/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:05:24,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:05:24,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:05:24,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:05:24,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:05:24,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:05:24,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:05:24,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:05:24,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:05:24,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:05:24,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:05:24,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:05:24,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:05:24,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:05:24,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:05:24,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:05:24,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:05:24,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:05:24,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:05:24,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:05:24,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:05:24,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:05:24,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:05:24,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:05:24,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:05:24,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:05:24,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:05:24,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:05:24,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:05:24,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:05:24,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:05:24,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:05:24,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:05:24,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:05:24,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:05:24,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:05:24,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:05:24,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:05:24,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:05:24,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:05:24,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:05:24,969 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 09:05:25,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:05:25,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:05:25,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:05:25,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:05:25,020 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:05:25,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:05:25,020 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:05:25,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:05:25,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:05:25,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:05:25,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:05:25,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:05:25,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:05:25,023 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:05:25,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:05:25,023 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:05:25,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:05:25,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:05:25,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:05:25,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:05:25,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:05:25,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:05:25,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:05:25,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:05:25,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:05:25,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:05:25,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:05:25,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:05:25,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:05:25,026 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:05:25,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:05:25,501 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:05:25,507 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:05:25,509 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:05:25,509 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:05:25,511 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 09:05:25,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1424f2082/9e78ece50b174c9a9d02da7f9b675512/FLAG2be5ef982 [2020-09-25 09:05:26,235 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:05:26,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 09:05:26,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1424f2082/9e78ece50b174c9a9d02da7f9b675512/FLAG2be5ef982 [2020-09-25 09:05:26,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1424f2082/9e78ece50b174c9a9d02da7f9b675512 [2020-09-25 09:05:26,487 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:05:26,494 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:05:26,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:26,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:05:26,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:05:26,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:26" (1/1) ... [2020-09-25 09:05:26,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:26, skipping insertion in model container [2020-09-25 09:05:26,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:26" (1/1) ... [2020-09-25 09:05:26,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:05:26,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:05:27,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:27,114 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:05:27,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:27,397 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:05:27,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:27 WrapperNode [2020-09-25 09:05:27,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:27,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:05:27,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:05:27,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:05:27,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:27" (1/1) ... [2020-09-25 09:05:27,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:27" (1/1) ... [2020-09-25 09:05:27,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:27" (1/1) ... [2020-09-25 09:05:27,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:27" (1/1) ... [2020-09-25 09:05:27,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:27" (1/1) ... [2020-09-25 09:05:27,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:27" (1/1) ... [2020-09-25 09:05:27,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:27" (1/1) ... [2020-09-25 09:05:27,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:05:27,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:05:27,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:05:27,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:05:27,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:27" (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 09:05:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:05:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:05:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:05:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:05:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:05:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:05:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:05:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:05:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:05:27,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:05:27,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:05:29,454 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:05:29,455 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:05:29,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:29 BoogieIcfgContainer [2020-09-25 09:05:29,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:05:29,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:05:29,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:05:29,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:05:29,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:05:26" (1/3) ... [2020-09-25 09:05:29,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:29, skipping insertion in model container [2020-09-25 09:05:29,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:27" (2/3) ... [2020-09-25 09:05:29,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:29, skipping insertion in model container [2020-09-25 09:05:29,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:29" (3/3) ... [2020-09-25 09:05:29,476 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label30.c [2020-09-25 09:05:29,489 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:05:29,501 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:05:29,525 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:05:29,561 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:05:29,561 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:05:29,562 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:05:29,562 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:05:29,562 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:05:29,562 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:05:29,562 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:05:29,563 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:05:29,594 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:05:29,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 09:05:29,605 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:29,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:29,607 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:29,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:29,616 INFO L82 PathProgramCache]: Analyzing trace with hash -985821505, now seen corresponding path program 1 times [2020-09-25 09:05:29,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:29,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939204010] [2020-09-25 09:05:29,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:29,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:30,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:30,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:30,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:30,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 09:05:30,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:05:30,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 830 [2020-09-25 09:05:30,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:30,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:30,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:30,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:05:30,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 09:05:30,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 09:05:30,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:30,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:30,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:30,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:30,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:30,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 09:05:30,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:30,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:30,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:30,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:30,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:05:30,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:05:30,883 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 09:05:30,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939204010] [2020-09-25 09:05:30,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:30,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:05:30,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806513306] [2020-09-25 09:05:30,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:05:30,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:30,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:05:30,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:05:30,925 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 09:05:32,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:32,881 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 09:05:32,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:05:32,886 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-25 09:05:32,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:32,920 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 09:05:32,920 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 09:05:32,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:05:32,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 09:05:33,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 09:05:33,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 09:05:33,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 09:05:33,041 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 53 [2020-09-25 09:05:33,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:33,042 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 09:05:33,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:05:33,042 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 09:05:33,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 09:05:33,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:33,052 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:33,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:05:33,052 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:33,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:33,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1694818480, now seen corresponding path program 1 times [2020-09-25 09:05:33,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:33,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507121812] [2020-09-25 09:05:33,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:33,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:33,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:33,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:33,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:33,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:34,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:38,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:38,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 09:05:38,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:05:38,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 09:05:38,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:38,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:05:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 09:05:38,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:38,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:38,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:38,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:38,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:38,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:38,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:05:38,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:38,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:05:38,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:38,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:38,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:38,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:38,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:38,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:05:38,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:38,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 09:05:38,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:38,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:38,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:38,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 09:05:38,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:38,666 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:05:38,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507121812] [2020-09-25 09:05:38,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:38,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:05:38,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311793847] [2020-09-25 09:05:38,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:05:38,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:38,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:05:38,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:38,671 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 09:05:40,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:40,316 INFO L93 Difference]: Finished difference Result 1226 states and 1532 transitions. [2020-09-25 09:05:40,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:05:40,317 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2020-09-25 09:05:40,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:40,322 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 09:05:40,322 INFO L226 Difference]: Without dead ends: 697 [2020-09-25 09:05:40,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:05:40,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-09-25 09:05:40,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 695. [2020-09-25 09:05:40,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 09:05:40,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 09:05:40,369 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 132 [2020-09-25 09:05:40,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:40,372 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 09:05:40,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:05:40,372 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 09:05:40,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 09:05:40,386 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:40,387 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:40,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:05:40,387 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:40,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:40,388 INFO L82 PathProgramCache]: Analyzing trace with hash 550197362, now seen corresponding path program 1 times [2020-09-25 09:05:40,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:40,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960622272] [2020-09-25 09:05:40,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:40,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:40,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:40,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:40,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:41,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:43,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:43,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 09:05:43,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:05:43,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2667 [2020-09-25 09:05:43,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:43,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 09:05:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 09:05:43,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:43,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:43,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:43,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:43,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:43,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:43,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:05:43,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:43,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:43,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:43,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:43,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:43,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:43,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:43,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:05:43,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:43,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 09:05:43,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:43,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:43,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:43,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:43,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 09:05:43,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:43,438 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:43,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960622272] [2020-09-25 09:05:43,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:43,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:05:43,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607504409] [2020-09-25 09:05:43,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:05:43,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:43,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:05:43,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:05:43,443 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 5 states. [2020-09-25 09:05:45,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:45,261 INFO L93 Difference]: Finished difference Result 1553 states and 1986 transitions. [2020-09-25 09:05:45,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:05:45,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 09:05:45,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:45,271 INFO L225 Difference]: With dead ends: 1553 [2020-09-25 09:05:45,271 INFO L226 Difference]: Without dead ends: 1023 [2020-09-25 09:05:45,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:45,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2020-09-25 09:05:45,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1001. [2020-09-25 09:05:45,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-09-25 09:05:45,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1222 transitions. [2020-09-25 09:05:45,318 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1222 transitions. Word has length 142 [2020-09-25 09:05:45,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:45,325 INFO L479 AbstractCegarLoop]: Abstraction has 1001 states and 1222 transitions. [2020-09-25 09:05:45,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:05:45,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1222 transitions. [2020-09-25 09:05:45,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 09:05:45,327 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:45,328 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:45,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:05:45,328 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:45,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:45,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1412489046, now seen corresponding path program 1 times [2020-09-25 09:05:45,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:45,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896227156] [2020-09-25 09:05:45,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:45,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:45,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:45,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:45,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:46,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:48,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:48,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 09:05:48,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:05:48,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2783 [2020-09-25 09:05:48,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:48,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:48,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:48,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:05:48,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 09:05:48,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:48,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:48,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:48,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:48,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:48,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:48,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:05:48,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:48,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:48,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:48,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:05:48,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:05:48,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:48,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:48,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:48,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 09:05:48,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:48,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 09:05:48,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:48,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:48,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:48,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:48,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 09:05:48,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:05:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:48,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896227156] [2020-09-25 09:05:48,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:48,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:05:48,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970468290] [2020-09-25 09:05:48,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:05:48,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:48,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:05:48,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:05:48,484 INFO L87 Difference]: Start difference. First operand 1001 states and 1222 transitions. Second operand 7 states. [2020-09-25 09:05:50,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:50,686 INFO L93 Difference]: Finished difference Result 2209 states and 2822 transitions. [2020-09-25 09:05:50,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:05:50,687 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-09-25 09:05:50,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:50,696 INFO L225 Difference]: With dead ends: 2209 [2020-09-25 09:05:50,696 INFO L226 Difference]: Without dead ends: 1373 [2020-09-25 09:05:50,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:05:50,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2020-09-25 09:05:50,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1329. [2020-09-25 09:05:50,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1329 states. [2020-09-25 09:05:50,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1583 transitions. [2020-09-25 09:05:50,744 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1583 transitions. Word has length 144 [2020-09-25 09:05:50,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:50,745 INFO L479 AbstractCegarLoop]: Abstraction has 1329 states and 1583 transitions. [2020-09-25 09:05:50,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:05:50,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1583 transitions. [2020-09-25 09:05:50,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 09:05:50,749 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:50,749 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:50,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:05:50,750 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:50,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:50,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1465784404, now seen corresponding path program 1 times [2020-09-25 09:05:50,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:50,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153862929] [2020-09-25 09:05:50,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:50,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:50,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:51,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:52,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:52,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:52,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:53,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:53,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:53,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:55,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:55,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 09:05:55,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:05:55,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 09:05:55,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:55,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:55,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:55,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:05:55,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 09:05:55,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:05:55,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:55,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:56,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:56,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:56,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:56,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 09:05:56,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:56,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:05:56,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:56,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:56,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:56,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:56,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:56,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:05:56,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:56,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 09:05:56,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:56,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:56,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:56,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:56,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 09:05:56,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:05:56,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 09:05:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:56,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:56,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:56,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:56,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:05:56,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:56,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-09-25 09:05:56,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:56,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:56,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:56,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:56,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:05:56,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:56,743 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 09:05:56,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153862929] [2020-09-25 09:05:56,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:56,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:05:56,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733352590] [2020-09-25 09:05:56,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:05:56,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:56,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:05:56,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:05:56,745 INFO L87 Difference]: Start difference. First operand 1329 states and 1583 transitions. Second operand 10 states. [2020-09-25 09:06:00,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:00,635 INFO L93 Difference]: Finished difference Result 3468 states and 4425 transitions. [2020-09-25 09:06:00,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:06:00,636 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 225 [2020-09-25 09:06:00,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:00,650 INFO L225 Difference]: With dead ends: 3468 [2020-09-25 09:06:00,651 INFO L226 Difference]: Without dead ends: 2285 [2020-09-25 09:06:00,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:06:00,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2020-09-25 09:06:00,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2100. [2020-09-25 09:06:00,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2100 states. [2020-09-25 09:06:00,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2494 transitions. [2020-09-25 09:06:00,762 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2494 transitions. Word has length 225 [2020-09-25 09:06:00,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:00,763 INFO L479 AbstractCegarLoop]: Abstraction has 2100 states and 2494 transitions. [2020-09-25 09:06:00,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:06:00,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2494 transitions. [2020-09-25 09:06:00,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 09:06:00,771 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:00,772 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:06:00,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:06:00,772 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:00,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:00,773 INFO L82 PathProgramCache]: Analyzing trace with hash -367593207, now seen corresponding path program 1 times [2020-09-25 09:06:00,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:00,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503472232] [2020-09-25 09:06:00,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:00,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:01,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:01,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:02,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:02,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:02,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:04,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:04,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:05,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:05,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:05,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:05,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 09:06:05,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:06:05,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:06:05,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:05,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:05,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:06:05,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 09:06:05,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 09:06:05,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:05,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:05,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:05,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:05,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:05,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:05,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:06:05,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:05,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:05,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:05,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:05,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:06,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:06,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:06:06,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:06,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 09:06:06,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:06,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:06,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:06,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:06,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 09:06:06,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:06,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 09:06:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:06,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:06,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:06,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:06,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 09:06:06,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:06,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 09:06:06,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:06,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:06,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:06,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:06,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 09:06:06,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 106 proven. 33 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:06:06,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503472232] [2020-09-25 09:06:06,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:06,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:06:06,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282691391] [2020-09-25 09:06:06,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:06:06,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:06,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:06:06,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:06:06,445 INFO L87 Difference]: Start difference. First operand 2100 states and 2494 transitions. Second operand 9 states. [2020-09-25 09:06:10,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:10,272 INFO L93 Difference]: Finished difference Result 6127 states and 7720 transitions. [2020-09-25 09:06:10,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 09:06:10,273 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 230 [2020-09-25 09:06:10,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:10,293 INFO L225 Difference]: With dead ends: 6127 [2020-09-25 09:06:10,294 INFO L226 Difference]: Without dead ends: 4192 [2020-09-25 09:06:10,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:06:10,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4192 states. [2020-09-25 09:06:10,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4192 to 3668. [2020-09-25 09:06:10,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3668 states. [2020-09-25 09:06:10,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 4482 transitions. [2020-09-25 09:06:10,422 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 4482 transitions. Word has length 230 [2020-09-25 09:06:10,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:10,423 INFO L479 AbstractCegarLoop]: Abstraction has 3668 states and 4482 transitions. [2020-09-25 09:06:10,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:06:10,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 4482 transitions. [2020-09-25 09:06:10,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-09-25 09:06:10,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:10,432 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:06:10,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:06:10,432 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:10,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:10,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1710451650, now seen corresponding path program 1 times [2020-09-25 09:06:10,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:10,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228536920] [2020-09-25 09:06:10,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:10,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:10,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:10,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:11,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:11,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:11,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking...