/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:17:42,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:17:42,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:17:42,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:17:42,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:17:42,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:17:42,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:17:42,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:17:42,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:17:42,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:17:42,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:17:42,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:17:42,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:17:42,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:17:42,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:17:42,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:17:42,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:17:42,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:17:42,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:17:42,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:17:42,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:17:42,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:17:42,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:17:42,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:17:42,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:17:42,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:17:42,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:17:42,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:17:42,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:17:42,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:17:42,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:17:42,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:17:42,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:17:42,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:17:42,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:17:42,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:17:42,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:17:42,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:17:42,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:17:42,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:17:42,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:17:42,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:17:42,358 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:17:42,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:17:42,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:17:42,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:17:42,361 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:17:42,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:17:42,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:17:42,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:17:42,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:17:42,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:17:42,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:17:42,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:17:42,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:17:42,365 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:17:42,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:17:42,365 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:17:42,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:17:42,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:17:42,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:17:42,366 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:17:42,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:17:42,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:17:42,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:17:42,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:17:42,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:17:42,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:17:42,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:17:42,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:17:42,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:17:42,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:17:42,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:17:42,910 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:17:42,916 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:17:42,920 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:17:42,921 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:17:42,922 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-25 11:17:43,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abd98c2f0/972514a9f98a4a5b9964e5da0c57316c/FLAG3675e8557 [2020-09-25 11:17:43,685 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:17:43,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-25 11:17:43,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abd98c2f0/972514a9f98a4a5b9964e5da0c57316c/FLAG3675e8557 [2020-09-25 11:17:43,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abd98c2f0/972514a9f98a4a5b9964e5da0c57316c [2020-09-25 11:17:43,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:17:43,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:17:43,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:17:43,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:17:43,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:17:43,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:17:43" (1/1) ... [2020-09-25 11:17:43,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0614b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:43, skipping insertion in model container [2020-09-25 11:17:43,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:17:43" (1/1) ... [2020-09-25 11:17:43,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:17:44,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:17:44,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:17:44,628 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:17:44,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:17:44,839 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:17:44,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:44 WrapperNode [2020-09-25 11:17:44,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:17:44,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:17:44,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:17:44,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:17:44,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:44" (1/1) ... [2020-09-25 11:17:44,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:44" (1/1) ... [2020-09-25 11:17:44,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:44" (1/1) ... [2020-09-25 11:17:44,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:44" (1/1) ... [2020-09-25 11:17:44,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:44" (1/1) ... [2020-09-25 11:17:44,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:44" (1/1) ... [2020-09-25 11:17:44,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:44" (1/1) ... [2020-09-25 11:17:44,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:17:44,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:17:44,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:17:44,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:17:44,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:17:45,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:17:45,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:17:45,114 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:17:45,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:17:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:17:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:17:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:17:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:17:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:17:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:17:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:17:46,788 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:17:46,788 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:17:46,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:17:46 BoogieIcfgContainer [2020-09-25 11:17:46,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:17:46,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:17:46,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:17:46,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:17:46,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:17:43" (1/3) ... [2020-09-25 11:17:46,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e437f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:17:46, skipping insertion in model container [2020-09-25 11:17:46,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:44" (2/3) ... [2020-09-25 11:17:46,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e437f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:17:46, skipping insertion in model container [2020-09-25 11:17:46,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:17:46" (3/3) ... [2020-09-25 11:17:46,810 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label54.c [2020-09-25 11:17:46,823 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:17:46,835 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:17:46,858 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:17:46,895 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:17:46,895 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:17:46,895 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:17:46,895 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:17:46,896 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:17:46,896 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:17:46,896 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:17:46,896 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:17:46,931 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:17:46,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 11:17:46,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:46,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:46,955 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:46,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:46,963 INFO L82 PathProgramCache]: Analyzing trace with hash 79338610, now seen corresponding path program 1 times [2020-09-25 11:17:46,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:46,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967537662] [2020-09-25 11:17:46,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:47,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:47,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:47,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:48,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:48,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:49,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:50,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:51,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:52,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:52,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 11:17:52,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:17:52,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 11:17:52,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:52,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:52,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:17:52,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:17:52,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 11:17:52,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:17:52,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:52,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:52,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:52,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:52,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:52,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 11:17:52,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:52,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:52,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:52,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:52,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:17:52,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:52,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967537662] [2020-09-25 11:17:52,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:17:52,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:17:52,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248290277] [2020-09-25 11:17:52,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:17:52,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:52,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:17:52,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:17:52,695 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 11:17:55,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:55,255 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-25 11:17:55,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:17:55,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-09-25 11:17:55,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:55,299 INFO L225 Difference]: With dead ends: 1248 [2020-09-25 11:17:55,300 INFO L226 Difference]: Without dead ends: 670 [2020-09-25 11:17:55,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:17:55,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-25 11:17:55,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-25 11:17:55,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 11:17:55,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 11:17:55,433 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 127 [2020-09-25 11:17:55,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:55,435 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 11:17:55,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:17:55,437 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 11:17:55,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 11:17:55,452 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:55,453 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:55,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:17:55,455 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:55,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:55,455 INFO L82 PathProgramCache]: Analyzing trace with hash -15410791, now seen corresponding path program 1 times [2020-09-25 11:17:55,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:55,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635472557] [2020-09-25 11:17:55,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:55,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:55,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:55,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:55,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:57,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:58,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:59,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:59,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:00,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:00,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 11:18:00,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:18:00,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 11:18:00,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:00,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:00,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:00,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 11:18:00,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 11:18:00,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:00,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:00,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:00,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:00,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:00,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:00,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:18:00,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:00,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:00,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:00,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:00,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:00,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:00,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:00,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:00,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:00,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:18:00,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:00,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:18:00,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:00,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:00,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:00,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:00,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 11:18:00,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:00,791 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:00,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635472557] [2020-09-25 11:18:00,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:00,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:18:00,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229248927] [2020-09-25 11:18:00,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:18:00,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:00,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:18:00,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:18:00,796 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-25 11:18:02,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:02,746 INFO L93 Difference]: Finished difference Result 1400 states and 1694 transitions. [2020-09-25 11:18:02,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:18:02,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-09-25 11:18:02,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:02,753 INFO L225 Difference]: With dead ends: 1400 [2020-09-25 11:18:02,754 INFO L226 Difference]: Without dead ends: 801 [2020-09-25 11:18:02,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:18:02,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2020-09-25 11:18:02,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 776. [2020-09-25 11:18:02,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2020-09-25 11:18:02,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 898 transitions. [2020-09-25 11:18:02,794 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 898 transitions. Word has length 144 [2020-09-25 11:18:02,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:02,795 INFO L479 AbstractCegarLoop]: Abstraction has 776 states and 898 transitions. [2020-09-25 11:18:02,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:18:02,795 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 898 transitions. [2020-09-25 11:18:02,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 11:18:02,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:02,799 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:02,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:18:02,800 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:02,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:02,800 INFO L82 PathProgramCache]: Analyzing trace with hash 75393616, now seen corresponding path program 1 times [2020-09-25 11:18:02,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:02,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869325591] [2020-09-25 11:18:02,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:02,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:02,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:03,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:03,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:03,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:04,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:04,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:04,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:05,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:06,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:06,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:07,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:07,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 11:18:07,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:18:07,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 11:18:07,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:07,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:07,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:07,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 11:18:07,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 11:18:07,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:07,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:07,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:07,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:07,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:07,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:07,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:18:07,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:07,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:07,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:07,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:07,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:07,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:08,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:08,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:08,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:08,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:08,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:08,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:18:08,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:08,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:08,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:08,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:18:08,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:08,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869325591] [2020-09-25 11:18:08,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:08,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:18:08,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655332377] [2020-09-25 11:18:08,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:18:08,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:08,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:18:08,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:18:08,084 INFO L87 Difference]: Start difference. First operand 776 states and 898 transitions. Second operand 5 states. [2020-09-25 11:18:10,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:10,334 INFO L93 Difference]: Finished difference Result 2094 states and 2489 transitions. [2020-09-25 11:18:10,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:18:10,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-25 11:18:10,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:10,357 INFO L225 Difference]: With dead ends: 2094 [2020-09-25 11:18:10,357 INFO L226 Difference]: Without dead ends: 1340 [2020-09-25 11:18:10,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:18:10,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2020-09-25 11:18:10,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1242. [2020-09-25 11:18:10,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1242 states. [2020-09-25 11:18:10,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1463 transitions. [2020-09-25 11:18:10,432 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1463 transitions. Word has length 149 [2020-09-25 11:18:10,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:10,434 INFO L479 AbstractCegarLoop]: Abstraction has 1242 states and 1463 transitions. [2020-09-25 11:18:10,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:18:10,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1463 transitions. [2020-09-25 11:18:10,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 11:18:10,452 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:10,453 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:10,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:18:10,456 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:10,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:10,456 INFO L82 PathProgramCache]: Analyzing trace with hash -452920607, now seen corresponding path program 1 times [2020-09-25 11:18:10,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:10,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703726797] [2020-09-25 11:18:10,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:10,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:10,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:10,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:10,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:11,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:11,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:12,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:15,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:15,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:15,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 11:18:15,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:18:15,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 11:18:15,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:15,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:15,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:18:15,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:18:15,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 11:18:15,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:18:15,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:15,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:15,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:15,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:15,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:15,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:18:15,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:15,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:15,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:15,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:15,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:18:15,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:15,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:15,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:15,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:15,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:15,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:15,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 11:18:15,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:15,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:15,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:15,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:15,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:18:15,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:18:15,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703726797] [2020-09-25 11:18:15,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:15,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:18:15,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044635613] [2020-09-25 11:18:15,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:18:15,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:15,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:18:15,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:18:15,874 INFO L87 Difference]: Start difference. First operand 1242 states and 1463 transitions. Second operand 6 states. [2020-09-25 11:18:17,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:17,976 INFO L93 Difference]: Finished difference Result 3633 states and 4429 transitions. [2020-09-25 11:18:17,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:18:17,977 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2020-09-25 11:18:17,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:17,994 INFO L225 Difference]: With dead ends: 3633 [2020-09-25 11:18:17,994 INFO L226 Difference]: Without dead ends: 2413 [2020-09-25 11:18:18,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 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 11:18:18,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2020-09-25 11:18:18,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 2298. [2020-09-25 11:18:18,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2298 states. [2020-09-25 11:18:18,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 2733 transitions. [2020-09-25 11:18:18,077 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 2733 transitions. Word has length 156 [2020-09-25 11:18:18,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:18,077 INFO L479 AbstractCegarLoop]: Abstraction has 2298 states and 2733 transitions. [2020-09-25 11:18:18,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:18:18,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 2733 transitions. [2020-09-25 11:18:18,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 11:18:18,087 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:18,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:18,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:18:18,087 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:18,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:18,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1333944864, now seen corresponding path program 1 times [2020-09-25 11:18:18,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:18,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346591091] [2020-09-25 11:18:18,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:18,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:18,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:18,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:18,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:23,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:23,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 11:18:23,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:18:23,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 11:18:23,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:23,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:23,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:18:23,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-25 11:18:23,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 11:18:23,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:18:23,806 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 35 [2020-09-25 11:18:23,935 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 33 [2020-09-25 11:18:24,070 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 31 [2020-09-25 11:18:24,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:24,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:24,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:24,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:24,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:24,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:18:24,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:24,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:24,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:24,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:24,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:24,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:24,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:24,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:24,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:24,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:18:24,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:24,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:18:24,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:24,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:24,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:24,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 11:18:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:24,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:24,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:24,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:24,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:24,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 11:18:24,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:24,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:18:24,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:24,651 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 11:18:24,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346591091] [2020-09-25 11:18:24,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:24,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 11:18:24,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943329022] [2020-09-25 11:18:24,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 11:18:24,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:24,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 11:18:24,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:18:24,654 INFO L87 Difference]: Start difference. First operand 2298 states and 2733 transitions. Second operand 14 states. [2020-09-25 11:18:25,436 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-09-25 11:18:25,939 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2020-09-25 11:18:26,363 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2020-09-25 11:18:27,559 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2020-09-25 11:18:28,602 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2020-09-25 11:18:30,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:30,214 INFO L93 Difference]: Finished difference Result 5675 states and 7022 transitions. [2020-09-25 11:18:30,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 11:18:30,214 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 180 [2020-09-25 11:18:30,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:30,233 INFO L225 Difference]: With dead ends: 5675 [2020-09-25 11:18:30,233 INFO L226 Difference]: Without dead ends: 3399 [2020-09-25 11:18:30,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2020-09-25 11:18:30,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3399 states. [2020-09-25 11:18:30,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3399 to 3221. [2020-09-25 11:18:30,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3221 states. [2020-09-25 11:18:30,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 3792 transitions. [2020-09-25 11:18:30,358 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 3792 transitions. Word has length 180 [2020-09-25 11:18:30,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:30,359 INFO L479 AbstractCegarLoop]: Abstraction has 3221 states and 3792 transitions. [2020-09-25 11:18:30,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 11:18:30,359 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 3792 transitions. [2020-09-25 11:18:30,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 11:18:30,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:30,372 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, 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 11:18:30,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:18:30,373 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:30,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:30,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1760611294, now seen corresponding path program 1 times [2020-09-25 11:18:30,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:30,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891368011] [2020-09-25 11:18:30,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:30,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:30,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:30,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking...