/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --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_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:38:49,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:38:49,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:38:49,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:38:49,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:38:49,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:38:49,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:38:49,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:38:49,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:38:49,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:38:49,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:38:49,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:38:49,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:38:49,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:38:49,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:38:49,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:38:49,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:38:49,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:38:49,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:38:49,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:38:49,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:38:49,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:38:49,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:38:49,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:38:49,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:38:49,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:38:49,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:38:49,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:38:49,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:38:49,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:38:49,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:38:49,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:38:49,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:38:49,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:38:49,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:38:49,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:38:49,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:38:49,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:38:49,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:38:49,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:38:49,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:38:49,502 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 21:38:49,528 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:38:49,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:38:49,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:38:49,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:38:49,530 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:38:49,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:38:49,531 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:38:49,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:38:49,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:38:49,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:38:49,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:38:49,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:38:49,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:38:49,532 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:38:49,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:38:49,533 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:38:49,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:38:49,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:38:49,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:38:49,533 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:38:49,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:38:49,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:38:49,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:38:49,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:38:49,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:38:49,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:38:49,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:38:49,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:38:49,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:38:49,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:38:50,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:38:50,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:38:50,027 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:38:50,029 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:38:50,030 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:38:50,031 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-09-24 21:38:50,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7eb0d7ea/26fe8808cc0f418785d68b0ea84c2449/FLAGf92f32899 [2020-09-24 21:38:50,806 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:38:50,807 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-09-24 21:38:50,821 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7eb0d7ea/26fe8808cc0f418785d68b0ea84c2449/FLAGf92f32899 [2020-09-24 21:38:51,043 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7eb0d7ea/26fe8808cc0f418785d68b0ea84c2449 [2020-09-24 21:38:51,057 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:38:51,064 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:38:51,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:38:51,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:38:51,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:38:51,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:38:51" (1/1) ... [2020-09-24 21:38:51,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce0c36b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:51, skipping insertion in model container [2020-09-24 21:38:51,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:38:51" (1/1) ... [2020-09-24 21:38:51,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:38:51,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:38:51,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:38:51,694 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:38:51,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:38:51,975 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:38:51,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:51 WrapperNode [2020-09-24 21:38:51,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:38:51,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:38:51,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:38:51,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:38:51,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:51" (1/1) ... [2020-09-24 21:38:51,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:51" (1/1) ... [2020-09-24 21:38:52,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:51" (1/1) ... [2020-09-24 21:38:52,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:51" (1/1) ... [2020-09-24 21:38:52,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:51" (1/1) ... [2020-09-24 21:38:52,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:51" (1/1) ... [2020-09-24 21:38:52,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:51" (1/1) ... [2020-09-24 21:38:52,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:38:52,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:38:52,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:38:52,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:38:52,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:51" (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 21:38:52,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:38:52,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:38:52,163 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:38:52,163 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:38:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:38:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:38:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:38:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:38:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:38:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:38:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:38:53,560 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:38:53,560 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:38:53,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:38:53 BoogieIcfgContainer [2020-09-24 21:38:53,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:38:53,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:38:53,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:38:53,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:38:53,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:38:51" (1/3) ... [2020-09-24 21:38:53,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490f50f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:38:53, skipping insertion in model container [2020-09-24 21:38:53,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:51" (2/3) ... [2020-09-24 21:38:53,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490f50f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:38:53, skipping insertion in model container [2020-09-24 21:38:53,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:38:53" (3/3) ... [2020-09-24 21:38:53,581 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label06.c [2020-09-24 21:38:53,593 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:38:53,605 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:38:53,628 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:38:53,665 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:38:53,665 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:38:53,665 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:38:53,665 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:38:53,665 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:38:53,666 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:38:53,666 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:38:53,666 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:38:53,701 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 21:38:53,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-24 21:38:53,724 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:53,725 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] [2020-09-24 21:38:53,726 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:53,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:53,734 INFO L82 PathProgramCache]: Analyzing trace with hash 730138415, now seen corresponding path program 1 times [2020-09-24 21:38:53,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:53,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810235507] [2020-09-24 21:38:53,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:54,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:54,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:55,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:55,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:57,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:58,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:58,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:59,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:59,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-24 21:38:59,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:38:59,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 21:38:59,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:59,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:38:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:38:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 21:38:59,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:38:59,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:59,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:59,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:59,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:38:59,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:59,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-24 21:38:59,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:38:59,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:59,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:38:59,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:00,299 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 21:39:00,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810235507] [2020-09-24 21:39:00,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:39:00,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-09-24 21:39:00,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473804067] [2020-09-24 21:39:00,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 21:39:00,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:39:00,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 21:39:00,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:39:00,331 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 19 states. [2020-09-24 21:39:00,815 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-09-24 21:39:01,029 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-09-24 21:39:01,269 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-09-24 21:39:01,542 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-09-24 21:39:01,844 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-09-24 21:39:02,336 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-09-24 21:39:03,218 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-09-24 21:39:03,677 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-09-24 21:39:07,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:39:07,224 INFO L93 Difference]: Finished difference Result 1700 states and 2421 transitions. [2020-09-24 21:39:07,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 21:39:07,227 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 152 [2020-09-24 21:39:07,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:39:07,258 INFO L225 Difference]: With dead ends: 1700 [2020-09-24 21:39:07,259 INFO L226 Difference]: Without dead ends: 1101 [2020-09-24 21:39:07,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=311, Invalid=681, Unknown=0, NotChecked=0, Total=992 [2020-09-24 21:39:07,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-09-24 21:39:07,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 985. [2020-09-24 21:39:07,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-09-24 21:39:07,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1148 transitions. [2020-09-24 21:39:07,402 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1148 transitions. Word has length 152 [2020-09-24 21:39:07,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:39:07,403 INFO L479 AbstractCegarLoop]: Abstraction has 985 states and 1148 transitions. [2020-09-24 21:39:07,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 21:39:07,403 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1148 transitions. [2020-09-24 21:39:07,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-24 21:39:07,416 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:39:07,416 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:39:07,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:39:07,417 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:39:07,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:39:07,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1615076354, now seen corresponding path program 1 times [2020-09-24 21:39:07,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:39:07,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619600341] [2020-09-24 21:39:07,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:39:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:07,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:07,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:07,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:08,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:09,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:11,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:12,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:12,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-24 21:39:12,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:39:12,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-24 21:39:12,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:39:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:39:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 21:39:12,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:39:12,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:39:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:12,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:12,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:12,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:39:12,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:12,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 21:39:12,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:12,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:39:12,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:12,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:39:12,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 21:39:12,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:39:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:13,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:13,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:13,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:13,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:39:13,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:39:13,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-24 21:39:13,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:13,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:39:13,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:39:13,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:39:13,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:39:13,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619600341] [2020-09-24 21:39:13,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:39:13,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:39:13,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094030733] [2020-09-24 21:39:13,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:39:13,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:39:13,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:39:13,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:39:13,693 INFO L87 Difference]: Start difference. First operand 985 states and 1148 transitions. Second operand 13 states. [2020-09-24 21:39:15,036 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2020-09-24 21:39:15,613 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2020-09-24 21:39:15,766 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2020-09-24 21:39:16,082 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2020-09-24 21:39:17,958 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2020-09-24 21:39:20,951 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-09-24 21:39:21,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:39:21,572 INFO L93 Difference]: Finished difference Result 2792 states and 3410 transitions. [2020-09-24 21:39:21,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-24 21:39:21,572 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 173 [2020-09-24 21:39:21,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:39:21,581 INFO L225 Difference]: With dead ends: 2792 [2020-09-24 21:39:21,581 INFO L226 Difference]: Without dead ends: 1338 [2020-09-24 21:39:21,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=394, Invalid=938, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 21:39:21,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2020-09-24 21:39:21,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1118. [2020-09-24 21:39:21,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1118 states. [2020-09-24 21:39:21,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1286 transitions. [2020-09-24 21:39:21,655 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1286 transitions. Word has length 173 [2020-09-24 21:39:21,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:39:21,655 INFO L479 AbstractCegarLoop]: Abstraction has 1118 states and 1286 transitions. [2020-09-24 21:39:21,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:39:21,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1286 transitions. [2020-09-24 21:39:21,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-24 21:39:21,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:39:21,663 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-09-24 21:39:21,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:39:21,663 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:39:21,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:39:21,664 INFO L82 PathProgramCache]: Analyzing trace with hash -919226278, now seen corresponding path program 1 times [2020-09-24 21:39:21,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:39:21,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707571723] [2020-09-24 21:39:21,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:39:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:21,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:21,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:22,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:24,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:25,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:25,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:26,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:26,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-24 21:39:26,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:39:26,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-24 21:39:26,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:26,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 21:39:26,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:39:26,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 21:39:26,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:39:27,538 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-09-24 21:39:27,761 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2020-09-24 21:39:27,968 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2020-09-24 21:39:28,180 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 46 [2020-09-24 21:39:28,388 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 42 [2020-09-24 21:39:28,556 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 38 [2020-09-24 21:39:28,701 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 32 [2020-09-24 21:39:28,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:39:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:28,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:28,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:28,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:39:28,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:28,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 21:39:28,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:39:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:39:28,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:28,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:39:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:28,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:28,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:28,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:39:28,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:28,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 21:39:28,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:28,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:39:28,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:39:28,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:39:28,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:39:29,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 21:39:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:29,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:29,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:29,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:29,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:39:29,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:39:29,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-24 21:39:29,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:29,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:39:29,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:39:29,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:39:29,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:29,884 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 25 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:39:29,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707571723] [2020-09-24 21:39:29,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:39:29,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 21:39:29,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420472219] [2020-09-24 21:39:29,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 21:39:29,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:39:29,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 21:39:29,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2020-09-24 21:39:29,888 INFO L87 Difference]: Start difference. First operand 1118 states and 1286 transitions. Second operand 23 states. [2020-09-24 21:39:30,584 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-09-24 21:39:31,604 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-09-24 21:39:32,233 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-09-24 21:39:32,928 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 95 [2020-09-24 21:39:33,346 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-09-24 21:39:33,717 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 97 [2020-09-24 21:39:34,183 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 117 [2020-09-24 21:39:34,794 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 92 [2020-09-24 21:39:35,303 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2020-09-24 21:39:35,893 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 113 [2020-09-24 21:39:37,234 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 110 [2020-09-24 21:39:37,398 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-09-24 21:39:38,062 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2020-09-24 21:39:38,580 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 107 [2020-09-24 21:39:39,148 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 104 [2020-09-24 21:39:40,013 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2020-09-24 21:39:41,327 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 99 [2020-09-24 21:39:43,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:39:43,030 INFO L93 Difference]: Finished difference Result 3781 states and 4789 transitions. [2020-09-24 21:39:43,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-09-24 21:39:43,031 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 190 [2020-09-24 21:39:43,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:39:43,046 INFO L225 Difference]: With dead ends: 3781 [2020-09-24 21:39:43,046 INFO L226 Difference]: Without dead ends: 2751 [2020-09-24 21:39:43,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=838, Invalid=2242, Unknown=0, NotChecked=0, Total=3080 [2020-09-24 21:39:43,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2020-09-24 21:39:43,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 2337. [2020-09-24 21:39:43,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2337 states. [2020-09-24 21:39:43,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 2803 transitions. [2020-09-24 21:39:43,135 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 2803 transitions. Word has length 190 [2020-09-24 21:39:43,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:39:43,136 INFO L479 AbstractCegarLoop]: Abstraction has 2337 states and 2803 transitions. [2020-09-24 21:39:43,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 21:39:43,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 2803 transitions. [2020-09-24 21:39:43,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-24 21:39:43,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:39:43,148 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:39:43,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:39:43,149 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:39:43,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:39:43,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1148518826, now seen corresponding path program 1 times [2020-09-24 21:39:43,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:39:43,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511348653] [2020-09-24 21:39:43,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:39:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:43,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:43,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:43,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking...