/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:57:25,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:57:25,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:57:25,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:57:25,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:57:25,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:57:25,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:57:25,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:57:25,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:57:25,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:57:25,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:57:25,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:57:25,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:57:25,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:57:25,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:57:25,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:57:25,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:57:25,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:57:25,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:57:25,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:57:25,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:57:25,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:57:25,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:57:25,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:57:25,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:57:25,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:57:25,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:57:25,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:57:25,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:57:25,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:57:25,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:57:25,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:57:25,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:57:25,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:57:25,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:57:25,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:57:25,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:57:25,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:57:25,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:57:25,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:57:25,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:57:25,342 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 [2020-10-12 11:57:25,370 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:57:25,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:57:25,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:57:25,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:57:25,377 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:57:25,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:57:25,378 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:57:25,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:57:25,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:57:25,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:57:25,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:57:25,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:57:25,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:57:25,379 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:57:25,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:57:25,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:57:25,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:57:25,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:57:25,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:57:25,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:57:25,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:57:25,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:57:25,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:57:25,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:57:25,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:57:25,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:57:25,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:57:25,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:57:25,382 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:57:25,383 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:57:25,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:57:25,690 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:57:25,693 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:57:25,695 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:57:25,696 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:57:25,697 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label46.c [2020-10-12 11:57:25,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64913f6e0/1a1a74ed57c14d8fb24a27e13d8a2707/FLAG0d15aef25 [2020-10-12 11:57:26,615 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:57:26,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label46.c [2020-10-12 11:57:26,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64913f6e0/1a1a74ed57c14d8fb24a27e13d8a2707/FLAG0d15aef25 [2020-10-12 11:57:27,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64913f6e0/1a1a74ed57c14d8fb24a27e13d8a2707 [2020-10-12 11:57:27,098 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:57:27,099 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:57:27,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:57:27,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:57:27,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:57:27,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:57:27" (1/1) ... [2020-10-12 11:57:27,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@490952e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:27, skipping insertion in model container [2020-10-12 11:57:27,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:57:27" (1/1) ... [2020-10-12 11:57:27,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:57:27,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:57:29,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:57:29,845 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:57:30,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:57:31,027 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:57:31,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:31 WrapperNode [2020-10-12 11:57:31,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:57:31,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:57:31,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:57:31,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:57:31,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:31" (1/1) ... [2020-10-12 11:57:31,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:31" (1/1) ... [2020-10-12 11:57:31,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:31" (1/1) ... [2020-10-12 11:57:31,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:31" (1/1) ... [2020-10-12 11:57:31,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:31" (1/1) ... [2020-10-12 11:57:31,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:31" (1/1) ... [2020-10-12 11:57:31,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:31" (1/1) ... [2020-10-12 11:57:31,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:57:31,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:57:31,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:57:31,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:57:31,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:31" (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 [2020-10-12 11:57:31,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:57:31,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:57:31,691 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:57:31,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:57:31,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:57:31,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:57:31,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 11:57:31,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-12 11:57:31,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-12 11:57:31,693 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-12 11:57:31,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:57:31,693 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:57:31,693 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:57:31,693 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:57:31,694 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:57:31,694 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 11:57:31,694 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-12 11:57:31,694 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-12 11:57:31,694 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-12 11:57:31,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:57:31,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:57:31,695 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:57:31,695 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:57:31,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:57:31,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:57:39,838 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:57:39,839 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:57:39,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:57:39 BoogieIcfgContainer [2020-10-12 11:57:39,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:57:39,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:57:39,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:57:39,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:57:39,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:57:27" (1/3) ... [2020-10-12 11:57:39,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f969ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:57:39, skipping insertion in model container [2020-10-12 11:57:39,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:31" (2/3) ... [2020-10-12 11:57:39,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f969ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:57:39, skipping insertion in model container [2020-10-12 11:57:39,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:57:39" (3/3) ... [2020-10-12 11:57:39,864 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label46.c [2020-10-12 11:57:39,875 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:57:39,885 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:57:39,899 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:57:39,934 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:57:39,934 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:57:39,934 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:57:39,934 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:57:39,934 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:57:39,934 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:57:39,934 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:57:39,935 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:57:39,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-12 11:57:40,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1711 [2020-10-12 11:57:40,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:57:40,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:57:40,099 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:57:40,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:57:40,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1070221185, now seen corresponding path program 1 times [2020-10-12 11:57:40,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:57:40,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194269290] [2020-10-12 11:57:40,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:57:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:57:41,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:57:46,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:57:46,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1732 [2020-10-12 11:57:46,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:57:46,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5191 [2020-10-12 11:57:46,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:57:46,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:57:46,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:57:46,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1726 [2020-10-12 11:57:46,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:57:48,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:57:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:57:48,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:57:48,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:57:48,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:57:48,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:57:48,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 11:57:48,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:57:48,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:57:48,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:57:48,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:57:48,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:57:51,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:57:51,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194269290] [2020-10-12 11:57:51,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:57:51,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 11:57:51,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722915209] [2020-10-12 11:57:51,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:57:51,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:57:51,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:57:51,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:57:51,232 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 5 states. [2020-10-12 11:58:15,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:58:15,627 INFO L93 Difference]: Finished difference Result 8125 states and 15405 transitions. [2020-10-12 11:58:15,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:58:15,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1710 [2020-10-12 11:58:15,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:58:15,691 INFO L225 Difference]: With dead ends: 8125 [2020-10-12 11:58:15,691 INFO L226 Difference]: Without dead ends: 5835 [2020-10-12 11:58:15,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:58:15,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5835 states. [2020-10-12 11:58:15,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5835 to 5801. [2020-10-12 11:58:15,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5801 states. [2020-10-12 11:58:15,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 9384 transitions. [2020-10-12 11:58:15,997 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 9384 transitions. Word has length 1710 [2020-10-12 11:58:16,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:58:16,003 INFO L479 AbstractCegarLoop]: Abstraction has 5801 states and 9384 transitions. [2020-10-12 11:58:16,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:58:16,003 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 9384 transitions. [2020-10-12 11:58:16,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1735 [2020-10-12 11:58:16,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:58:16,124 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:58:16,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:58:16,126 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:58:16,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:58:16,127 INFO L82 PathProgramCache]: Analyzing trace with hash -722626066, now seen corresponding path program 1 times [2020-10-12 11:58:16,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:58:16,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825228695] [2020-10-12 11:58:16,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:58:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:58:16,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:58:16,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:58:16,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:58:21,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:58:21,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1760 [2020-10-12 11:58:21,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:58:21,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5244 [2020-10-12 11:58:21,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:58:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 11:58:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 11:58:21,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1294 [2020-10-12 11:58:21,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:58:30,058 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-12 11:58:30,188 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-12 11:58:30,529 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2020-10-12 11:58:31,327 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2020-10-12 11:58:31,516 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 39 [2020-10-12 11:58:31,775 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 38 [2020-10-12 11:58:31,950 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 30 [2020-10-12 11:58:32,107 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2020-10-12 11:58:32,289 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2020-10-12 11:58:32,499 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 36 [2020-10-12 11:58:32,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:58:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:58:32,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:58:32,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:58:32,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:58:32,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:58:32,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:58:32,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:58:32,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:58:32,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:58:32,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:58:32,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:58:32,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:58:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:58:32,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:58:32,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:58:32,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:58:32,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:58:32,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:58:32,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:58:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:58:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:58:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:58:32,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:58:32,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 11:58:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:58:32,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:58:32,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:58:32,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:58:32,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:58:32,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 11:58:32,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:58:32,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:58:32,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:58:32,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:58:32,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:58:52,249 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 11:58:52,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825228695] [2020-10-12 11:58:52,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:58:52,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 11:58:52,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116098493] [2020-10-12 11:58:52,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 11:58:52,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:58:52,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 11:58:52,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2020-10-12 11:58:52,261 INFO L87 Difference]: Start difference. First operand 5801 states and 9384 transitions. Second operand 23 states. [2020-10-12 11:58:52,969 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-12 11:58:53,136 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-12 11:58:54,460 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-12 11:59:15,627 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-12 11:59:20,628 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-12 11:59:30,306 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-12 11:59:32,592 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2020-10-12 11:59:34,916 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-10-12 11:59:40,194 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-12 11:59:41,964 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-10-12 11:59:57,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:59:57,211 INFO L93 Difference]: Finished difference Result 12907 states and 21400 transitions. [2020-10-12 11:59:57,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 11:59:57,214 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1734 [2020-10-12 11:59:57,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:59:57,251 INFO L225 Difference]: With dead ends: 12907 [2020-10-12 11:59:57,252 INFO L226 Difference]: Without dead ends: 7112 [2020-10-12 11:59:57,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 11:59:57,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7112 states. [2020-10-12 11:59:57,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7112 to 7105. [2020-10-12 11:59:57,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7105 states. [2020-10-12 11:59:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 10722 transitions. [2020-10-12 11:59:57,436 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 10722 transitions. Word has length 1734 [2020-10-12 11:59:57,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:59:57,439 INFO L479 AbstractCegarLoop]: Abstraction has 7105 states and 10722 transitions. [2020-10-12 11:59:57,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 11:59:57,439 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 10722 transitions. [2020-10-12 11:59:57,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1738 [2020-10-12 11:59:57,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:59:57,488 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:59:57,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:59:57,489 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:59:57,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:59:57,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1432414630, now seen corresponding path program 1 times [2020-10-12 11:59:57,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:59:57,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194592999] [2020-10-12 11:59:57,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:59:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:59:57,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:59:57,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:59:57,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:59:58,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:00:02,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:00:02,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1763 [2020-10-12 12:00:02,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 12:00:02,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-12 12:00:02,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:00:02,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 12:00:02,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 12:00:02,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 798 [2020-10-12 12:00:02,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:00:05,077 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2020-10-12 12:00:06,266 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 36 [2020-10-12 12:00:06,444 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 41 [2020-10-12 12:00:06,681 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 43 [2020-10-12 12:00:06,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:00:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:00:06,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:00:06,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:00:06,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:00:06,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:00:06,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 12:00:06,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:00:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:00:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:00:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:00:06,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:00:06,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:00:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:00:06,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:00:06,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:00:06,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 12:00:06,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:00:06,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 12:00:06,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:00:06,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:00:06,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:00:06,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 12:00:06,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:00:06,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 12:00:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:00:06,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:00:06,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:00:06,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:00:06,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:00:06,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 12:00:06,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:00:06,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 12:00:06,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:00:06,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 12:00:06,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:00:06,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 12:00:06,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:00:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 12:00:18,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194592999] [2020-10-12 12:00:18,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:00:18,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 12:00:18,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997854572] [2020-10-12 12:00:18,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 12:00:18,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:00:18,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 12:00:18,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2020-10-12 12:00:18,114 INFO L87 Difference]: Start difference. First operand 7105 states and 10722 transitions. Second operand 22 states. [2020-10-12 12:01:09,376 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52