/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:10:39,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:10:39,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:10:39,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:10:39,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:10:39,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:10:39,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:10:39,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:10:39,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:10:39,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:10:39,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:10:39,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:10:39,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:10:39,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:10:39,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:10:39,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:10:39,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:10:39,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:10:39,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:10:39,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:10:39,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:10:39,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:10:39,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:10:39,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:10:39,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:10:39,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:10:39,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:10:39,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:10:39,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:10:39,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:10:39,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:10:39,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:10:39,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:10:39,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:10:39,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:10:39,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:10:39,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:10:39,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:10:39,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:10:39,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:10:39,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:10:39,959 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 10:10:39,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:10:39,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:10:39,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:10:39,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:10:39,988 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:10:39,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:10:39,989 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:10:39,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:10:39,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:10:39,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:10:39,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:10:39,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:10:39,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:10:39,990 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:10:39,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:10:39,991 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:10:39,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:10:39,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:10:39,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:10:39,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:10:39,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:10:39,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:10:39,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:10:39,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:10:39,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:10:39,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:10:39,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:10:39,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:10:39,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:10:39,994 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:10:40,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:10:40,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:10:40,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:10:40,473 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:10:40,475 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:10:40,476 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-25 10:10:40,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9de9f1fa2/1e1012ea78234305a9406fc0f3fa77af/FLAGea90d68f0 [2020-09-25 10:10:41,229 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:10:41,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-25 10:10:41,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9de9f1fa2/1e1012ea78234305a9406fc0f3fa77af/FLAGea90d68f0 [2020-09-25 10:10:41,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9de9f1fa2/1e1012ea78234305a9406fc0f3fa77af [2020-09-25 10:10:41,502 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:10:41,509 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:10:41,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:41,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:10:41,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:10:41,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:41" (1/1) ... [2020-09-25 10:10:41,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bafea5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:41, skipping insertion in model container [2020-09-25 10:10:41,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:41" (1/1) ... [2020-09-25 10:10:41,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:10:41,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:10:42,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:42,043 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:10:42,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:42,297 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:10:42,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:42 WrapperNode [2020-09-25 10:10:42,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:42,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:10:42,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:10:42,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:10:42,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:42" (1/1) ... [2020-09-25 10:10:42,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:42" (1/1) ... [2020-09-25 10:10:42,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:42" (1/1) ... [2020-09-25 10:10:42,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:42" (1/1) ... [2020-09-25 10:10:42,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:42" (1/1) ... [2020-09-25 10:10:42,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:42" (1/1) ... [2020-09-25 10:10:42,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:42" (1/1) ... [2020-09-25 10:10:42,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:10:42,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:10:42,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:10:42,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:10:42,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:10:42,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:10:42,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:10:42,560 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:10:42,560 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:10:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:10:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:10:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:10:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:10:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:10:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:10:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:10:43,938 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:10:43,939 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:10:43,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:43 BoogieIcfgContainer [2020-09-25 10:10:43,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:10:43,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:10:43,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:10:43,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:10:43,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:10:41" (1/3) ... [2020-09-25 10:10:43,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c9b1c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:43, skipping insertion in model container [2020-09-25 10:10:43,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:42" (2/3) ... [2020-09-25 10:10:43,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c9b1c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:43, skipping insertion in model container [2020-09-25 10:10:43,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:43" (3/3) ... [2020-09-25 10:10:43,959 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label54.c [2020-09-25 10:10:43,971 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:10:43,983 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:10:44,008 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:10:44,045 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:10:44,045 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:10:44,045 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:10:44,045 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:10:44,046 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:10:44,046 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:10:44,046 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:10:44,046 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:10:44,081 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:10:44,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 10:10:44,103 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:44,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:44,105 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:44,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:44,113 INFO L82 PathProgramCache]: Analyzing trace with hash 79338610, now seen corresponding path program 1 times [2020-09-25 10:10:44,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:44,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214321322] [2020-09-25 10:10:44,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:44,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:44,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:44,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:45,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:45,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:46,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:47,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:48,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:49,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:49,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 10:10:49,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:10:49,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 10:10:49,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:49,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:49,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:10:49,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 10:10:49,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:10:49,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:49,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:49,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:49,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:49,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:49,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:10:49,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:49,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:49,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:49,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:49,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:10:49,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:49,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:49,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214321322] [2020-09-25 10:10:49,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:10:49,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:10:49,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62470122] [2020-09-25 10:10:49,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:10:49,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:49,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:10:49,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:10:49,742 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 10:10:52,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:52,213 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-25 10:10:52,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:10:52,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-09-25 10:10:52,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:52,241 INFO L225 Difference]: With dead ends: 1248 [2020-09-25 10:10:52,241 INFO L226 Difference]: Without dead ends: 670 [2020-09-25 10:10:52,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:10:52,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-25 10:10:52,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-25 10:10:52,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 10:10:52,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 10:10:52,368 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 127 [2020-09-25 10:10:52,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:52,369 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 10:10:52,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:10:52,370 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 10:10:52,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 10:10:52,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:52,379 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:52,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:10:52,380 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:52,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:52,381 INFO L82 PathProgramCache]: Analyzing trace with hash -15410791, now seen corresponding path program 1 times [2020-09-25 10:10:52,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:52,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994393927] [2020-09-25 10:10:52,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:52,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:52,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:52,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:52,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:54,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:55,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:56,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:56,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:57,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:57,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 10:10:57,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:10:57,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 10:10:57,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:57,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:57,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:10:57,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:10:57,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 10:10:57,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:57,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:57,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:57,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:57,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:57,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:57,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:10:57,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:57,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:57,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:57,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:57,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:10:57,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:57,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:57,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:57,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:57,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:10:57,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:57,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 10:10:57,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:57,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:57,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:57,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:57,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:10:57,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:57,720 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:10:57,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994393927] [2020-09-25 10:10:57,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:57,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:10:57,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271612724] [2020-09-25 10:10:57,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:10:57,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:57,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:10:57,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:10:57,728 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 6 states. [2020-09-25 10:10:59,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:59,543 INFO L93 Difference]: Finished difference Result 1724 states and 2056 transitions. [2020-09-25 10:10:59,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:10:59,544 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2020-09-25 10:10:59,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:59,553 INFO L225 Difference]: With dead ends: 1724 [2020-09-25 10:10:59,553 INFO L226 Difference]: Without dead ends: 1125 [2020-09-25 10:10:59,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:10:59,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-09-25 10:10:59,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1051. [2020-09-25 10:10:59,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2020-09-25 10:10:59,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1236 transitions. [2020-09-25 10:10:59,609 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1236 transitions. Word has length 144 [2020-09-25 10:10:59,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:59,610 INFO L479 AbstractCegarLoop]: Abstraction has 1051 states and 1236 transitions. [2020-09-25 10:10:59,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:10:59,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1236 transitions. [2020-09-25 10:10:59,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 10:10:59,616 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:59,616 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:59,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:10:59,617 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:59,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:59,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1717741829, now seen corresponding path program 1 times [2020-09-25 10:10:59,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:59,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307043484] [2020-09-25 10:10:59,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:59,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:59,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:59,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:01,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:01,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:01,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:01,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:04,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:04,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 10:11:04,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:11:04,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:11:04,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:04,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:04,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:11:04,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:11:04,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 10:11:04,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:04,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:04,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:04,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:04,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:04,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:04,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 10:11:04,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:04,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:04,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:04,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:04,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:11:04,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:11:04,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:04,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:04,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:05,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:05,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:11:05,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:05,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 10:11:05,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:05,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:05,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:05,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:05,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:11:05,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:11:05,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:11:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:05,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:05,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:05,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:05,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:11:05,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:05,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 10:11:05,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:05,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:11:05,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:05,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:11:05,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:11:05,467 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 10:11:05,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307043484] [2020-09-25 10:11:05,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:05,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:11:05,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946905538] [2020-09-25 10:11:05,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:11:05,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:05,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:11:05,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:11:05,474 INFO L87 Difference]: Start difference. First operand 1051 states and 1236 transitions. Second operand 13 states. [2020-09-25 10:11:10,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:10,990 INFO L93 Difference]: Finished difference Result 4405 states and 5833 transitions. [2020-09-25 10:11:10,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 10:11:10,991 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-09-25 10:11:10,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:11,018 INFO L225 Difference]: With dead ends: 4405 [2020-09-25 10:11:11,022 INFO L226 Difference]: Without dead ends: 3117 [2020-09-25 10:11:11,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=276, Invalid=594, Unknown=0, NotChecked=0, Total=870 [2020-09-25 10:11:11,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3117 states. [2020-09-25 10:11:11,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3117 to 2934. [2020-09-25 10:11:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2934 states. [2020-09-25 10:11:11,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 3548 transitions. [2020-09-25 10:11:11,176 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 3548 transitions. Word has length 162 [2020-09-25 10:11:11,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:11,177 INFO L479 AbstractCegarLoop]: Abstraction has 2934 states and 3548 transitions. [2020-09-25 10:11:11,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:11:11,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 3548 transitions. [2020-09-25 10:11:11,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 10:11:11,191 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:11,192 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:11:11,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:11:11,192 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:11,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:11,193 INFO L82 PathProgramCache]: Analyzing trace with hash -582188610, now seen corresponding path program 1 times [2020-09-25 10:11:11,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:11,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443993233] [2020-09-25 10:11:11,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:11,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:11,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:11,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:12,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:12,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:16,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 10:11:16,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:11:16,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 10:11:16,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:16,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:16,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:11:16,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:11:16,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 10:11:16,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:16,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:16,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:16,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:16,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:16,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 10:11:16,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:16,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:16,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:16,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:16,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:11:16,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:16,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:16,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:16,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:11:16,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:16,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 10:11:16,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:16,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:16,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:11:16,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:16,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:11:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:16,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:16,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:11:16,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:16,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 10:11:16,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:16,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:16,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:11:16,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:16,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:11:16,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:16,902 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 10:11:16,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443993233] [2020-09-25 10:11:16,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:16,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:11:16,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451537020] [2020-09-25 10:11:16,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:11:16,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:16,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:11:16,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:11:16,906 INFO L87 Difference]: Start difference. First operand 2934 states and 3548 transitions. Second operand 11 states. [2020-09-25 10:11:20,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:20,471 INFO L93 Difference]: Finished difference Result 6521 states and 8270 transitions. [2020-09-25 10:11:20,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:11:20,472 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 178 [2020-09-25 10:11:20,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:20,486 INFO L225 Difference]: With dead ends: 6521 [2020-09-25 10:11:20,487 INFO L226 Difference]: Without dead ends: 2559 [2020-09-25 10:11:20,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:11:20,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2559 states. [2020-09-25 10:11:20,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2559 to 2549. [2020-09-25 10:11:20,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2549 states. [2020-09-25 10:11:20,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 2977 transitions. [2020-09-25 10:11:20,581 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 2977 transitions. Word has length 178 [2020-09-25 10:11:20,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:20,581 INFO L479 AbstractCegarLoop]: Abstraction has 2549 states and 2977 transitions. [2020-09-25 10:11:20,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:11:20,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 2977 transitions. [2020-09-25 10:11:20,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 10:11:20,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:20,593 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:11:20,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:11:20,618 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:20,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:20,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1784063193, now seen corresponding path program 1 times [2020-09-25 10:11:20,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:20,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292328724] [2020-09-25 10:11:20,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:20,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:20,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:20,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:21,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:25,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:25,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-25 10:11:25,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:11:25,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 10:11:25,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:25,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:25,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:11:25,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-09-25 10:11:25,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 10:11:25,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:26,293 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2020-09-25 10:11:26,423 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 34 [2020-09-25 10:11:26,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:26,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:26,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:26,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:26,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:26,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:11:26,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:26,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:26,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:11:26,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:26,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:11:26,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:26,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:26,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:26,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:26,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:11:26,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:26,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:11:26,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:26,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:11:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:11:26,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:26,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:11:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:26,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:26,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:26,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:11:26,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:26,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:11:26,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:26,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:26,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:11:26,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:26,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:11:26,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:26,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 10:11:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:26,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:26,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:26,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:26,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:26,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 10:11:26,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:26,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:11:26,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 66 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-25 10:11:27,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292328724] [2020-09-25 10:11:27,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:27,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:11:27,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195130366] [2020-09-25 10:11:27,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:11:27,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:27,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:11:27,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:11:27,283 INFO L87 Difference]: Start difference. First operand 2549 states and 2977 transitions. Second operand 14 states. [2020-09-25 10:11:28,699 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102