 Difference]: With dead ends: 1785 [2020-09-25 09:04:46,488 INFO L226 Difference]: Without dead ends: 1074 [2020-09-25 09:04:46,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:04:46,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2020-09-25 09:04:46,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1042. [2020-09-25 09:04:46,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-09-25 09:04:46,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1291 transitions. [2020-09-25 09:04:46,549 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1291 transitions. Word has length 147 [2020-09-25 09:04:46,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:46,550 INFO L479 AbstractCegarLoop]: Abstraction has 1042 states and 1291 transitions. [2020-09-25 09:04:46,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:04:46,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1291 transitions. [2020-09-25 09:04:46,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 09:04:46,555 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:46,556 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:46,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:04:46,556 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:46,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:46,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1793356799, now seen corresponding path program 1 times [2020-09-25 09:04:46,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:46,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137330637] [2020-09-25 09:04:46,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:46,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:46,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:47,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:47,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:51,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:51,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 09:04:51,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:04:51,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 09:04:51,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:51,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:51,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:51,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 09:04:51,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 09:04:51,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:51,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:51,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:51,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:51,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:51,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:51,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:04:51,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:51,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:51,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:51,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:51,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:51,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:51,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:51,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 09:04:51,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:51,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 09:04:51,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:51,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:51,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:51,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:51,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:04:51,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:51,872 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:51,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137330637] [2020-09-25 09:04:51,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:51,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:04:51,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765983155] [2020-09-25 09:04:51,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:04:51,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:51,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:04:51,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:51,877 INFO L87 Difference]: Start difference. First operand 1042 states and 1291 transitions. Second operand 6 states. [2020-09-25 09:04:54,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:54,449 INFO L93 Difference]: Finished difference Result 2840 states and 3665 transitions. [2020-09-25 09:04:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:04:54,450 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2020-09-25 09:04:54,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:54,464 INFO L225 Difference]: With dead ends: 2840 [2020-09-25 09:04:54,465 INFO L226 Difference]: Without dead ends: 1133 [2020-09-25 09:04:54,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:04:54,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2020-09-25 09:04:54,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1121. [2020-09-25 09:04:54,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2020-09-25 09:04:54,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1354 transitions. [2020-09-25 09:04:54,527 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1354 transitions. Word has length 163 [2020-09-25 09:04:54,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:54,527 INFO L479 AbstractCegarLoop]: Abstraction has 1121 states and 1354 transitions. [2020-09-25 09:04:54,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:04:54,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1354 transitions. [2020-09-25 09:04:54,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 09:04:54,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:54,535 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:54,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:04:54,535 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:54,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:54,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1758187067, now seen corresponding path program 1 times [2020-09-25 09:04:54,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:54,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222970603] [2020-09-25 09:04:54,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:54,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:54,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:54,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:57,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:57,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:59,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:59,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 09:04:59,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:04:59,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:04:59,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:59,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:59,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:04:59,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 09:04:59,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 09:04:59,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:59,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:59,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:59,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:59,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:59,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:59,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:04:59,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:59,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:59,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:59,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:59,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:59,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:59,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:59,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:59,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:59,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:04:59,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:59,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 09:04:59,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:59,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:59,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:04:59,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:59,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:04:59,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:00,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222970603] [2020-09-25 09:05:00,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:00,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:05:00,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752467235] [2020-09-25 09:05:00,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:05:00,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:00,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:05:00,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:05:00,133 INFO L87 Difference]: Start difference. First operand 1121 states and 1354 transitions. Second operand 9 states. [2020-09-25 09:05:04,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:04,729 INFO L93 Difference]: Finished difference Result 3344 states and 4309 transitions. [2020-09-25 09:05:04,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:05:04,729 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-09-25 09:05:04,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:04,744 INFO L225 Difference]: With dead ends: 3344 [2020-09-25 09:05:04,744 INFO L226 Difference]: Without dead ends: 2152 [2020-09-25 09:05:04,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:05:04,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2020-09-25 09:05:04,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 2100. [2020-09-25 09:05:04,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2100 states. [2020-09-25 09:05:04,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2513 transitions. [2020-09-25 09:05:04,824 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2513 transitions. Word has length 167 [2020-09-25 09:05:04,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:04,825 INFO L479 AbstractCegarLoop]: Abstraction has 2100 states and 2513 transitions. [2020-09-25 09:05:04,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:05:04,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2513 transitions. [2020-09-25 09:05:04,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 09:05:04,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:04,834 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 09:05:04,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:05:04,835 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:04,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:04,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1831307549, now seen corresponding path program 1 times [2020-09-25 09:05:04,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:04,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293825543] [2020-09-25 09:05:04,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:04,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:04,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:05,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:05,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:05,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:06,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:06,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:09,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:09,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 09:05:09,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:05:09,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 09:05:09,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:09,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:09,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:09,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 09:05:09,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 09:05:09,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:10,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:10,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:10,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:10,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:05:10,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:10,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:05:10,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:10,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:10,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:10,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:10,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:10,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:05:10,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:05:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:10,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:10,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:10,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:05:10,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:10,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:05:10,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:10,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:10,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:10,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:10,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:10,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:05:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:10,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:10,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:10,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 09:05:10,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:10,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 09:05:10,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:10,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:10,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:10,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:10,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 09:05:10,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:10,260 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 09:05:10,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293825543] [2020-09-25 09:05:10,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:10,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:05:10,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462738893] [2020-09-25 09:05:10,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:05:10,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:10,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:05:10,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:05:10,264 INFO L87 Difference]: Start difference. First operand 2100 states and 2513 transitions. Second operand 5 states. [2020-09-25 09:05:12,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:12,056 INFO L93 Difference]: Finished difference Result 5317 states and 6572 transitions. [2020-09-25 09:05:12,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:05:12,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 09:05:12,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:12,076 INFO L225 Difference]: With dead ends: 5317 [2020-09-25 09:05:12,076 INFO L226 Difference]: Without dead ends: 3239 [2020-09-25 09:05:12,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 09:05:12,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3239 states. [2020-09-25 09:05:12,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3239 to 3170. [2020-09-25 09:05:12,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3170 states. [2020-09-25 09:05:12,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3170 states to 3170 states and 3771 transitions. [2020-09-25 09:05:12,174 INFO L78 Accepts]: Start accepts. Automaton has 3170 states and 3771 transitions. Word has length 191 [2020-09-25 09:05:12,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:12,174 INFO L479 AbstractCegarLoop]: Abstraction has 3170 states and 3771 transitions. [2020-09-25 09:05:12,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:05:12,174 INFO L276 IsEmpty]: Start isEmpty. Operand 3170 states and 3771 transitions. [2020-09-25 09:05:12,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 09:05:12,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:12,186 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 09:05:12,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:05:12,187 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:12,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:12,187 INFO L82 PathProgramCache]: Analyzing trace with hash -276703914, now seen corresponding path program 1 times [2020-09-25 09:05:12,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:12,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872630405] [2020-09-25 09:05:12,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:12,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:12,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:12,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:12,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:14,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:14,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking...