/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=0.3 --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/Problem10_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:26:54,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:26:54,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:26:54,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:26:54,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:26:54,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:26:54,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:26:54,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:26:54,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:26:54,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:26:54,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:26:54,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:26:54,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:26:54,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:26:54,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:26:54,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:26:54,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:26:54,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:26:54,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:26:54,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:26:54,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:26:54,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:26:54,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:26:54,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:26:54,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:26:54,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:26:54,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:26:54,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:26:54,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:26:54,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:26:54,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:26:54,951 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:26:54,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:26:54,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:26:54,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:26:54,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:26:54,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:26:54,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:26:54,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:26:54,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:26:54,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:26:54,959 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 12:26:54,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:26:54,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:26:54,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:26:54,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:26:54,988 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:26:54,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:26:54,988 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:26:54,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:26:54,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:26:54,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:26:54,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:26:54,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:26:54,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:26:54,990 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:26:54,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:26:54,990 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:26:54,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:26:54,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:26:54,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:26:54,991 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:26:54,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:26:54,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:26:54,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:26:54,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:26:54,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:26:54,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:26:54,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:26:54,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:26:54,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:26:54,993 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:26:55,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:26:55,476 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:26:55,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:26:55,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:26:55,487 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:26:55,488 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-25 12:26:55,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8776dbf84/e441c57533764b43ac0d2f997f5bd7ab/FLAG7c1664714 [2020-09-25 12:26:56,284 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:26:56,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-25 12:26:56,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8776dbf84/e441c57533764b43ac0d2f997f5bd7ab/FLAG7c1664714 [2020-09-25 12:26:56,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8776dbf84/e441c57533764b43ac0d2f997f5bd7ab [2020-09-25 12:26:56,522 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:26:56,530 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:26:56,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:56,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:26:56,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:26:56,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:56" (1/1) ... [2020-09-25 12:26:56,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:56, skipping insertion in model container [2020-09-25 12:26:56,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:56" (1/1) ... [2020-09-25 12:26:56,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:26:56,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:26:57,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:57,120 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:26:57,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:57,388 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:26:57,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:57 WrapperNode [2020-09-25 12:26:57,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:57,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:26:57,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:26:57,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:26:57,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:57" (1/1) ... [2020-09-25 12:26:57,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:57" (1/1) ... [2020-09-25 12:26:57,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:57" (1/1) ... [2020-09-25 12:26:57,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:57" (1/1) ... [2020-09-25 12:26:57,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:57" (1/1) ... [2020-09-25 12:26:57,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:57" (1/1) ... [2020-09-25 12:26:57,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:57" (1/1) ... [2020-09-25 12:26:57,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:26:57,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:26:57,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:26:57,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:26:57,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:57" (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 12:26:57,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:26:57,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:26:57,653 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:26:57,654 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:26:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:26:57,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:26:57,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:26:57,657 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:26:57,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:26:57,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:26:57,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:26:59,167 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:26:59,167 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:26:59,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:59 BoogieIcfgContainer [2020-09-25 12:26:59,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:26:59,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:26:59,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:26:59,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:26:59,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:26:56" (1/3) ... [2020-09-25 12:26:59,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:59, skipping insertion in model container [2020-09-25 12:26:59,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:57" (2/3) ... [2020-09-25 12:26:59,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:59, skipping insertion in model container [2020-09-25 12:26:59,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:59" (3/3) ... [2020-09-25 12:26:59,193 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label33.c [2020-09-25 12:26:59,204 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:26:59,216 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:26:59,239 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:26:59,273 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:26:59,274 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:26:59,274 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:26:59,274 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:26:59,274 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:26:59,275 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:26:59,275 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:26:59,275 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:26:59,308 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:26:59,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 12:26:59,320 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:59,321 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] [2020-09-25 12:26:59,322 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:59,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:59,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1274135065, now seen corresponding path program 1 times [2020-09-25 12:26:59,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:59,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001699951] [2020-09-25 12:26:59,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:59,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:59,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:59,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:01,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:01,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 12:27:01,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:27:01,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1521 [2020-09-25 12:27:01,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:01,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:01,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:01,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:27:01,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 12:27:01,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:27:01,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:01,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:01,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:01,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:01,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:01,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:27:01,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:01,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:01,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:01,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:01,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:27:01,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:01,300 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 12:27:01,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001699951] [2020-09-25 12:27:01,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:01,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:27:01,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015066928] [2020-09-25 12:27:01,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:27:01,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:01,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:27:01,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:27:01,339 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 12:27:03,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:03,370 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 12:27:03,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:27:03,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-09-25 12:27:03,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:03,397 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 12:27:03,397 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 12:27:03,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:27:03,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 12:27:03,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 12:27:03,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 12:27:03,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 12:27:03,502 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 63 [2020-09-25 12:27:03,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:03,502 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 12:27:03,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:27:03,503 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 12:27:03,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 12:27:03,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:03,511 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:27:03,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:27:03,512 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:03,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:03,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1742825944, now seen corresponding path program 1 times [2020-09-25 12:27:03,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:03,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270453856] [2020-09-25 12:27:03,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:03,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:03,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:03,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:03,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:04,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:04,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:04,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:08,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:08,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 12:27:08,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:27:08,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:27:08,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:08,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:08,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:27:08,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:27:08,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 12:27:08,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:08,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:08,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:08,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:08,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:08,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:08,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:27:08,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:08,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:08,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:08,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:08,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:27:08,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:08,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:08,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:08,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:08,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:08,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:27:08,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:08,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 12:27:08,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:08,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:08,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:08,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:08,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:27:08,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:09,006 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:27:09,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270453856] [2020-09-25 12:27:09,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:09,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:27:09,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680170695] [2020-09-25 12:27:09,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:27:09,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:09,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:27:09,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:27:09,010 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-25 12:27:10,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:10,725 INFO L93 Difference]: Finished difference Result 861 states and 1069 transitions. [2020-09-25 12:27:10,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:27:10,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 12:27:10,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:10,732 INFO L225 Difference]: With dead ends: 861 [2020-09-25 12:27:10,733 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 12:27:10,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:27:10,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 12:27:10,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 697. [2020-09-25 12:27:10,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-25 12:27:10,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 874 transitions. [2020-09-25 12:27:10,780 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 874 transitions. Word has length 142 [2020-09-25 12:27:10,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:10,781 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 874 transitions. [2020-09-25 12:27:10,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:27:10,781 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 874 transitions. [2020-09-25 12:27:10,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 12:27:10,787 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:10,787 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:27:10,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:27:10,788 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:10,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:10,788 INFO L82 PathProgramCache]: Analyzing trace with hash 821407407, now seen corresponding path program 1 times [2020-09-25 12:27:10,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:10,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046924936] [2020-09-25 12:27:10,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:10,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:10,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:11,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:11,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:11,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:12,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:12,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:12,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:12,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:15,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:15,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 12:27:15,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:27:15,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 12:27:15,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:15,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:15,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:15,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:27:15,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:27:15,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:15,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:15,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:15,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:15,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:15,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:15,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:27:15,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:15,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:15,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:15,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:15,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:27:15,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:15,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:15,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:16,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:16,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:27:16,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:16,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 12:27:16,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:16,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:16,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:16,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:16,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:27:16,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:16,235 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:16,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046924936] [2020-09-25 12:27:16,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:16,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:27:16,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427412292] [2020-09-25 12:27:16,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:27:16,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:16,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:27:16,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:27:16,239 INFO L87 Difference]: Start difference. First operand 697 states and 874 transitions. Second operand 7 states. [2020-09-25 12:27:18,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:18,623 INFO L93 Difference]: Finished difference Result 1825 states and 2439 transitions. [2020-09-25 12:27:18,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:27:18,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-09-25 12:27:18,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:18,635 INFO L225 Difference]: With dead ends: 1825 [2020-09-25 12:27:18,636 INFO L226 Difference]: Without dead ends: 1143 [2020-09-25 12:27:18,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:27:18,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2020-09-25 12:27:18,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1011. [2020-09-25 12:27:18,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-09-25 12:27:18,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1270 transitions. [2020-09-25 12:27:18,694 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1270 transitions. Word has length 146 [2020-09-25 12:27:18,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:18,695 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1270 transitions. [2020-09-25 12:27:18,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:27:18,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1270 transitions. [2020-09-25 12:27:18,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 12:27:18,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:18,700 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:27:18,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:27:18,701 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:18,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:18,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1962223494, now seen corresponding path program 1 times [2020-09-25 12:27:18,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:18,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462228811] [2020-09-25 12:27:18,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:18,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:18,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:18,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:19,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:20,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:20,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:20,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:20,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:23,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:23,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 12:27:23,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:27:23,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 12:27:23,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:23,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:23,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:23,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:23,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 12:27:23,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:23,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:23,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:23,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:23,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:23,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:23,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:27:23,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:23,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:23,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:23,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:23,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:23,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:23,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:23,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:23,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:23,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:23,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:23,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 12:27:23,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:23,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:27:24,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:24,089 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 7 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:24,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462228811] [2020-09-25 12:27:24,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:24,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:27:24,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322570923] [2020-09-25 12:27:24,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:27:24,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:24,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:27:24,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:27:24,092 INFO L87 Difference]: Start difference. First operand 1011 states and 1270 transitions. Second operand 8 states. [2020-09-25 12:27:27,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:27,700 INFO L93 Difference]: Finished difference Result 3580 states and 4812 transitions. [2020-09-25 12:27:27,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:27:27,700 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 152 [2020-09-25 12:27:27,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:27,718 INFO L225 Difference]: With dead ends: 3580 [2020-09-25 12:27:27,718 INFO L226 Difference]: Without dead ends: 2584 [2020-09-25 12:27:27,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:27:27,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2020-09-25 12:27:27,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 2307. [2020-09-25 12:27:27,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2307 states. [2020-09-25 12:27:27,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 2990 transitions. [2020-09-25 12:27:27,829 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 2990 transitions. Word has length 152 [2020-09-25 12:27:27,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:27,831 INFO L479 AbstractCegarLoop]: Abstraction has 2307 states and 2990 transitions. [2020-09-25 12:27:27,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:27:27,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 2990 transitions. [2020-09-25 12:27:27,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-25 12:27:27,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:27,838 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 12:27:27,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:27:27,839 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:27,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:27,839 INFO L82 PathProgramCache]: Analyzing trace with hash -249277015, now seen corresponding path program 1 times [2020-09-25 12:27:27,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:27,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808597698] [2020-09-25 12:27:27,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:27,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:27,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:28,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:28,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:28,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:32,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:32,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-25 12:27:32,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:27:32,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:27:32,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:32,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:32,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:32,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:32,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 12:27:32,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:32,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:32,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:33,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:33,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:33,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:33,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:27:33,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:33,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:33,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:33,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:33,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:33,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:33,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:33,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:33,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:33,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:27:33,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:33,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 12:27:33,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:33,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:33,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:33,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:33,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:27:33,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:33,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:27:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:33,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:33,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:33,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:33,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:33,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 12:27:33,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:33,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:33,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:33,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:33,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:27:33,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:33,554 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:27:33,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808597698] [2020-09-25 12:27:33,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:33,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:27:33,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421817916] [2020-09-25 12:27:33,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:27:33,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:33,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:27:33,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:27:33,559 INFO L87 Difference]: Start difference. First operand 2307 states and 2990 transitions. Second operand 10 states. [2020-09-25 12:27:37,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:37,282 INFO L93 Difference]: Finished difference Result 6379 states and 9229 transitions. [2020-09-25 12:27:37,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 12:27:37,283 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 231 [2020-09-25 12:27:37,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:37,315 INFO L225 Difference]: With dead ends: 6379 [2020-09-25 12:27:37,315 INFO L226 Difference]: Without dead ends: 4087 [2020-09-25 12:27:37,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:27:37,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4087 states. [2020-09-25 12:27:37,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4087 to 3484. [2020-09-25 12:27:37,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3484 states. [2020-09-25 12:27:37,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3484 states to 3484 states and 4577 transitions. [2020-09-25 12:27:37,478 INFO L78 Accepts]: Start accepts. Automaton has 3484 states and 4577 transitions. Word has length 231 [2020-09-25 12:27:37,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:37,479 INFO L479 AbstractCegarLoop]: Abstraction has 3484 states and 4577 transitions. [2020-09-25 12:27:37,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:27:37,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3484 states and 4577 transitions. [2020-09-25 12:27:37,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 12:27:37,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:37,486 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 12:27:37,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:27:37,487 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:37,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:37,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1994523964, now seen corresponding path program 1 times [2020-09-25 12:27:37,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:37,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858942290] [2020-09-25 12:27:37,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:37,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:37,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:38,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:38,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:38,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:38,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:39,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:39,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:40,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:40,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:40,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:42,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:42,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-25 12:27:42,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 12:27:42,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 12:27:42,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:42,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:42,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:27:42,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:27:42,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 12:27:42,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1