/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=0.5 --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/Problem14_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:43:21,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:43:21,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:43:21,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:43:21,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:43:21,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:43:21,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:43:21,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:43:21,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:43:21,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:43:21,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:43:21,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:43:21,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:43:21,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:43:21,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:43:21,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:43:21,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:43:21,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:43:21,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:43:21,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:43:21,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:43:21,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:43:21,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:43:21,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:43:21,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:43:21,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:43:21,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:43:21,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:43:21,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:43:21,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:43:21,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:43:21,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:43:21,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:43:21,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:43:21,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:43:21,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:43:21,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:43:21,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:43:21,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:43:21,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:43:22,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:43:22,002 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 14:43:22,055 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:43:22,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:43:22,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:43:22,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:43:22,059 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:43:22,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:43:22,060 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:43:22,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:43:22,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:43:22,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:43:22,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:43:22,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:43:22,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:43:22,062 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:43:22,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:43:22,063 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:43:22,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:43:22,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:43:22,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:43:22,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:43:22,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:43:22,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:43:22,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:43:22,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:43:22,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:43:22,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:43:22,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:43:22,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:43:22,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:43:22,066 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:43:22,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:43:22,555 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:43:22,560 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:43:22,562 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:43:22,562 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:43:22,564 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-25 14:43:22,644 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b95f83b9b/8ec3896bdc0a46fd862624c0c6da8546/FLAG4aad2736a [2020-09-25 14:43:23,283 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:43:23,284 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-25 14:43:23,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b95f83b9b/8ec3896bdc0a46fd862624c0c6da8546/FLAG4aad2736a [2020-09-25 14:43:23,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b95f83b9b/8ec3896bdc0a46fd862624c0c6da8546 [2020-09-25 14:43:23,507 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:43:23,513 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:43:23,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:23,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:43:23,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:43:23,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:23" (1/1) ... [2020-09-25 14:43:23,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d48d131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:23, skipping insertion in model container [2020-09-25 14:43:23,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:23" (1/1) ... [2020-09-25 14:43:23,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:43:23,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:43:24,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:24,081 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:43:24,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:24,351 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:43:24,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:24 WrapperNode [2020-09-25 14:43:24,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:24,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:43:24,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:43:24,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:43:24,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:24" (1/1) ... [2020-09-25 14:43:24,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:24" (1/1) ... [2020-09-25 14:43:24,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:24" (1/1) ... [2020-09-25 14:43:24,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:24" (1/1) ... [2020-09-25 14:43:24,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:24" (1/1) ... [2020-09-25 14:43:24,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:24" (1/1) ... [2020-09-25 14:43:24,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:24" (1/1) ... [2020-09-25 14:43:24,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:43:24,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:43:24,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:43:24,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:43:24,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:24" (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 14:43:24,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:43:24,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:43:24,669 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:43:24,669 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:43:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:43:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:43:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:43:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:43:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:43:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:43:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:43:26,759 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:43:26,759 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:43:26,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:26 BoogieIcfgContainer [2020-09-25 14:43:26,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:43:26,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:43:26,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:43:26,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:43:26,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:43:23" (1/3) ... [2020-09-25 14:43:26,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6baadc76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:26, skipping insertion in model container [2020-09-25 14:43:26,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:24" (2/3) ... [2020-09-25 14:43:26,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6baadc76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:26, skipping insertion in model container [2020-09-25 14:43:26,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:26" (3/3) ... [2020-09-25 14:43:26,780 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label21.c [2020-09-25 14:43:26,792 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:43:26,804 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:43:26,827 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:43:26,863 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:43:26,864 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:43:26,864 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:43:26,864 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:43:26,864 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:43:26,864 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:43:26,864 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:43:26,865 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:43:26,899 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 14:43:26,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 14:43:26,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:26,911 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] [2020-09-25 14:43:26,912 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:26,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:26,920 INFO L82 PathProgramCache]: Analyzing trace with hash -2130690894, now seen corresponding path program 1 times [2020-09-25 14:43:26,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:26,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697095985] [2020-09-25 14:43:26,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:27,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:27,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:27,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:27,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 14:43:27,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:43:27,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 619 [2020-09-25 14:43:27,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:27,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:27,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:27,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:43:27,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 14:43:27,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:43:27,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:27,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:27,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:27,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:27,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:27,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:43:27,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:27,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:27,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:27,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:27,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:43:27,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:27,937 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 14:43:27,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697095985] [2020-09-25 14:43:27,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:27,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:43:27,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692539021] [2020-09-25 14:43:27,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:43:27,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:27,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:43:27,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:43:27,973 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-25 14:43:31,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:31,823 INFO L93 Difference]: Finished difference Result 1766 states and 2493 transitions. [2020-09-25 14:43:31,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:43:31,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-09-25 14:43:31,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:31,854 INFO L225 Difference]: With dead ends: 1766 [2020-09-25 14:43:31,854 INFO L226 Difference]: Without dead ends: 1025 [2020-09-25 14:43:31,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:31,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-09-25 14:43:31,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 995. [2020-09-25 14:43:31,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-09-25 14:43:31,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1343 transitions. [2020-09-25 14:43:31,996 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1343 transitions. Word has length 53 [2020-09-25 14:43:31,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:31,996 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1343 transitions. [2020-09-25 14:43:31,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:43:31,997 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1343 transitions. [2020-09-25 14:43:32,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 14:43:32,006 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:32,006 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:32,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:43:32,007 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:32,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:32,007 INFO L82 PathProgramCache]: Analyzing trace with hash -815962305, now seen corresponding path program 1 times [2020-09-25 14:43:32,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:32,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916549693] [2020-09-25 14:43:32,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:32,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:32,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:32,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:32,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:34,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:34,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:37,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:37,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 14:43:37,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:43:37,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 14:43:37,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:37,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:37,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:37,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 14:43:37,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 14:43:37,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:37,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:37,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:37,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:37,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:37,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:37,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:43:37,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:37,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:37,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:37,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:37,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:43:37,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:37,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:37,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:37,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 14:43:37,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:37,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 14:43:37,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:37,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:37,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:37,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:37,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 14:43:37,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:37,414 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:37,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916549693] [2020-09-25 14:43:37,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:37,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:43:37,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293472283] [2020-09-25 14:43:37,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:43:37,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:37,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:43:37,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:43:37,420 INFO L87 Difference]: Start difference. First operand 995 states and 1343 transitions. Second operand 5 states. [2020-09-25 14:43:39,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:39,967 INFO L93 Difference]: Finished difference Result 2640 states and 3731 transitions. [2020-09-25 14:43:39,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:43:39,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-25 14:43:39,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:39,981 INFO L225 Difference]: With dead ends: 2640 [2020-09-25 14:43:39,981 INFO L226 Difference]: Without dead ends: 1660 [2020-09-25 14:43:39,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 14:43:39,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2020-09-25 14:43:40,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1218. [2020-09-25 14:43:40,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1218 states. [2020-09-25 14:43:40,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1650 transitions. [2020-09-25 14:43:40,048 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1650 transitions. Word has length 137 [2020-09-25 14:43:40,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:40,049 INFO L479 AbstractCegarLoop]: Abstraction has 1218 states and 1650 transitions. [2020-09-25 14:43:40,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:43:40,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1650 transitions. [2020-09-25 14:43:40,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 14:43:40,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:40,054 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:40,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:43:40,055 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:40,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:40,055 INFO L82 PathProgramCache]: Analyzing trace with hash -738903594, now seen corresponding path program 1 times [2020-09-25 14:43:40,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:40,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143255290] [2020-09-25 14:43:40,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:40,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:40,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:40,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:40,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:41,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:41,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:42,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:44,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:44,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 14:43:44,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:43:44,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4327 [2020-09-25 14:43:44,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:44,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:44,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:44,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:43:44,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 14:43:44,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:43:44,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:44,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:44,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:44,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:44,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:44,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:43:44,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:44,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:44,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:44,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:43:44,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:44,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:44,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:44,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:44,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:43:44,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:44,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-25 14:43:44,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:44,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:44,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:44,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:44,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:43:44,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:44,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143255290] [2020-09-25 14:43:44,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:44,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:44,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224787767] [2020-09-25 14:43:44,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:44,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:44,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:44,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:44,869 INFO L87 Difference]: Start difference. First operand 1218 states and 1650 transitions. Second operand 7 states. [2020-09-25 14:43:48,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:48,511 INFO L93 Difference]: Finished difference Result 3289 states and 4703 transitions. [2020-09-25 14:43:48,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:48,511 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-09-25 14:43:48,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:48,534 INFO L225 Difference]: With dead ends: 3289 [2020-09-25 14:43:48,534 INFO L226 Difference]: Without dead ends: 2086 [2020-09-25 14:43:48,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:43:48,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2020-09-25 14:43:48,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 1532. [2020-09-25 14:43:48,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1532 states. [2020-09-25 14:43:48,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 1968 transitions. [2020-09-25 14:43:48,621 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 1968 transitions. Word has length 142 [2020-09-25 14:43:48,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:48,625 INFO L479 AbstractCegarLoop]: Abstraction has 1532 states and 1968 transitions. [2020-09-25 14:43:48,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:48,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 1968 transitions. [2020-09-25 14:43:48,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 14:43:48,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:48,630 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:48,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:43:48,630 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:48,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:48,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1135519942, now seen corresponding path program 1 times [2020-09-25 14:43:48,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:48,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460362861] [2020-09-25 14:43:48,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:48,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:48,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:49,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:50,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:51,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:52,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:52,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 14:43:52,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:43:52,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3548 [2020-09-25 14:43:52,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:52,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:52,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:52,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:43:52,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 14:43:52,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:52,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:52,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:52,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:52,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:52,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:52,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:43:52,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:52,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:52,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:52,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:52,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:43:52,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:52,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:52,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:52,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:52,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 14:43:52,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:52,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 14:43:52,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:52,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:52,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:52,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:52,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 14:43:52,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:43:52,632 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:52,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460362861] [2020-09-25 14:43:52,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:52,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:52,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172619153] [2020-09-25 14:43:52,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:52,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:52,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:52,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:52,640 INFO L87 Difference]: Start difference. First operand 1532 states and 1968 transitions. Second operand 7 states. [2020-09-25 14:43:56,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:56,146 INFO L93 Difference]: Finished difference Result 3708 states and 5005 transitions. [2020-09-25 14:43:56,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:43:56,147 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 155 [2020-09-25 14:43:56,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:56,163 INFO L225 Difference]: With dead ends: 3708 [2020-09-25 14:43:56,164 INFO L226 Difference]: Without dead ends: 2191 [2020-09-25 14:43:56,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:43:56,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2020-09-25 14:43:56,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 2043. [2020-09-25 14:43:56,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2043 states. [2020-09-25 14:43:56,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 2555 transitions. [2020-09-25 14:43:56,243 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 2555 transitions. Word has length 155 [2020-09-25 14:43:56,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:56,243 INFO L479 AbstractCegarLoop]: Abstraction has 2043 states and 2555 transitions. [2020-09-25 14:43:56,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:56,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 2555 transitions. [2020-09-25 14:43:56,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 14:43:56,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:56,248 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, 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] [2020-09-25 14:43:56,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:43:56,248 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:56,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:56,249 INFO L82 PathProgramCache]: Analyzing trace with hash -595774204, now seen corresponding path program 1 times [2020-09-25 14:43:56,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:56,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542620515] [2020-09-25 14:43:56,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:56,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:56,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:56,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:56,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:56,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:58,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:58,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:58,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:01,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:01,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 14:44:01,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:44:01,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:44:01,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:01,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:01,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:44:01,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 14:44:01,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 14:44:01,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:01,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:44:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:01,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:01,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:01,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:44:01,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:01,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:44:01,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:01,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:01,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:44:01,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:01,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:44:01,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:01,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:44:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:01,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:01,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:01,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:44:01,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:01,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 14:44:01,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:01,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:44:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:01,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:44:01,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:01,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:44:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:01,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:01,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:01,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 14:44:01,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:01,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-25 14:44:01,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:01,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:01,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:44:01,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:44:01,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 14:44:01,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:02,138 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:44:02,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542620515] [2020-09-25 14:44:02,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:44:02,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:44:02,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654813781] [2020-09-25 14:44:02,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:44:02,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:44:02,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:44:02,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:44:02,143 INFO L87 Difference]: Start difference. First operand 2043 states and 2555 transitions. Second operand 7 states. [2020-09-25 14:44:06,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:44:06,383 INFO L93 Difference]: Finished difference Result 3967 states and 5385 transitions. [2020-09-25 14:44:06,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 14:44:06,384 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-09-25 14:44:06,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:44:06,400 INFO L225 Difference]: With dead ends: 3967 [2020-09-25 14:44:06,400 INFO L226 Difference]: Without dead ends: 2428 [2020-09-25 14:44:06,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:44:06,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2020-09-25 14:44:06,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 2266. [2020-09-25 14:44:06,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2266 states. [2020-09-25 14:44:06,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2266 states to 2266 states and 2804 transitions. [2020-09-25 14:44:06,483 INFO L78 Accepts]: Start accepts. Automaton has 2266 states and 2804 transitions. Word has length 226 [2020-09-25 14:44:06,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:44:06,484 INFO L479 AbstractCegarLoop]: Abstraction has 2266 states and 2804 transitions. [2020-09-25 14:44:06,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:44:06,484 INFO L276 IsEmpty]: Start isEmpty. Operand 2266 states and 2804 transitions. [2020-09-25 14:44:06,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 14:44:06,489 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:44:06,489 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, 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, 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] [2020-09-25 14:44:06,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:44:06,490 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:44:06,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:44:06,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1230668312, now seen corresponding path program 1 times [2020-09-25 14:44:06,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:44:06,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220813949] [2020-09-25 14:44:06,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:44:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:06,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:06,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:06,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:06,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:07,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:08,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:09,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:10,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:10,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:11,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:11,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 14:44:11,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:44:11,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 14:44:11,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:11,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:11,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:44:11,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-09-25 14:44:11,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 14:44:11,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:44:11,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:44:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:11,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:11,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:11,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:44:11,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:11,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:44:11,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:11,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:11,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:44:11,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:11,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:44:11,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:11,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:44:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:11,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:11,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:11,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 14:44:11,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:11,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 14:44:11,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:11,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:44:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:44:11,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:11,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 14:44:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:11,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking...