/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=0.2 --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_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:16:35,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:16:35,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:16:35,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:16:35,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:16:35,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:16:35,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:16:35,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:16:35,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:16:35,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:16:35,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:16:35,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:16:35,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:16:35,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:16:35,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:16:35,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:16:35,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:16:35,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:16:35,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:16:35,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:16:35,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:16:35,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:16:35,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:16:35,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:16:35,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:16:35,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:16:35,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:16:35,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:16:35,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:16:35,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:16:35,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:16:35,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:16:35,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:16:35,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:16:35,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:16:35,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:16:35,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:16:35,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:16:35,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:16:35,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:16:35,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:16:35,524 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 11:16:35,549 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:16:35,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:16:35,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:16:35,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:16:35,551 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:16:35,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:16:35,551 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:16:35,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:16:35,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:16:35,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:16:35,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:16:35,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:16:35,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:16:35,553 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:16:35,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:16:35,553 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:16:35,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:16:35,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:16:35,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:16:35,554 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:16:35,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:16:35,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:16:35,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:16:35,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:16:35,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:16:35,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:16:35,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:16:35,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:16:35,556 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:16:35,556 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:16:36,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:16:36,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:16:36,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:16:36,048 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:16:36,048 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:16:36,049 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label30.c [2020-09-25 11:16:36,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8593ab07/5c38e8bc42524681b403b2e49ca949da/FLAG80675d209 [2020-09-25 11:16:36,801 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:16:36,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label30.c [2020-09-25 11:16:36,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8593ab07/5c38e8bc42524681b403b2e49ca949da/FLAG80675d209 [2020-09-25 11:16:37,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8593ab07/5c38e8bc42524681b403b2e49ca949da [2020-09-25 11:16:37,044 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:16:37,050 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:16:37,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:16:37,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:16:37,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:16:37,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:16:37" (1/1) ... [2020-09-25 11:16:37,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@233ca229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:37, skipping insertion in model container [2020-09-25 11:16:37,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:16:37" (1/1) ... [2020-09-25 11:16:37,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:16:37,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:16:37,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:16:37,577 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:16:37,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:16:37,882 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:16:37,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:37 WrapperNode [2020-09-25 11:16:37,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:16:37,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:16:37,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:16:37,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:16:37,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:37" (1/1) ... [2020-09-25 11:16:37,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:37" (1/1) ... [2020-09-25 11:16:37,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:37" (1/1) ... [2020-09-25 11:16:37,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:37" (1/1) ... [2020-09-25 11:16:37,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:37" (1/1) ... [2020-09-25 11:16:38,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:37" (1/1) ... [2020-09-25 11:16:38,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:37" (1/1) ... [2020-09-25 11:16:38,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:16:38,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:16:38,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:16:38,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:16:38,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:37" (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 11:16:38,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:16:38,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:16:38,147 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:16:38,147 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:16:38,147 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:16:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:16:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:16:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:16:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:16:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:16:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:16:39,836 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:16:39,838 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:16:39,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:16:39 BoogieIcfgContainer [2020-09-25 11:16:39,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:16:39,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:16:39,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:16:39,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:16:39,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:16:37" (1/3) ... [2020-09-25 11:16:39,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67754162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:16:39, skipping insertion in model container [2020-09-25 11:16:39,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:37" (2/3) ... [2020-09-25 11:16:39,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67754162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:16:39, skipping insertion in model container [2020-09-25 11:16:39,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:16:39" (3/3) ... [2020-09-25 11:16:39,872 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label30.c [2020-09-25 11:16:39,886 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:16:39,902 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:16:39,925 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:16:39,964 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:16:39,964 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:16:39,964 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:16:39,964 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:16:39,964 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:16:39,965 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:16:39,965 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:16:39,965 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:16:39,997 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:16:40,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 11:16:40,020 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:40,022 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, 1, 1, 1, 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 11:16:40,022 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:40,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:40,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1296859345, now seen corresponding path program 1 times [2020-09-25 11:16:40,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:40,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733506722] [2020-09-25 11:16:40,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:40,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:40,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:41,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:42,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:43,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:44,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:45,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:45,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:45,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 11:16:45,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:16:45,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:16:45,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:45,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:45,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:16:45,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 11:16:45,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 11:16:45,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:16:45,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:45,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:45,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:45,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:45,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:45,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 11:16:45,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:45,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:45,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:45,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:45,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:16:45,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:16:45,721 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 11:16:45,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733506722] [2020-09-25 11:16:45,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:16:45,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:16:45,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009746714] [2020-09-25 11:16:45,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:16:45,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:45,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:16:45,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:16:45,756 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 11:16:48,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:48,321 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 11:16:48,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:16:48,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-25 11:16:48,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:48,364 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 11:16:48,365 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 11:16:48,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 11:16:48,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 11:16:48,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 11:16:48,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 11:16:48,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 774 transitions. [2020-09-25 11:16:48,507 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 774 transitions. Word has length 154 [2020-09-25 11:16:48,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:48,511 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 774 transitions. [2020-09-25 11:16:48,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:16:48,511 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 774 transitions. [2020-09-25 11:16:48,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 11:16:48,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:48,529 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:16:48,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:16:48,529 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:48,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:48,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1108398122, now seen corresponding path program 1 times [2020-09-25 11:16:48,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:48,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566240006] [2020-09-25 11:16:48,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:48,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:48,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:49,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:50,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:52,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:52,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:52,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:52,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:53,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:53,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 11:16:53,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:16:53,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:16:53,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:53,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:53,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:16:53,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 11:16:53,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 11:16:53,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:53,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:53,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:53,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:53,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:53,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:53,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:16:53,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:53,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:53,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:16:53,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:53,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:16:53,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:53,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:53,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:53,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:53,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 11:16:53,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:53,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 11:16:53,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:53,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:53,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:53,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:53,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:16:53,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:16:53,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566240006] [2020-09-25 11:16:53,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:16:53,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:16:53,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288017473] [2020-09-25 11:16:53,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:16:53,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:53,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:16:53,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:16:53,928 INFO L87 Difference]: Start difference. First operand 613 states and 774 transitions. Second operand 5 states. [2020-09-25 11:16:55,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:55,790 INFO L93 Difference]: Finished difference Result 1521 states and 2021 transitions. [2020-09-25 11:16:55,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:16:55,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-09-25 11:16:55,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:55,807 INFO L225 Difference]: With dead ends: 1521 [2020-09-25 11:16:55,807 INFO L226 Difference]: Without dead ends: 930 [2020-09-25 11:16:55,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 11:16:55,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2020-09-25 11:16:55,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 917. [2020-09-25 11:16:55,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2020-09-25 11:16:55,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1188 transitions. [2020-09-25 11:16:55,855 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1188 transitions. Word has length 180 [2020-09-25 11:16:55,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:55,856 INFO L479 AbstractCegarLoop]: Abstraction has 917 states and 1188 transitions. [2020-09-25 11:16:55,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:16:55,856 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1188 transitions. [2020-09-25 11:16:55,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 11:16:55,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:55,862 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, 1, 1, 1, 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 11:16:55,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:16:55,863 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:55,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:55,863 INFO L82 PathProgramCache]: Analyzing trace with hash 566216652, now seen corresponding path program 1 times [2020-09-25 11:16:55,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:55,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137458003] [2020-09-25 11:16:55,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:55,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:55,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:56,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:56,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:00,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:00,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:00,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 11:17:00,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:17:00,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 11:17:00,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:00,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:00,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:00,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 11:17:00,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 11:17:00,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:01,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:01,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:01,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:01,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:01,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:01,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 11:17:01,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:01,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:01,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:01,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:01,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:01,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:01,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:01,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:01,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:01,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:17:01,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:01,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 11:17:01,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:01,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:01,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:01,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:01,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:17:01,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:01,224 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 11:17:01,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137458003] [2020-09-25 11:17:01,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:01,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:17:01,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212123962] [2020-09-25 11:17:01,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:17:01,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:01,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:17:01,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:17:01,227 INFO L87 Difference]: Start difference. First operand 917 states and 1188 transitions. Second operand 5 states. [2020-09-25 11:17:03,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:03,426 INFO L93 Difference]: Finished difference Result 2446 states and 3298 transitions. [2020-09-25 11:17:03,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:17:03,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-09-25 11:17:03,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:03,434 INFO L225 Difference]: With dead ends: 2446 [2020-09-25 11:17:03,435 INFO L226 Difference]: Without dead ends: 1187 [2020-09-25 11:17:03,440 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 11:17:03,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2020-09-25 11:17:03,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1168. [2020-09-25 11:17:03,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1168 states. [2020-09-25 11:17:03,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1412 transitions. [2020-09-25 11:17:03,482 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1412 transitions. Word has length 188 [2020-09-25 11:17:03,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:03,483 INFO L479 AbstractCegarLoop]: Abstraction has 1168 states and 1412 transitions. [2020-09-25 11:17:03,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:17:03,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1412 transitions. [2020-09-25 11:17:03,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 11:17:03,489 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:03,490 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:17:03,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:17:03,490 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:03,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:03,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1066593756, now seen corresponding path program 1 times [2020-09-25 11:17:03,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:03,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890354069] [2020-09-25 11:17:03,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:03,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:03,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:03,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:04,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:04,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:07,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:07,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:08,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:08,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-09-25 11:17:08,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:17:08,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:17:08,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:08,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:08,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:17:08,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:17:08,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-09-25 11:17:08,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:08,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:08,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:08,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:08,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:08,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:08,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:17:08,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:08,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:08,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:08,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:08,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:17:08,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:08,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:08,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:08,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:09,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:09,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 11:17:09,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:09,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-25 11:17:09,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:09,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:09,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:17:09,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:09,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 11:17:09,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:09,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890354069] [2020-09-25 11:17:09,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:09,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:17:09,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574158659] [2020-09-25 11:17:09,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:17:09,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:09,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:17:09,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:17:09,346 INFO L87 Difference]: Start difference. First operand 1168 states and 1412 transitions. Second operand 11 states. [2020-09-25 11:17:13,289 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-09-25 11:17:13,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:13,481 INFO L93 Difference]: Finished difference Result 3020 states and 3772 transitions. [2020-09-25 11:17:13,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:17:13,482 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 223 [2020-09-25 11:17:13,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:13,491 INFO L225 Difference]: With dead ends: 3020 [2020-09-25 11:17:13,492 INFO L226 Difference]: Without dead ends: 1581 [2020-09-25 11:17:13,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:17:13,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2020-09-25 11:17:13,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1487. [2020-09-25 11:17:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1487 states. [2020-09-25 11:17:13,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 1813 transitions. [2020-09-25 11:17:13,552 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 1813 transitions. Word has length 223 [2020-09-25 11:17:13,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:13,553 INFO L479 AbstractCegarLoop]: Abstraction has 1487 states and 1813 transitions. [2020-09-25 11:17:13,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:17:13,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 1813 transitions. [2020-09-25 11:17:13,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 11:17:13,560 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:13,560 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:13,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:17:13,561 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:13,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:13,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1460365443, now seen corresponding path program 1 times [2020-09-25 11:17:13,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:13,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255498706] [2020-09-25 11:17:13,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:13,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:14,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:14,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:18,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:18,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 11:17:18,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:17:18,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:17:18,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:18,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:17:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 11:17:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 11:17:18,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:18,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:18,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:18,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:18,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:18,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:18,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:17:18,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:18,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:18,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:18,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:18,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:18,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:17:18,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:18,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:18,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:18,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:17:18,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:18,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:17:18,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:18,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:18,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:18,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:18,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:18,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:18,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 11:17:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:18,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:19,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:19,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 11:17:19,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:19,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 11:17:19,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:19,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:19,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:17:19,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:17:19,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 11:17:19,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255498706] [2020-09-25 11:17:19,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:19,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:17:19,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837083210] [2020-09-25 11:17:19,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:17:19,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:19,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:17:19,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:17:19,358 INFO L87 Difference]: Start difference. First operand 1487 states and 1813 transitions. Second operand 8 states. [2020-09-25 11:17:21,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:21,620 INFO L93 Difference]: Finished difference Result 3361 states and 4215 transitions. [2020-09-25 11:17:21,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:17:21,621 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 229 [2020-09-25 11:17:21,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:21,633 INFO L225 Difference]: With dead ends: 3361 [2020-09-25 11:17:21,633 INFO L226 Difference]: Without dead ends: 1798 [2020-09-25 11:17:21,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:17:21,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2020-09-25 11:17:21,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1783. [2020-09-25 11:17:21,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1783 states. [2020-09-25 11:17:21,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 2126 transitions. [2020-09-25 11:17:21,706 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 2126 transitions. Word has length 229 [2020-09-25 11:17:21,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:21,707 INFO L479 AbstractCegarLoop]: Abstraction has 1783 states and 2126 transitions. [2020-09-25 11:17:21,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:17:21,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 2126 transitions. [2020-09-25 11:17:21,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 11:17:21,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:21,718 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:17:21,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:17:21,718 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:21,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:21,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1185164630, now seen corresponding path program 1 times [2020-09-25 11:17:21,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:21,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099644928] [2020-09-25 11:17:21,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:21,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:21,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:22,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:22,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking...