/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/Problem02_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:42:32,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:42:32,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:42:32,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:42:32,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:42:32,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:42:32,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:42:32,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:42:32,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:42:32,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:42:32,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:42:32,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:42:32,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:42:32,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:42:32,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:42:32,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:42:32,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:42:32,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:42:32,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:42:32,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:42:32,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:42:32,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:42:32,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:42:32,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:42:32,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:42:32,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:42:32,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:42:32,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:42:32,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:42:32,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:42:32,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:42:32,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:42:32,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:42:32,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:42:32,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:42:32,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:42:32,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:42:32,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:42:32,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:42:32,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:42:32,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:42:32,522 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 21:42:32,568 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:42:32,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:42:32,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:42:32,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:42:32,572 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:42:32,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:42:32,572 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:42:32,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:42:32,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:42:32,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:42:32,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:42:32,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:42:32,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:42:32,575 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:42:32,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:42:32,575 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:42:32,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:42:32,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:42:32,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:42:32,576 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:42:32,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:42:32,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:42:32,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:42:32,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:42:32,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:42:32,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:42:32,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:42:32,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:42:32,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:42:32,578 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 21:42:33,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:42:33,062 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:42:33,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:42:33,069 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:42:33,069 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:42:33,070 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label30.c [2020-09-24 21:42:33,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f96685759/c49b475c7dca4b58ae78136552f3cd5c/FLAG79e369a24 [2020-09-24 21:42:33,804 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:42:33,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label30.c [2020-09-24 21:42:33,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f96685759/c49b475c7dca4b58ae78136552f3cd5c/FLAG79e369a24 [2020-09-24 21:42:34,047 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f96685759/c49b475c7dca4b58ae78136552f3cd5c [2020-09-24 21:42:34,062 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:42:34,068 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:42:34,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:42:34,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:42:34,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:42:34,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:42:34" (1/1) ... [2020-09-24 21:42:34,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c6c8a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:34, skipping insertion in model container [2020-09-24 21:42:34,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:42:34" (1/1) ... [2020-09-24 21:42:34,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:42:34,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:42:34,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:42:34,632 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:42:34,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:42:34,910 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:42:34,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:34 WrapperNode [2020-09-24 21:42:34,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:42:34,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:42:34,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:42:34,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:42:34,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:34" (1/1) ... [2020-09-24 21:42:34,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:34" (1/1) ... [2020-09-24 21:42:34,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:34" (1/1) ... [2020-09-24 21:42:34,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:34" (1/1) ... [2020-09-24 21:42:34,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:34" (1/1) ... [2020-09-24 21:42:35,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:34" (1/1) ... [2020-09-24 21:42:35,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:34" (1/1) ... [2020-09-24 21:42:35,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:42:35,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:42:35,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:42:35,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:42:35,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:34" (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 21:42:35,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:42:35,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:42:35,105 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:42:35,105 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:42:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:42:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:42:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:42:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:42:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:42:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:42:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:42:36,523 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:42:36,523 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:42:36,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:42:36 BoogieIcfgContainer [2020-09-24 21:42:36,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:42:36,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:42:36,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:42:36,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:42:36,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:42:34" (1/3) ... [2020-09-24 21:42:36,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a7f1ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:42:36, skipping insertion in model container [2020-09-24 21:42:36,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:34" (2/3) ... [2020-09-24 21:42:36,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a7f1ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:42:36, skipping insertion in model container [2020-09-24 21:42:36,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:42:36" (3/3) ... [2020-09-24 21:42:36,553 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label30.c [2020-09-24 21:42:36,565 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:42:36,582 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:42:36,605 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:42:36,646 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:42:36,647 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:42:36,647 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:42:36,647 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:42:36,647 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:42:36,647 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:42:36,647 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:42:36,648 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:42:36,679 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 21:42:36,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 21:42:36,702 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:36,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:42:36,704 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:36,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:36,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1296859345, now seen corresponding path program 1 times [2020-09-24 21:42:36,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:36,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910945495] [2020-09-24 21:42:36,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:37,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:37,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:37,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:38,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:39,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:40,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:41,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:42,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:42,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-24 21:42:42,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:42:42,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-24 21:42:42,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:42,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 21:42:42,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 21:42:42,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 21:42:42,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 21:42:42,956 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 35 [2020-09-24 21:42:43,105 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 34 [2020-09-24 21:42:43,233 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2020-09-24 21:42:43,367 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 29 [2020-09-24 21:42:43,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:43,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:43,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:43,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:43,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:43,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 21:42:43,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:43,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:42:43,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:43,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:43,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:43,928 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 21:42:43,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910945495] [2020-09-24 21:42:43,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:42:43,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-24 21:42:43,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673480089] [2020-09-24 21:42:43,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 21:42:43,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:43,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 21:42:43,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:42:43,959 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 17 states. [2020-09-24 21:42:44,572 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-09-24 21:42:44,808 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-24 21:42:45,048 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-24 21:42:45,366 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2020-09-24 21:42:45,693 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2020-09-24 21:42:46,249 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-24 21:42:46,608 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2020-09-24 21:42:47,103 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2020-09-24 21:42:48,475 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2020-09-24 21:42:48,727 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2020-09-24 21:42:49,048 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-24 21:42:49,932 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-09-24 21:42:50,415 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2020-09-24 21:42:50,661 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-09-24 21:42:51,812 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-09-24 21:42:52,352 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-09-24 21:42:55,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:42:55,436 INFO L93 Difference]: Finished difference Result 1871 states and 2663 transitions. [2020-09-24 21:42:55,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 21:42:55,438 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 154 [2020-09-24 21:42:55,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:42:55,467 INFO L225 Difference]: With dead ends: 1871 [2020-09-24 21:42:55,468 INFO L226 Difference]: Without dead ends: 1243 [2020-09-24 21:42:55,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=578, Invalid=1584, Unknown=0, NotChecked=0, Total=2162 [2020-09-24 21:42:55,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2020-09-24 21:42:55,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1076. [2020-09-24 21:42:55,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-09-24 21:42:55,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1296 transitions. [2020-09-24 21:42:55,618 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1296 transitions. Word has length 154 [2020-09-24 21:42:55,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:42:55,620 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1296 transitions. [2020-09-24 21:42:55,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 21:42:55,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1296 transitions. [2020-09-24 21:42:55,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-24 21:42:55,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:55,649 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 21:42:55,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:42:55,649 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:55,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:55,650 INFO L82 PathProgramCache]: Analyzing trace with hash 692863818, now seen corresponding path program 1 times [2020-09-24 21:42:55,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:55,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886169834] [2020-09-24 21:42:55,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:55,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:55,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:55,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:56,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:57,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:57,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:57,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:58,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:00,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:00,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-24 21:43:00,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:43:00,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 21:43:00,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:00,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 21:43:00,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 21:43:00,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-24 21:43:00,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:43:01,409 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2020-09-24 21:43:01,636 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2020-09-24 21:43:01,858 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2020-09-24 21:43:02,088 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2020-09-24 21:43:02,299 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 39 [2020-09-24 21:43:02,522 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 40 [2020-09-24 21:43:02,796 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 37 [2020-09-24 21:43:03,005 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 35 [2020-09-24 21:43:03,181 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 29 [2020-09-24 21:43:03,337 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 26 [2020-09-24 21:43:03,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:43:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:03,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:03,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:03,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:43:03,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:43:03,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 21:43:03,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:43:03,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:43:03,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:43:03,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:43:03,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:43:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:03,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:03,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:03,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:43:03,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:43:03,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 21:43:03,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:43:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:43:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:43:03,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:43:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:43:03,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886169834] [2020-09-24 21:43:03,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:43:03,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 21:43:03,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204841143] [2020-09-24 21:43:03,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 21:43:03,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:43:03,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 21:43:03,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2020-09-24 21:43:03,922 INFO L87 Difference]: Start difference. First operand 1076 states and 1296 transitions. Second operand 23 states. [2020-09-24 21:43:04,776 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-09-24 21:43:05,217 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2020-09-24 21:43:07,287 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 101 [2020-09-24 21:43:07,976 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 101 [2020-09-24 21:43:08,432 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 98 [2020-09-24 21:43:09,074 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 98 [2020-09-24 21:43:09,912 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 96 [2020-09-24 21:43:10,291 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 95 [2020-09-24 21:43:10,702 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-09-24 21:43:11,081 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-09-24 21:43:11,438 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 90 [2020-09-24 21:43:12,025 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2020-09-24 21:43:12,368 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-24 21:43:13,396 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-09-24 21:43:13,810 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2020-09-24 21:43:14,192 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2020-09-24 21:43:14,603 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2020-09-24 21:43:15,255 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2020-09-24 21:43:15,940 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 77 [2020-09-24 21:43:18,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:43:18,608 INFO L93 Difference]: Finished difference Result 2562 states and 3133 transitions. [2020-09-24 21:43:18,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-09-24 21:43:18,609 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 171 [2020-09-24 21:43:18,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:43:18,630 INFO L225 Difference]: With dead ends: 2562 [2020-09-24 21:43:18,630 INFO L226 Difference]: Without dead ends: 1566 [2020-09-24 21:43:18,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=846, Invalid=2124, Unknown=0, NotChecked=0, Total=2970 [2020-09-24 21:43:18,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2020-09-24 21:43:18,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1340. [2020-09-24 21:43:18,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2020-09-24 21:43:18,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1626 transitions. [2020-09-24 21:43:18,724 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1626 transitions. Word has length 171 [2020-09-24 21:43:18,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:43:18,724 INFO L479 AbstractCegarLoop]: Abstraction has 1340 states and 1626 transitions. [2020-09-24 21:43:18,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 21:43:18,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1626 transitions. [2020-09-24 21:43:18,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-24 21:43:18,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:43:18,731 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:43:18,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:43:18,731 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:43:18,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:43:18,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1009453005, now seen corresponding path program 1 times [2020-09-24 21:43:18,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:43:18,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053853252] [2020-09-24 21:43:18,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:43:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:18,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:18,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:19,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:19,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:20,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:20,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:22,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:23,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:23,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:23,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:23,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:23,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:23,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 21:43:23,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:43:23,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 21:43:23,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:43:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:43:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 21:43:23,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:43:24,383 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-09-24 21:43:24,528 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2020-09-24 21:43:24,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:43:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:24,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:24,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:24,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:43:24,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:43:24,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 21:43:24,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:24,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:43:24,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:43:24,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:43:24,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:43:24,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:43:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:25,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:25,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:25,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:25,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:43:25,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:43:25,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 21:43:25,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:25,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:43:25,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:43:25,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:43:25,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:43:25,329 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:43:25,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053853252] [2020-09-24 21:43:25,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:43:25,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 21:43:25,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556839476] [2020-09-24 21:43:25,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 21:43:25,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:43:25,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 21:43:25,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2020-09-24 21:43:25,332 INFO L87 Difference]: Start difference. First operand 1340 states and 1626 transitions. Second operand 20 states. [2020-09-24 21:43:25,814 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-09-24 21:43:26,030 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-09-24 21:43:26,317 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101