/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:09:35,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:09:35,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:09:35,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:09:35,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:09:35,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:09:35,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:09:35,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:09:35,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:09:35,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:09:35,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:09:35,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:09:35,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:09:35,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:09:35,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:09:35,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:09:35,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:09:35,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:09:35,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:09:35,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:09:35,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:09:35,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:09:35,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:09:35,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:09:35,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:09:35,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:09:35,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:09:35,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:09:35,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:09:35,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:09:35,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:09:35,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:09:35,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:09:35,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:09:35,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:09:35,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:09:35,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:09:35,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:09:35,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:09:35,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:09:35,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:09:35,417 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 [2020-09-24 17:09:35,465 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:09:35,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:09:35,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:09:35,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:09:35,469 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:09:35,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:09:35,470 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:09:35,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:09:35,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:09:35,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:09:35,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:09:35,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:09:35,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:09:35,472 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:09:35,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:09:35,473 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:09:35,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:09:35,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:09:35,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:09:35,474 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:09:35,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:09:35,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:09:35,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:09:35,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:09:35,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:09:35,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:09:35,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:09:35,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:09:35,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:09:35,476 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;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;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;log-additional-information=true; [2020-09-24 17:09:35,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:09:35,949 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:09:35,953 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:09:35,955 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:09:35,956 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:09:35,958 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-24 17:09:36,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f60942b30/690615a3b7974b9a9605bf6e0516b696/FLAG5fe8ee696 [2020-09-24 17:09:36,718 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:09:36,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-24 17:09:36,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f60942b30/690615a3b7974b9a9605bf6e0516b696/FLAG5fe8ee696 [2020-09-24 17:09:36,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f60942b30/690615a3b7974b9a9605bf6e0516b696 [2020-09-24 17:09:36,951 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:09:36,957 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:09:36,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:09:36,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:09:36,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:09:36,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:09:36" (1/1) ... [2020-09-24 17:09:36,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:36, skipping insertion in model container [2020-09-24 17:09:36,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:09:36" (1/1) ... [2020-09-24 17:09:36,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:09:37,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:09:37,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:09:37,523 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:09:37,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:09:37,781 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:09:37,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:37 WrapperNode [2020-09-24 17:09:37,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:09:37,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:09:37,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:09:37,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:09:37,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:37" (1/1) ... [2020-09-24 17:09:37,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:37" (1/1) ... [2020-09-24 17:09:37,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:37" (1/1) ... [2020-09-24 17:09:37,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:37" (1/1) ... [2020-09-24 17:09:37,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:37" (1/1) ... [2020-09-24 17:09:37,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:37" (1/1) ... [2020-09-24 17:09:37,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:37" (1/1) ... [2020-09-24 17:09:37,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:09:37,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:09:37,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:09:37,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:09:37,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:37" (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 [2020-09-24 17:09:38,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:09:38,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:09:38,031 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 17:09:38,032 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:09:38,032 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 17:09:38,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:09:38,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:09:38,032 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 17:09:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:09:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:09:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:09:39,335 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:09:39,335 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:09:39,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:09:39 BoogieIcfgContainer [2020-09-24 17:09:39,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:09:39,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:09:39,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:09:39,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:09:39,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:09:36" (1/3) ... [2020-09-24 17:09:39,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501e69ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:09:39, skipping insertion in model container [2020-09-24 17:09:39,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:37" (2/3) ... [2020-09-24 17:09:39,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501e69ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:09:39, skipping insertion in model container [2020-09-24 17:09:39,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:09:39" (3/3) ... [2020-09-24 17:09:39,355 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2020-09-24 17:09:39,367 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:09:39,378 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:09:39,401 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:09:39,439 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:09:39,439 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:09:39,439 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:09:39,439 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:09:39,440 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:09:39,440 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:09:39,440 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:09:39,440 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:09:39,472 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 17:09:39,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-24 17:09:39,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:39,496 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] [2020-09-24 17:09:39,496 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:39,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:39,504 INFO L82 PathProgramCache]: Analyzing trace with hash 461278893, now seen corresponding path program 1 times [2020-09-24 17:09:39,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:39,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485969589] [2020-09-24 17:09:39,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:39,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:40,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:40,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:40,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:40,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:40,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:41,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:41,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:42,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:42,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:44,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:51,586 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:51,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-24 17:09:51,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 17:09:51,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11809 [2020-09-24 17:09:51,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:51,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:09:51,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:09:51,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 17:09:51,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:09:51,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:51,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:51,823 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:51,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 17:09:51,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:51,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 17:09:51,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:09:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 17:09:51,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:51,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:09:51,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485969589] [2020-09-24 17:09:51,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:09:51,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:09:51,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270330006] [2020-09-24 17:09:51,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:09:51,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:51,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:09:51,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:09:51,936 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 17:09:54,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:54,168 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-24 17:09:54,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:09:54,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-09-24 17:09:54,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:54,217 INFO L225 Difference]: With dead ends: 1268 [2020-09-24 17:09:54,217 INFO L226 Difference]: Without dead ends: 694 [2020-09-24 17:09:54,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:09:54,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-24 17:09:54,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-24 17:09:54,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-24 17:09:54,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-24 17:09:54,371 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 141 [2020-09-24 17:09:54,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:54,372 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-24 17:09:54,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:09:54,373 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-24 17:09:54,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-24 17:09:54,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:54,386 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 17:09:54,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:09:54,387 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:54,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:54,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1572128645, now seen corresponding path program 1 times [2020-09-24 17:09:54,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:54,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50284629] [2020-09-24 17:09:54,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:54,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:54,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:54,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:57,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:57,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:59,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:02,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:07,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:08,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:09,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:13,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:15,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:15,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:18,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:18,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:19,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:25,455 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:10:25,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 17:10:25,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-24 17:10:25,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31024 [2020-09-24 17:10:25,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:10:25,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:10:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 17:10:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-24 17:10:25,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:10:25,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:10:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:10:25,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:25,607 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:10:25,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 17:10:25,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:10:25,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 17:10:25,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:10:25,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:10:25,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:10:25,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 17:10:25,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:10:25,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 17:10:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:10:25,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:25,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:25,685 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:10:25,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:10:25,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:10:25,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 17:10:25,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:10:25,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:10:25,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:10:25,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 17:10:25,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:10:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 17:10:25,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50284629] [2020-09-24 17:10:25,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:10:25,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 17:10:25,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667976407] [2020-09-24 17:10:25,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:10:25,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:10:25,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:10:25,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:10:25,769 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states.