/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=0.8 --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_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:53:42,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:53:42,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:53:42,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:53:42,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:53:42,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:53:42,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:53:42,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:53:42,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:53:42,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:53:42,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:53:42,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:53:42,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:53:42,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:53:42,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:53:42,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:53:42,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:53:42,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:53:42,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:53:42,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:53:42,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:53:42,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:53:42,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:53:42,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:53:42,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:53:42,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:53:42,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:53:42,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:53:42,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:53:42,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:53:42,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:53:42,951 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:53:42,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:53:42,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:53:42,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:53:42,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:53:42,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:53:42,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:53:42,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:53:42,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:53:42,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:53:42,959 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 07:53:43,002 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:53:43,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:53:43,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:53:43,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:53:43,005 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:53:43,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:53:43,006 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:53:43,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:53:43,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:53:43,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:53:43,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:53:43,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:53:43,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:53:43,009 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:53:43,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:53:43,009 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:53:43,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:53:43,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:53:43,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:53:43,010 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:53:43,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:53:43,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:53:43,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:53:43,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:53:43,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:53:43,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:53:43,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:53:43,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:53:43,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:53:43,012 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:53:43,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:53:43,499 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:53:43,504 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:53:43,506 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:53:43,507 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:53:43,508 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label25.c [2020-09-25 07:53:43,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e117f594a/aeaba41167164787be0c16d20cfebfc0/FLAGf962190fc [2020-09-25 07:53:44,284 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:53:44,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label25.c [2020-09-25 07:53:44,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e117f594a/aeaba41167164787be0c16d20cfebfc0/FLAGf962190fc [2020-09-25 07:53:44,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e117f594a/aeaba41167164787be0c16d20cfebfc0 [2020-09-25 07:53:44,536 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:53:44,543 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:53:44,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:53:44,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:53:44,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:53:44,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:53:44" (1/1) ... [2020-09-25 07:53:44,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:44, skipping insertion in model container [2020-09-25 07:53:44,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:53:44" (1/1) ... [2020-09-25 07:53:44,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:53:44,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:53:45,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:53:45,086 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:53:45,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:53:45,344 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:53:45,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:45 WrapperNode [2020-09-25 07:53:45,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:53:45,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:53:45,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:53:45,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:53:45,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:45" (1/1) ... [2020-09-25 07:53:45,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:45" (1/1) ... [2020-09-25 07:53:45,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:45" (1/1) ... [2020-09-25 07:53:45,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:45" (1/1) ... [2020-09-25 07:53:45,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:45" (1/1) ... [2020-09-25 07:53:45,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:45" (1/1) ... [2020-09-25 07:53:45,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:45" (1/1) ... [2020-09-25 07:53:45,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:53:45,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:53:45,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:53:45,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:53:45,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:45" (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 07:53:45,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:53:45,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:53:45,555 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:53:45,556 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:53:45,556 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:53:45,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:53:45,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:53:45,556 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:53:45,556 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:53:45,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:53:45,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:53:46,942 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:53:46,943 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:53:46,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:53:46 BoogieIcfgContainer [2020-09-25 07:53:46,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:53:46,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:53:46,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:53:46,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:53:46,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:53:44" (1/3) ... [2020-09-25 07:53:46,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:53:46, skipping insertion in model container [2020-09-25 07:53:46,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:45" (2/3) ... [2020-09-25 07:53:46,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:53:46, skipping insertion in model container [2020-09-25 07:53:46,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:53:46" (3/3) ... [2020-09-25 07:53:46,968 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label25.c [2020-09-25 07:53:46,981 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:53:46,994 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:53:47,018 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:53:47,055 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:53:47,055 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:53:47,056 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:53:47,056 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:53:47,056 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:53:47,056 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:53:47,056 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:53:47,056 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:53:47,091 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 07:53:47,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 07:53:47,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:47,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:53:47,121 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:47,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:47,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1730766665, now seen corresponding path program 1 times [2020-09-25 07:53:47,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:47,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11241220] [2020-09-25 07:53:47,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:47,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:48,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:48,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:48,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:48,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:51,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:51,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:52,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:52,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:52,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 07:53:52,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:53:52,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-09-25 07:53:52,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:52,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:52,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:53:52,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 07:53:52,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 07:53:52,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:53:52,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:52,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:52,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:52,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:52,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:52,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:53:52,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:52,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:52,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:52,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:52,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 