/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=BIGGEST --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_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:31:44,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:31:44,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:31:44,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:31:44,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:31:44,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:31:44,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:31:44,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:31:44,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:31:44,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:31:44,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:31:44,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:31:44,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:31:44,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:31:44,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:31:44,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:31:44,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:31:44,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:31:44,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:31:44,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:31:44,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:31:44,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:31:44,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:31:44,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:31:44,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:31:44,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:31:44,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:31:44,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:31:44,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:31:44,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:31:44,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:31:44,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:31:44,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:31:44,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:31:44,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:31:44,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:31:44,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:31:44,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:31:44,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:31:44,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:31:44,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:31:44,486 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 20:31:44,522 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:31:44,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:31:44,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:31:44,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:31:44,527 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:31:44,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:31:44,528 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:31:44,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:31:44,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:31:44,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:31:44,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:31:44,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:31:44,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:31:44,530 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:31:44,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:31:44,531 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:31:44,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:31:44,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:31:44,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:31:44,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:31:44,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:31:44,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:31:44,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:31:44,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:31:44,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:31:44,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:31:44,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:31:44,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:31:44,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:31:44,535 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:31:44,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:31:45,007 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:31:45,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:31:45,016 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:31:45,017 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:31:45,019 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-09-24 20:31:45,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55b722bf8/fda6c8fe389241c0a56cb7ab0ad69413/FLAG681bbd817 [2020-09-24 20:31:45,796 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:31:45,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-09-24 20:31:45,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55b722bf8/fda6c8fe389241c0a56cb7ab0ad69413/FLAG681bbd817 [2020-09-24 20:31:46,015 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55b722bf8/fda6c8fe389241c0a56cb7ab0ad69413 [2020-09-24 20:31:46,030 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:31:46,037 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:31:46,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:31:46,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:31:46,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:31:46,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:31:46" (1/1) ... [2020-09-24 20:31:46,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5402282b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46, skipping insertion in model container [2020-09-24 20:31:46,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:31:46" (1/1) ... [2020-09-24 20:31:46,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:31:46,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:31:46,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:31:46,595 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:31:46,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:31:46,875 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:31:46,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46 WrapperNode [2020-09-24 20:31:46,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:31:46,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:31:46,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:31:46,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:31:46,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46" (1/1) ... [2020-09-24 20:31:46,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46" (1/1) ... [2020-09-24 20:31:46,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46" (1/1) ... [2020-09-24 20:31:46,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46" (1/1) ... [2020-09-24 20:31:47,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46" (1/1) ... [2020-09-24 20:31:47,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46" (1/1) ... [2020-09-24 20:31:47,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46" (1/1) ... [2020-09-24 20:31:47,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:31:47,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:31:47,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:31:47,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:31:47,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46" (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 20:31:47,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:31:47,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:31:47,159 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 20:31:47,159 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:31:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 20:31:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:31:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:31:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 20:31:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:31:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:31:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:31:48,879 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:31:48,880 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 20:31:48,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:31:48 BoogieIcfgContainer [2020-09-24 20:31:48,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:31:48,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:31:48,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:31:48,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:31:48,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:31:46" (1/3) ... [2020-09-24 20:31:48,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebc44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:31:48, skipping insertion in model container [2020-09-24 20:31:48,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46" (2/3) ... [2020-09-24 20:31:48,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebc44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:31:48, skipping insertion in model container [2020-09-24 20:31:48,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:31:48" (3/3) ... [2020-09-24 20:31:48,899 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label41.c [2020-09-24 20:31:48,911 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:31:48,923 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:31:48,947 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:31:48,983 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:31:48,984 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:31:48,984 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:31:48,984 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:31:48,984 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:31:48,984 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:31:48,985 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:31:48,985 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:31:49,018 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 20:31:49,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-09-24 20:31:49,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:31:49,039 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] [2020-09-24 20:31:49,040 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:31:49,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:31:49,048 INFO L82 PathProgramCache]: Analyzing trace with hash -672460611, now seen corresponding path program 1 times [2020-09-24 20:31:49,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:31:49,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417672838] [2020-09-24 20:31:49,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:31:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:31:49,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:31:49,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:31:49,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:31:50,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:31:51,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:31:53,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:31:53,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:31:54,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:31:54,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-24 20:31:54,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:31:54,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-24 20:31:54,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:31:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-09-24 20:31:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:31:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 20:31:54,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 20:31:55,236 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-09-24 20:31:55,379 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2020-09-24 20:31:55,654 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-09-24 20:31:55,895 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-09-24 20:31:56,094 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2020-09-24 20:31:56,301 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-09-24 20:31:56,596 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2020-09-24 20:31:56,887 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2020-09-24 20:31:57,149 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2020-09-24 20:31:57,424 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2020-09-24 20:31:57,657 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-09-24 20:31:57,895 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-09-24 20:31:58,163 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-09-24 20:31:58,371 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-09-24 20:31:58,599 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-09-24 20:31:58,823 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-09-24 20:31:58,997 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-09-24 20:31:59,373 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2020-09-24 20:31:59,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:31:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:31:59,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:00,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:32:00,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 20:32:00,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:32:00,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 20:32:00,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:32:00,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:32:00,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:32:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:32:00,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:32:00,451 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 20:32:00,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417672838] [2020-09-24 20:32:00,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:32:00,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2020-09-24 20:32:00,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877820584] [2020-09-24 20:32:00,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-09-24 20:32:00,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:32:00,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-09-24 20:32:00,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=810, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 20:32:00,483 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 35 states. [2020-09-24 20:32:00,972 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-09-24 20:32:01,185 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-09-24 20:32:01,451 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-09-24 20:32:01,821 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-09-24 20:32:01,977 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-09-24 20:32:02,303 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-09-24 20:32:02,810 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2020-09-24 20:32:03,328 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:32:03,728 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96 [2020-09-24 20:32:04,200 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96 [2020-09-24 20:32:04,601 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:32:05,162 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:32:05,842 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:32:06,022 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-09-24 20:32:06,424 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:32:06,644 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-09-24 20:32:07,055 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:32:07,576 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:32:08,053 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:32:08,281 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-24 20:32:08,627 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-09-24 20:32:08,915 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-24 20:32:09,329 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:32:09,799 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:10,118 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2020-09-24 20:32:10,682 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-09-24 20:32:11,029 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-09-24 20:32:11,377 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2020-09-24 20:32:11,568 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-24 20:32:12,036 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-09-24 20:32:12,347 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-09-24 20:32:12,579 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-24 20:32:12,955 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:13,324 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-09-24 20:32:13,834 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2020-09-24 20:32:14,186 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:14,424 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-09-24 20:32:14,783 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-09-24 20:32:14,916 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-09-24 20:32:15,306 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:15,637 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-09-24 20:32:15,945 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2020-09-24 20:32:16,269 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-09-24 20:32:16,791 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-09-24 20:32:16,949 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-24 20:32:17,136 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-24 20:32:17,354 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-09-24 20:32:17,741 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-09-24 20:32:18,106 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-09-24 20:32:18,325 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-09-24 20:32:18,667 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:18,937 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:19,101 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-09-24 20:32:19,264 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-09-24 20:32:19,680 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:19,905 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 20:32:20,228 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-24 20:32:20,630 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:21,258 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:21,523 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2020-09-24 20:32:21,714 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-24 20:32:22,134 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-09-24 20:32:22,494 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 20:32:23,208 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:23,493 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-09-24 20:32:23,784 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-09-24 20:32:23,996 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 20:32:24,216 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-09-24 20:32:24,468 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-09-24 20:32:24,690 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 20:32:25,033 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 20:32:25,404 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 20:32:25,742 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2020-09-24 20:32:26,129 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2020-09-24 20:32:26,380 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 20:32:26,669 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 20:32:27,102 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-09-24 20:32:27,324 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-09-24 20:32:27,581 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 20:32:27,851 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-09-24 20:32:28,240 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-09-24 20:32:28,473 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-24 20:32:28,733 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-24 20:32:28,948 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-24 20:32:29,271 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-24 20:32:29,443 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-09-24 20:32:29,706 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-24 20:32:30,102 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-24 20:32:31,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:32:31,360 INFO L93 Difference]: Finished difference Result 1967 states and 2792 transitions. [2020-09-24 20:32:31,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-09-24 20:32:31,362 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 113 [2020-09-24 20:32:31,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:32:31,401 INFO L225 Difference]: With dead ends: 1967 [2020-09-24 20:32:31,401 INFO L226 Difference]: Without dead ends: 1349 [2020-09-24 20:32:31,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7128 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=5030, Invalid=14992, Unknown=0, NotChecked=0, Total=20022 [2020-09-24 20:32:31,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2020-09-24 20:32:31,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1147. [2020-09-24 20:32:31,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2020-09-24 20:32:31,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1395 transitions. [2020-09-24 20:32:31,573 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1395 transitions. Word has length 113 [2020-09-24 20:32:31,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:32:31,574 INFO L479 AbstractCegarLoop]: Abstraction has 1147 states and 1395 transitions. [2020-09-24 20:32:31,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-09-24 20:32:31,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1395 transitions. [2020-09-24 20:32:31,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-24 20:32:31,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:32:31,596 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] [2020-09-24 20:32:31,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:32:31,598 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:32:31,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:32:31,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1425470158, now seen corresponding path program 1 times [2020-09-24 20:32:31,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:32:31,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863697497] [2020-09-24 20:32:31,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:32:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:32:31,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:31,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:31,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:33,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:32:33,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 20:32:33,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:32:33,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1605 [2020-09-24 20:32:33,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:32:33,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:32:33,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:32:33,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 20:32:33,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:32:33,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:32:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:32:33,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:33,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:32:33,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 20:32:33,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:32:33,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 20:32:33,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:32:33,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:32:33,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:32:33,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:32:33,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:32:33,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 20:32:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:32:33,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:33,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:33,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:32:33,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:32:33,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:32:33,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 20:32:33,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:32:33,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:32:33,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 20:32:33,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:32:33,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:32:33,685 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 20:32:33,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863697497] [2020-09-24 20:32:33,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:32:33,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 20:32:33,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651179979] [2020-09-24 20:32:33,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:32:33,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:32:33,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:32:33,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:32:33,693 INFO L87 Difference]: Start difference. First operand 1147 states and 1395 transitions. Second operand 6 states. [2020-09-24 20:32:35,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:32:35,462 INFO L93 Difference]: Finished difference Result 3183 states and 4047 transitions. [2020-09-24 20:32:35,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:32:35,462 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-09-24 20:32:35,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:32:35,477 INFO L225 Difference]: With dead ends: 3183 [2020-09-24 20:32:35,478 INFO L226 Difference]: Without dead ends: 2048 [2020-09-24 20:32:35,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:32:35,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2020-09-24 20:32:35,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 1827. [2020-09-24 20:32:35,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1827 states. [2020-09-24 20:32:35,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2217 transitions. [2020-09-24 20:32:35,554 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2217 transitions. Word has length 134 [2020-09-24 20:32:35,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:32:35,555 INFO L479 AbstractCegarLoop]: Abstraction has 1827 states and 2217 transitions. [2020-09-24 20:32:35,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:32:35,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2217 transitions. [2020-09-24 20:32:35,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-24 20:32:35,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:32:35,563 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:32:35,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:32:35,564 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:32:35,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:32:35,564 INFO L82 PathProgramCache]: Analyzing trace with hash 229978703, now seen corresponding path program 1 times [2020-09-24 20:32:35,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:32:35,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673323144] [2020-09-24 20:32:35,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:32:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:32:35,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:35,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:36,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:37,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:37,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:40,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:40,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:40,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:32:40,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-24 20:32:40,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:32:40,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-24 20:32:40,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:32:40,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:32:40,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-09-24 20:32:40,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 20:32:40,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2