/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:10:44,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:10:44,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:10:44,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:10:44,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:10:44,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:10:44,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:10:44,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:10:44,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:10:44,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:10:44,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:10:44,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:10:44,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:10:44,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:10:44,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:10:44,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:10:44,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:10:44,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:10:44,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:10:44,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:10:44,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:10:44,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:10:44,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:10:44,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:10:44,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:10:44,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:10:44,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:10:44,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:10:44,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:10:44,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:10:44,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:10:44,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:10:44,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:10:44,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:10:44,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:10:44,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:10:44,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:10:44,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:10:44,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:10:44,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:10:44,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:10:44,954 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:10:44,981 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:10:44,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:10:44,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:10:44,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:10:44,983 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:10:44,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:10:44,984 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:10:44,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:10:44,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:10:44,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:10:44,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:10:44,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:10:44,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:10:44,985 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:10:44,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:10:44,985 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:10:44,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:10:44,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:10:44,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:10:44,986 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:10:44,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:10:44,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:10:44,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:10:44,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:10:44,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:10:44,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:10:44,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:10:44,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:10:44,988 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:10:44,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:10:45,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:10:45,478 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:10:45,483 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:10:45,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:10:45,487 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:10:45,488 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-25 10:10:45,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/289549500/5ea3fca605784ec68060bd7e381b1a21/FLAG3f1cabba7 [2020-09-25 10:10:46,281 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:10:46,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-25 10:10:46,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/289549500/5ea3fca605784ec68060bd7e381b1a21/FLAG3f1cabba7 [2020-09-25 10:10:46,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/289549500/5ea3fca605784ec68060bd7e381b1a21 [2020-09-25 10:10:46,489 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:10:46,496 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:10:46,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:46,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:10:46,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:10:46,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:46" (1/1) ... [2020-09-25 10:10:46,507 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 10:10:46, skipping insertion in model container [2020-09-25 10:10:46,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:46" (1/1) ... [2020-09-25 10:10:46,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:10:46,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:10:47,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:47,093 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:10:47,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:47,384 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:10:47,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:47 WrapperNode [2020-09-25 10:10:47,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:47,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:10:47,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:10:47,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:10:47,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:47" (1/1) ... [2020-09-25 10:10:47,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:47" (1/1) ... [2020-09-25 10:10:47,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:47" (1/1) ... [2020-09-25 10:10:47,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:47" (1/1) ... [2020-09-25 10:10:47,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:47" (1/1) ... [2020-09-25 10:10:47,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:47" (1/1) ... [2020-09-25 10:10:47,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:47" (1/1) ... [2020-09-25 10:10:47,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:10:47,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:10:47,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:10:47,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:10:47,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:10:47,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:10:47,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:10:47,617 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:10:47,617 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:10:47,617 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:10:47,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:10:47,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:10:47,618 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:10:47,618 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:10:47,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:10:47,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:10:48,956 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:10:48,957 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:10:48,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:48 BoogieIcfgContainer [2020-09-25 10:10:48,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:10:48,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:10:48,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:10:48,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:10:48,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:10:46" (1/3) ... [2020-09-25 10:10:48,979 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 10:10:48, skipping insertion in model container [2020-09-25 10:10:48,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:47" (2/3) ... [2020-09-25 10:10:48,980 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 10:10:48, skipping insertion in model container [2020-09-25 10:10:48,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:48" (3/3) ... [2020-09-25 10:10:48,983 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label55.c [2020-09-25 10:10:48,996 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:10:49,012 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:10:49,036 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:10:49,082 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:10:49,083 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:10:49,084 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:10:49,084 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:10:49,084 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:10:49,084 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:10:49,084 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:10:49,084 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:10:49,118 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:10:49,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 10:10:49,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:49,141 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] [2020-09-25 10:10:49,141 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:49,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:49,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1120036286, now seen corresponding path program 1 times [2020-09-25 10:10:49,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:49,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11241220] [2020-09-25 10:10:49,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:49,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:49,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:49,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:49,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:51,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:52,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:53,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:53,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:54,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:54,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:54,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:54,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 10:10:54,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:10:54,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 10:10:54,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:54,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:54,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:54,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:10:54,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 10:10:54,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:10:54,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:54,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:54,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:54,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:54,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:54,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:10:54,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:54,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:54,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:54,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:54,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:10:54,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:54,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:54,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11241220] [2020-09-25 10:10:54,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:10:54,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:10:54,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780310837] [2020-09-25 10:10:54,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:10:54,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:54,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:10:54,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:10:54,898 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:10:57,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:57,188 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-25 10:10:57,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:10:57,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-09-25 10:10:57,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:57,216 INFO L225 Difference]: With dead ends: 1248 [2020-09-25 10:10:57,216 INFO L226 Difference]: Without dead ends: 670 [2020-09-25 10:10:57,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:10:57,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-25 10:10:57,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-25 10:10:57,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 10:10:57,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 10:10:57,334 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 131 [2020-09-25 10:10:57,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:57,335 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 10:10:57,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:10:57,335 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 10:10:57,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 10:10:57,345 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:57,345 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, 1, 1, 1, 1] [2020-09-25 10:10:57,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:10:57,346 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:57,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:57,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1482091497, now seen corresponding path program 1 times [2020-09-25 10:10:57,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:57,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221939699] [2020-09-25 10:10:57,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:57,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:57,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:57,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:58,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:59,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:00,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:00,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:00,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:02,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:02,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 10:11:02,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:11:02,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:11:02,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:02,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:02,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:11:02,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:11:02,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 10:11:02,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:02,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:02,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:02,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:02,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:02,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:02,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:11:02,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:02,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:02,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:02,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:02,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:11:02,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:02,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:02,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:02,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:02,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:02,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:11:02,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:02,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 10:11:02,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:02,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:02,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:02,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:02,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:11:02,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:11:02,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221939699] [2020-09-25 10:11:02,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:02,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:11:02,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033162251] [2020-09-25 10:11:02,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:11:02,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:02,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:11:02,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:11:02,773 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 6 states. [2020-09-25 10:11:04,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:04,706 INFO L93 Difference]: Finished difference Result 1537 states and 1854 transitions. [2020-09-25 10:11:04,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:11:04,707 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2020-09-25 10:11:04,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:04,716 INFO L225 Difference]: With dead ends: 1537 [2020-09-25 10:11:04,716 INFO L226 Difference]: Without dead ends: 938 [2020-09-25 10:11:04,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:11:04,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2020-09-25 10:11:04,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 928. [2020-09-25 10:11:04,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 928 states. [2020-09-25 10:11:04,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1099 transitions. [2020-09-25 10:11:04,773 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1099 transitions. Word has length 148 [2020-09-25 10:11:04,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:04,774 INFO L479 AbstractCegarLoop]: Abstraction has 928 states and 1099 transitions. [2020-09-25 10:11:04,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:11:04,774 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1099 transitions. [2020-09-25 10:11:04,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 10:11:04,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:04,780 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:11:04,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:11:04,781 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:04,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:04,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1449392167, now seen corresponding path program 1 times [2020-09-25 10:11:04,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:04,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023746091] [2020-09-25 10:11:04,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:04,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:04,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:05,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:07,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:07,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:07,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:08,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:09,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:09,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:09,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 10:11:09,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:11:09,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 10:11:09,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:09,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:09,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:11:09,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:11:09,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 10:11:09,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:10,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:10,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:10,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:10,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:10,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:10,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:11:10,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:10,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:10,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:10,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:10,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:11:10,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:10,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:10,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:10,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:10,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:10,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:11:10,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:10,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 10:11:10,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:10,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:10,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:11:10,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:10,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 10:11:10,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:11,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023746091] [2020-09-25 10:11:11,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:11,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 10:11:11,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113124551] [2020-09-25 10:11:11,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 10:11:11,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:11,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 10:11:11,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:11:11,074 INFO L87 Difference]: Start difference. First operand 928 states and 1099 transitions. Second operand 17 states. [2020-09-25 10:11:13,607 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-09-25 10:11:15,386 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-09-25 10:11:15,643 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-09-25 10:11:16,027 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2020-09-25 10:11:16,413 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2020-09-25 10:11:16,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:16,907 INFO L93 Difference]: Finished difference Result 2762 states and 3483 transitions. [2020-09-25 10:11:16,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 10:11:16,908 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 166 [2020-09-25 10:11:16,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:16,919 INFO L225 Difference]: With dead ends: 2762 [2020-09-25 10:11:16,920 INFO L226 Difference]: Without dead ends: 1856 [2020-09-25 10:11:16,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=283, Invalid=587, Unknown=0, NotChecked=0, Total=870 [2020-09-25 10:11:16,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2020-09-25 10:11:16,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1801. [2020-09-25 10:11:16,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1801 states. [2020-09-25 10:11:16,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2148 transitions. [2020-09-25 10:11:16,992 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2148 transitions. Word has length 166 [2020-09-25 10:11:16,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:16,993 INFO L479 AbstractCegarLoop]: Abstraction has 1801 states and 2148 transitions. [2020-09-25 10:11:16,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 10:11:16,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2148 transitions. [2020-09-25 10:11:17,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 10:11:17,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:17,000 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:11:17,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:11:17,001 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:17,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:17,001 INFO L82 PathProgramCache]: Analyzing trace with hash -2071725682, now seen corresponding path program 1 times [2020-09-25 10:11:17,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:17,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609840207] [2020-09-25 10:11:17,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:17,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:17,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:17,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:17,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:18,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:18,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:22,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 10:11:22,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:11:22,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 10:11:22,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:22,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:22,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:11:22,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:11:22,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 10:11:22,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:22,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:22,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:22,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:22,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:11:22,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:22,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:22,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:22,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:22,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:11:22,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:11:22,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:22,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:22,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:11:22,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:22,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:11:22,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:22,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:11:22,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:22,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:11:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:22,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:22,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:11:22,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:22,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 10:11:22,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:22,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:22,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:11:22,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:22,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:11:22,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:23,033 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 10:11:23,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609840207] [2020-09-25 10:11:23,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:23,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:11:23,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377168686] [2020-09-25 10:11:23,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:11:23,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:23,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:11:23,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:11:23,038 INFO L87 Difference]: Start difference. First operand 1801 states and 2148 transitions. Second operand 11 states. [2020-09-25 10:11:26,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:26,500 INFO L93 Difference]: Finished difference Result 3184 states and 3874 transitions. [2020-09-25 10:11:26,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:11:26,501 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 182 [2020-09-25 10:11:26,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:26,505 INFO L225 Difference]: With dead ends: 3184 [2020-09-25 10:11:26,506 INFO L226 Difference]: Without dead ends: 806 [2020-09-25 10:11:26,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:11:26,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-25 10:11:26,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 796. [2020-09-25 10:11:26,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-09-25 10:11:26,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 868 transitions. [2020-09-25 10:11:26,536 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 868 transitions. Word has length 182 [2020-09-25 10:11:26,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:26,537 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 868 transitions. [2020-09-25 10:11:26,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:11:26,537 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 868 transitions. [2020-09-25 10:11:26,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 10:11:26,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:26,541 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:11:26,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:11:26,542 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:26,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:26,542 INFO L82 PathProgramCache]: Analyzing trace with hash 859928534, now seen corresponding path program 1 times [2020-09-25 10:11:26,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:26,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024951621] [2020-09-25 10:11:26,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:26,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:26,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:27,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:27,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:27,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:31,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:31,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:31,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:31,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 10:11:31,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:11:31,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 10:11:31,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:31,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:31,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 10:11:31,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:11:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 10:11:31,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:32,099 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-09-25 10:11:32,236 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-09-25 10:11:32,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:32,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:32,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:32,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:32,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:32,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 10:11:32,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:32,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:32,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:32,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:32,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:11:32,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:32,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:32,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:32,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:32,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:11:32,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:32,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 10:11:32,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:32,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:32,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:32,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:32,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:11:32,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:32,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:11:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:32,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:32,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:33,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:33,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:11:33,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:33,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 10:11:33,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:33,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:33,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:33,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:33,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 10:11:33,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:33,260 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 17 proven. 37 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 10:11:33,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024951621] [2020-09-25 10:11:33,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:33,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 10:11:33,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111556523] [2020-09-25 10:11:33,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 10:11:33,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:33,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 10:11:33,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:11:33,262 INFO L87 Difference]: Start difference. First operand 796 states and 868 transitions. Second operand 19 states.