07:53:52,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:52,878 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 07:53:52,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11241220] [2020-09-25 07:53:52,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:53:52,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:53:52,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083650816] [2020-09-25 07:53:52,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:53:52,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:52,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:53:52,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:53:52,913 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 07:53:55,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:55,356 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 07:53:55,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:53:55,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-09-25 07:53:55,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:55,387 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 07:53:55,387 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 07:53:55,399 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 07:53:55,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 07:53:55,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 07:53:55,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 07:53:55,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 07:53:55,511 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 160 [2020-09-25 07:53:55,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:55,512 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 07:53:55,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:53:55,513 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 07:53:55,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 07:53:55,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:55,522 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:55,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:53:55,523 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:55,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:55,523 INFO L82 PathProgramCache]: Analyzing trace with hash -859680355, now seen corresponding path program 1 times [2020-09-25 07:53:55,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:55,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119613785] [2020-09-25 07:53:55,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:55,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:55,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:55,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:55,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:56,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:58,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:00,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:00,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 07:54:00,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:54:00,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:54:00,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:00,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:00,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:54:00,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 07:54:00,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-09-25 07:54:00,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:00,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:00,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:00,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:00,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:00,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:00,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 07:54:00,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:00,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:00,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:00,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:00,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 07:54:00,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:00,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:54:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:00,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:00,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:00,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:00,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:54:00,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:54:00,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 07:54:00,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:00,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:00,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:00,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:54:00,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:00,863 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 07:54:00,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119613785] [2020-09-25 07:54:00,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:54:00,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:54:00,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286058387] [2020-09-25 07:54:00,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:54:00,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:00,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:54:00,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:54:00,869 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 6 states. [2020-09-25 07:54:03,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:03,323 INFO L93 Difference]: Finished difference Result 1775 states and 2318 transitions. [2020-09-25 07:54:03,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:54:03,325 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2020-09-25 07:54:03,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:03,346 INFO L225 Difference]: With dead ends: 1775 [2020-09-25 07:54:03,347 INFO L226 Difference]: Without dead ends: 1132 [2020-09-25 07:54:03,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:54:03,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2020-09-25 07:54:03,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1120. [2020-09-25 07:54:03,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1120 states. [2020-09-25 07:54:03,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1466 transitions. [2020-09-25 07:54:03,423 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1466 transitions. Word has length 178 [2020-09-25 07:54:03,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:03,425 INFO L479 AbstractCegarLoop]: Abstraction has 1120 states and 1466 transitions. [2020-09-25 07:54:03,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:54:03,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1466 transitions. [2020-09-25 07:54:03,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 07:54:03,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:03,433 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:03,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:54:03,434 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:03,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:03,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1129646447, now seen corresponding path program 1 times [2020-09-25 07:54:03,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:03,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860307009] [2020-09-25 07:54:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:03,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:03,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:04,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:04,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:04,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:04,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:05,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:08,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:08,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 07:54:08,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:54:08,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 07:54:08,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:08,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:54:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 07:54:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 07:54:08,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:08,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:08,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:08,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:08,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:08,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:08,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:54:08,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:08,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:54:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:54:08,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:08,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:54:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:08,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:08,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:08,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:54:08,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:08,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 07:54:08,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:08,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:08,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:08,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:08,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 07:54:08,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:08,814 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:54:08,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860307009] [2020-09-25 07:54:08,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:54:08,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:54:08,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831541483] [2020-09-25 07:54:08,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:54:08,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:08,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:54:08,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:54:08,818 INFO L87 Difference]: Start difference. First operand 1120 states and 1466 transitions. Second operand 5 states. [2020-09-25 07:54:11,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:11,102 INFO L93 Difference]: Finished difference Result 2834 states and 3829 transitions. [2020-09-25 07:54:11,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:54:11,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-09-25 07:54:11,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:11,115 INFO L225 Difference]: With dead ends: 2834 [2020-09-25 07:54:11,119 INFO L226 Difference]: Without dead ends: 1359 [2020-09-25 07:54:11,126 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 07:54:11,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2020-09-25 07:54:11,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1196. [2020-09-25 07:54:11,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1196 states. [2020-09-25 07:54:11,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1450 transitions. [2020-09-25 07:54:11,184 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1450 transitions. Word has length 198 [2020-09-25 07:54:11,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:11,185 INFO L479 AbstractCegarLoop]: Abstraction has 1196 states and 1450 transitions. [2020-09-25 07:54:11,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:54:11,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1450 transitions. [2020-09-25 07:54:11,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 07:54:11,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:11,192 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:11,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:54:11,193 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:11,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:11,202 INFO L82 PathProgramCache]: Analyzing trace with hash 380278058, now seen corresponding path program 1 times [2020-09-25 07:54:11,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:11,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203227154] [2020-09-25 07:54:11,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:11,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:11,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:11,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:15,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:15,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:16,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:16,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-09-25 07:54:16,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:54:16,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 07:54:16,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:16,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:16,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:54:16,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 07:54:16,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:54:16,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:16,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:16,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:16,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:16,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:16,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:16,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 07:54:16,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:16,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:16,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:16,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:16,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:54:16,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:16,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:54:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:16,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:16,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:16,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:54:16,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:16,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 07:54:16,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:16,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:16,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:54:16,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:54:16,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:54:16,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:16,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 07:54:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:16,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:16,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:16,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:54:16,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:16,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:54:16,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:16,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:16,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:54:16,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:54:16,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:54:16,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:54:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 07:54:16,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203227154] [2020-09-25 07:54:16,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:54:16,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:54:16,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421173027] [2020-09-25 07:54:16,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:54:16,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:16,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:54:16,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:54:16,640 INFO L87 Difference]: Start difference. First operand 1196 states and 1450 transitions. Second operand 7 states. [2020-09-25 07:54:18,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:18,523 INFO L93 Difference]: Finished difference Result 3154 states and 3930 transitions. [2020-09-25 07:54:18,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:54:18,524 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-09-25 07:54:18,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:18,536 INFO L225 Difference]: With dead ends: 3154 [2020-09-25 07:54:18,537 INFO L226 Difference]: Without dead ends: 1980 [2020-09-25 07:54:18,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:54:18,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2020-09-25 07:54:18,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1664. [2020-09-25 07:54:18,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1664 states. [2020-09-25 07:54:18,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2030 transitions. [2020-09-25 07:54:18,608 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2030 transitions. Word has length 224 [2020-09-25 07:54:18,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:18,608 INFO L479 AbstractCegarLoop]: Abstraction has 1664 states and 2030 transitions. [2020-09-25 07:54:18,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:54:18,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2030 transitions. [2020-09-25 07:54:18,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 07:54:18,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:18,617 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:18,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:54:18,618 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:18,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:18,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1371325380, now seen corresponding path program 1 times [2020-09-25 07:54:18,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:18,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813496893] [2020-09-25 07:54:18,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:18,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:18,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:19,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:20,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:21,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:23,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:23,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-25 07:54:23,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:54:23,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 07:54:23,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:23,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:23,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:54:23,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:54:23,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 07:54:23,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:54:23,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:23,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:23,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:23,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:23,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:23,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:54:23,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:23,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:23,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:23,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:23,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:54:23,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:54:23,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:54:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:23,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:23,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:23,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 07:54:23,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:23,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 07:54:23,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:23,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:54:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:54:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 07:54:23,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:23,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 07:54:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:23,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:23,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:23,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:54:23,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:23,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:54:23,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:23,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:23,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:54:23,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:54:23,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:54:23,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:24,038 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 07:54:24,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813496893] [2020-09-25 07:54:24,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:54:24,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:54:24,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041164262] [2020-09-25 07:54:24,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:54:24,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:24,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:54:24,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:54:24,042 INFO L87 Difference]: Start difference. First operand 1664 states and 2030 transitions. Second operand 7 states. [2020-09-25 07:54:26,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:26,204 INFO L93 Difference]: Finished difference Result 4134 states and 5133 transitions. [2020-09-25 07:54:26,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:54:26,208 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-09-25 07:54:26,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:26,222 INFO L225 Difference]: With dead ends: 4134 [2020-09-25 07:54:26,222 INFO L226 Difference]: Without dead ends: 2492 [2020-09-25 07:54:26,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:54:26,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2020-09-25 07:54:26,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 2437. [2020-09-25 07:54:26,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2437 states. [2020-09-25 07:54:26,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 2877 transitions. [2020-09-25 07:54:26,329 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 2877 transitions. Word has length 232 [2020-09-25 07:54:26,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:26,329 INFO L479 AbstractCegarLoop]: Abstraction has 2437 states and 2877 transitions. [2020-09-25 07:54:26,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:54:26,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 2877 transitions. [2020-09-25 07:54:26,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 07:54:26,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:26,343 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:54:26,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:54:26,343 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:26,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:26,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1765686849, now seen corresponding path program 1 times [2020-09-25 07:54:26,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:26,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486870145] [2020-09-25 07:54:26,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:26,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:26,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:26,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:26,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:28,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:28,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:29,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:29,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:29,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:30,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:30,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:30,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:30,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking...