/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=0.4 --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 13:33:11,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:33:11,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:33:11,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:33:11,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:33:11,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:33:11,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:33:11,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:33:11,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:33:11,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:33:11,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:33:11,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:33:11,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:33:11,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:33:11,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:33:11,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:33:11,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:33:11,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:33:11,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:33:11,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:33:11,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:33:11,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:33:11,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:33:11,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:33:11,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:33:11,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:33:11,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:33:11,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:33:11,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:33:11,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:33:11,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:33:11,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:33:11,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:33:11,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:33:11,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:33:11,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:33:11,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:33:11,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:33:11,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:33:11,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:33:11,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:33:11,935 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 13:33:11,984 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:33:11,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:33:11,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:33:11,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:33:11,986 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:33:11,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:33:11,989 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:33:11,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:33:11,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:33:11,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:33:11,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:33:11,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:33:11,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:33:11,990 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:33:11,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:33:11,991 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:33:11,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:33:11,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:33:11,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:33:11,991 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:33:11,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:33:11,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:33:11,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:33:11,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:33:11,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:33:11,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:33:11,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:33:11,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:33:11,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:33:11,997 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:33:12,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:33:12,463 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:33:12,468 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:33:12,469 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:33:12,471 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:33:12,472 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-25 13:33:12,552 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdaf515cf/54b3338abcd44a30a3069a1abe879c48/FLAG6acc85a75 [2020-09-25 13:33:13,158 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:33:13,159 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-25 13:33:13,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdaf515cf/54b3338abcd44a30a3069a1abe879c48/FLAG6acc85a75 [2020-09-25 13:33:13,423 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdaf515cf/54b3338abcd44a30a3069a1abe879c48 [2020-09-25 13:33:13,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:33:13,443 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:33:13,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:13,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:33:13,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:33:13,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:13" (1/1) ... [2020-09-25 13:33:13,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f0616b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:13, skipping insertion in model container [2020-09-25 13:33:13,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:13" (1/1) ... [2020-09-25 13:33:13,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:33:13,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:33:14,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:14,101 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:33:14,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:14,230 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:33:14,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:14 WrapperNode [2020-09-25 13:33:14,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:14,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:33:14,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:33:14,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:33:14,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:14" (1/1) ... [2020-09-25 13:33:14,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:14" (1/1) ... [2020-09-25 13:33:14,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:14" (1/1) ... [2020-09-25 13:33:14,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:14" (1/1) ... [2020-09-25 13:33:14,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:14" (1/1) ... [2020-09-25 13:33:14,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:14" (1/1) ... [2020-09-25 13:33:14,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:14" (1/1) ... [2020-09-25 13:33:14,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:33:14,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:33:14,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:33:14,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:33:14,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:14" (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 13:33:14,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:33:14,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:33:14,410 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:33:14,410 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:33:14,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:33:14,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:33:14,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:33:14,411 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:33:14,411 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:33:14,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:33:14,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:33:15,626 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:33:15,626 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:33:15,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:15 BoogieIcfgContainer [2020-09-25 13:33:15,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:33:15,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:33:15,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:33:15,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:33:15,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:33:13" (1/3) ... [2020-09-25 13:33:15,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58057cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:15, skipping insertion in model container [2020-09-25 13:33:15,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:14" (2/3) ... [2020-09-25 13:33:15,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58057cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:15, skipping insertion in model container [2020-09-25 13:33:15,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:15" (3/3) ... [2020-09-25 13:33:15,645 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label54.c [2020-09-25 13:33:15,656 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:33:15,667 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:33:15,689 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:33:15,723 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:33:15,723 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:33:15,724 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:33:15,724 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:33:15,724 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:33:15,724 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:33:15,724 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:33:15,724 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:33:15,758 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:33:15,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 13:33:15,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:15,779 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 13:33:15,779 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:15,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:15,786 INFO L82 PathProgramCache]: Analyzing trace with hash 79338610, now seen corresponding path program 1 times [2020-09-25 13:33:15,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:15,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971901645] [2020-09-25 13:33:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:16,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:16,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:16,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:16,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:17,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:18,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:18,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:20,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:21,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:21,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 13:33:21,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:33:21,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 13:33:21,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:21,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:21,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:21,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:33:21,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 13:33:21,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:33:21,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:21,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:21,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:21,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:21,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:21,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 13:33:21,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:21,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:21,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:33:21,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:21,391 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 13:33:21,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971901645] [2020-09-25 13:33:21,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:33:21,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:33:21,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107095127] [2020-09-25 13:33:21,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:33:21,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:21,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:33:21,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:33:21,426 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:33:23,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:23,646 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 13:33:23,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:33:23,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-09-25 13:33:23,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:23,692 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 13:33:23,692 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 13:33:23,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:23,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 13:33:23,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 13:33:23,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 13:33:23,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 13:33:23,873 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 127 [2020-09-25 13:33:23,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:23,875 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 13:33:23,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:33:23,876 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 13:33:23,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 13:33:23,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:23,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:23,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:33:23,890 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:23,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:23,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1464054185, now seen corresponding path program 1 times [2020-09-25 13:33:23,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:23,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806243343] [2020-09-25 13:33:23,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:23,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:24,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:24,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:24,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:25,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:25,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:28,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:28,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 13:33:28,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:33:28,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4761 [2020-09-25 13:33:28,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:28,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:28,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:28,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 13:33:28,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 13:33:28,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:28,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:28,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:28,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:28,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:28,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:28,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:33:28,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:28,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:28,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:28,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:28,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:28,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:28,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:28,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:28,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:28,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:33:28,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:28,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 13:33:28,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:28,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:28,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:28,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:28,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:33:28,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:28,956 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:28,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806243343] [2020-09-25 13:33:28,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:28,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:28,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061848770] [2020-09-25 13:33:28,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:28,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:28,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:28,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:28,961 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 5 states. [2020-09-25 13:33:30,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:30,596 INFO L93 Difference]: Finished difference Result 1536 states and 1967 transitions. [2020-09-25 13:33:30,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:30,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 13:33:30,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:30,606 INFO L225 Difference]: With dead ends: 1536 [2020-09-25 13:33:30,606 INFO L226 Difference]: Without dead ends: 943 [2020-09-25 13:33:30,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:30,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2020-09-25 13:33:30,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 921. [2020-09-25 13:33:30,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 921 states. [2020-09-25 13:33:30,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1109 transitions. [2020-09-25 13:33:30,651 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1109 transitions. Word has length 161 [2020-09-25 13:33:30,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:30,652 INFO L479 AbstractCegarLoop]: Abstraction has 921 states and 1109 transitions. [2020-09-25 13:33:30,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:30,652 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1109 transitions. [2020-09-25 13:33:30,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 13:33:30,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:30,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:30,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:33:30,657 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:30,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:30,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1343420525, now seen corresponding path program 1 times [2020-09-25 13:33:30,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:30,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787089558] [2020-09-25 13:33:30,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:30,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:30,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:30,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:31,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:32,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:35,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 13:33:35,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:33:35,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 13:33:35,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:35,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:35,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:33:35,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 13:33:35,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 13:33:35,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:35,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:35,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:35,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:35,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:35,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:33:35,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:35,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:35,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:35,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:35,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:35,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:35,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:35,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:35,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:33:35,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:35,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 13:33:35,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:35,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:35,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:33:35,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:35,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 13:33:35,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:36,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787089558] [2020-09-25 13:33:36,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:36,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:33:36,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819588608] [2020-09-25 13:33:36,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:33:36,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:36,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:33:36,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:33:36,206 INFO L87 Difference]: Start difference. First operand 921 states and 1109 transitions. Second operand 8 states. [2020-09-25 13:33:40,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:40,427 INFO L93 Difference]: Finished difference Result 2629 states and 3421 transitions. [2020-09-25 13:33:40,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:33:40,428 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 13:33:40,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:40,443 INFO L225 Difference]: With dead ends: 2629 [2020-09-25 13:33:40,443 INFO L226 Difference]: Without dead ends: 1637 [2020-09-25 13:33:40,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:33:40,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2020-09-25 13:33:40,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1565. [2020-09-25 13:33:40,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-09-25 13:33:40,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1880 transitions. [2020-09-25 13:33:40,521 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1880 transitions. Word has length 165 [2020-09-25 13:33:40,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:40,521 INFO L479 AbstractCegarLoop]: Abstraction has 1565 states and 1880 transitions. [2020-09-25 13:33:40,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:33:40,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1880 transitions. [2020-09-25 13:33:40,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 13:33:40,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:40,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:40,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:33:40,535 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:40,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:40,536 INFO L82 PathProgramCache]: Analyzing trace with hash 2038626761, now seen corresponding path program 1 times [2020-09-25 13:33:40,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:40,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521885352] [2020-09-25 13:33:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:40,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:40,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:41,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:42,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:42,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:42,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:45,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:45,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 13:33:45,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:33:45,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 13:33:45,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:45,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:45,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 13:33:45,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:33:45,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 13:33:45,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:46,184 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2020-09-25 13:33:46,341 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 41 [2020-09-25 13:33:46,500 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-09-25 13:33:46,659 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 33 [2020-09-25 13:33:46,787 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 30 [2020-09-25 13:33:46,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:46,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:46,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:46,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:46,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:46,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 13:33:46,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:46,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:46,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:33:46,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:46,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:33:46,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:46,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:46,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:46,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:47,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:47,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 13:33:47,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:33:47,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 13:33:47,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:47,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:47,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:47,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:47,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 13:33:47,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:47,592 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:47,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521885352] [2020-09-25 13:33:47,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:47,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 13:33:47,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467892381] [2020-09-25 13:33:47,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 13:33:47,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:47,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 13:33:47,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:33:47,596 INFO L87 Difference]: Start difference. First operand 1565 states and 1880 transitions. Second operand 16 states. [2020-09-25 13:33:52,235 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-09-25 13:33:52,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:52,380 INFO L93 Difference]: Finished difference Result 5255 states and 6619 transitions. [2020-09-25 13:33:52,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:33:52,381 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 171 [2020-09-25 13:33:52,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:52,402 INFO L225 Difference]: With dead ends: 5255 [2020-09-25 13:33:52,402 INFO L226 Difference]: Without dead ends: 3712 [2020-09-25 13:33:52,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2020-09-25 13:33:52,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3712 states. [2020-09-25 13:33:52,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3712 to 3392. [2020-09-25 13:33:52,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3392 states. [2020-09-25 13:33:52,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3392 states to 3392 states and 4124 transitions. [2020-09-25 13:33:52,542 INFO L78 Accepts]: Start accepts. Automaton has 3392 states and 4124 transitions. Word has length 171 [2020-09-25 13:33:52,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:52,542 INFO L479 AbstractCegarLoop]: Abstraction has 3392 states and 4124 transitions. [2020-09-25 13:33:52,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 13:33:52,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3392 states and 4124 transitions. [2020-09-25 13:33:52,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 13:33:52,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:52,555 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:52,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:33:52,555 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:52,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:52,556 INFO L82 PathProgramCache]: Analyzing trace with hash 207491829, now seen corresponding path program 1 times [2020-09-25 13:33:52,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:52,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104705833] [2020-09-25 13:33:52,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:52,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:52,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:52,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:52,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:53,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:54,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:57,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:57,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 13:33:57,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:33:57,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 13:33:57,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:57,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:57,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:57,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-25 13:33:57,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 13:33:57,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:57,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:57,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:57,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:57,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:57,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:57,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:33:57,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:57,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:57,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:57,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:57,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:57,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:57,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:57,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:57,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:57,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:33:57,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:57,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:33:57,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:57,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:57,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:57,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:57,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:57,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:57,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:33:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:57,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:57,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:57,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 13:33:57,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:57,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 13:33:57,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:57,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:57,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:57,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:57,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 13:33:57,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:57,945 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 13:33:57,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104705833] [2020-09-25 13:33:57,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:57,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:57,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666652351] [2020-09-25 13:33:57,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:57,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:57,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:57,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:57,948 INFO L87 Difference]: Start difference. First operand 3392 states and 4124 transitions. Second operand 5 states. [2020-09-25 13:34:00,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:00,172 INFO L93 Difference]: Finished difference Result 8318 states and 10427 transitions. [2020-09-25 13:34:00,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:34:00,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 13:34:00,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:00,199 INFO L225 Difference]: With dead ends: 8318 [2020-09-25 13:34:00,199 INFO L226 Difference]: Without dead ends: 4948 [2020-09-25 13:34:00,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:34:00,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4948 states. [2020-09-25 13:34:00,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4948 to 4636. [2020-09-25 13:34:00,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4636 states. [2020-09-25 13:34:00,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4636 states to 4636 states and 5681 transitions. [2020-09-25 13:34:00,332 INFO L78 Accepts]: Start accepts. Automaton has 4636 states and 5681 transitions. Word has length 189 [2020-09-25 13:34:00,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:00,333 INFO L479 AbstractCegarLoop]: Abstraction has 4636 states and 5681 transitions. [2020-09-25 13:34:00,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:34:00,334 INFO L276 IsEmpty]: Start isEmpty. Operand 4636 states and 5681 transitions. [2020-09-25 13:34:00,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 13:34:00,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:00,349 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:00,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:34:00,350 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:00,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:00,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1267089884, now seen corresponding path program 1 times [2020-09-25 13:34:00,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:00,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020567744] [2020-09-25 13:34:00,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:00,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:00,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:00,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:01,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking...