/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=NARROWEST --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_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:09:23,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:09:23,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:09:23,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:09:23,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:09:23,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:09:23,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:09:23,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:09:23,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:09:23,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:09:23,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:09:23,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:09:23,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:09:23,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:09:23,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:09:23,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:09:23,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:09:23,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:09:23,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:09:23,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:09:23,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:09:23,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:09:23,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:09:23,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:09:23,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:09:23,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:09:23,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:09:23,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:09:23,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:09:23,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:09:23,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:09:23,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:09:23,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:09:23,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:09:23,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:09:23,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:09:23,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:09:23,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:09:23,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:09:23,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:09:23,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:09:23,492 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 [2020-09-25 02:09:23,549 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:09:23,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:09:23,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:09:23,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:09:23,551 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:09:23,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:09:23,553 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:09:23,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:09:23,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:09:23,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:09:23,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:09:23,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:09:23,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:09:23,555 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:09:23,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:09:23,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:09:23,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:09:23,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:09:23,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:09:23,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:09:23,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:09:23,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:09:23,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:09:23,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:09:23,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:09:23,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:09:23,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:09:23,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:09:23,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:09:23,559 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:09:24,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:09:24,046 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:09:24,051 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:09:24,053 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:09:24,053 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:09:24,054 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label43.c [2020-09-25 02:09:24,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8d809648/e3159500a63547d8902246bb8d37a028/FLAGfc37ed56a [2020-09-25 02:09:24,742 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:09:24,743 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label43.c [2020-09-25 02:09:24,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8d809648/e3159500a63547d8902246bb8d37a028/FLAGfc37ed56a [2020-09-25 02:09:25,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8d809648/e3159500a63547d8902246bb8d37a028 [2020-09-25 02:09:25,024 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:09:25,028 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:09:25,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:09:25,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:09:25,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:09:25,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:09:25" (1/1) ... [2020-09-25 02:09:25,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd4ce29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:09:25, skipping insertion in model container [2020-09-25 02:09:25,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:09:25" (1/1) ... [2020-09-25 02:09:25,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:09:25,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:09:25,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:09:25,692 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:09:25,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:09:25,803 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:09:25,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:09:25 WrapperNode [2020-09-25 02:09:25,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:09:25,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:09:25,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:09:25,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:09:25,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:09:25" (1/1) ... [2020-09-25 02:09:25,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:09:25" (1/1) ... [2020-09-25 02:09:25,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:09:25" (1/1) ... [2020-09-25 02:09:25,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:09:25" (1/1) ... [2020-09-25 02:09:25,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:09:25" (1/1) ... [2020-09-25 02:09:25,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:09:25" (1/1) ... [2020-09-25 02:09:25,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:09:25" (1/1) ... [2020-09-25 02:09:25,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:09:25,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:09:25,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:09:25,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:09:25,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:09:25" (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 [2020-09-25 02:09:26,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:09:26,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:09:26,026 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 02:09:26,026 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:09:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 02:09:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:09:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:09:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 02:09:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:09:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:09:26,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:09:27,466 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:09:27,466 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 02:09:27,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:09:27 BoogieIcfgContainer [2020-09-25 02:09:27,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:09:27,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:09:27,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:09:27,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:09:27,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:09:25" (1/3) ... [2020-09-25 02:09:27,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f458e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:09:27, skipping insertion in model container [2020-09-25 02:09:27,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:09:25" (2/3) ... [2020-09-25 02:09:27,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f458e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:09:27, skipping insertion in model container [2020-09-25 02:09:27,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:09:27" (3/3) ... [2020-09-25 02:09:27,492 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label43.c [2020-09-25 02:09:27,504 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:09:27,520 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:09:27,539 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:09:27,580 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:09:27,580 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:09:27,580 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:09:27,581 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:09:27,581 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:09:27,581 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:09:27,581 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:09:27,581 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:09:27,618 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 02:09:27,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 02:09:27,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:09:27,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:09:27,645 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:09:27,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:09:27,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1333625535, now seen corresponding path program 1 times [2020-09-25 02:09:27,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:09:27,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770742548] [2020-09-25 02:09:27,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:09:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:09:28,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:28,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:28,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:29,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:29,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:31,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:32,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:32,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:09:32,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 02:09:32,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 02:09:32,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 02:09:32,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:09:32,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 02:09:32,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 02:09:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 02:09:32,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 02:09:33,605 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-09-25 02:09:33,733 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-09-25 02:09:33,856 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2020-09-25 02:09:33,980 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-09-25 02:09:34,112 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 34 [2020-09-25 02:09:34,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:09:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:09:34,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:34,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:09:34,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 02:09:34,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:09:34,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 02:09:34,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:09:34,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:09:34,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:09:34,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:09:34,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:09:35,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:09:35,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770742548] [2020-09-25 02:09:35,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:09:35,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-09-25 02:09:35,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373783671] [2020-09-25 02:09:35,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 02:09:35,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:09:35,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 02:09:35,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2020-09-25 02:09:35,332 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 23 states. [2020-09-25 02:09:36,013 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-25 02:09:36,357 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-09-25 02:09:36,682 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-09-25 02:09:37,088 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-09-25 02:09:37,479 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-09-25 02:09:38,194 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-09-25 02:09:38,593 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-09-25 02:09:38,767 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-09-25 02:09:39,152 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2020-09-25 02:09:39,530 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2020-09-25 02:09:40,230 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-09-25 02:09:40,868 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-09-25 02:09:41,127 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-09-25 02:09:43,121 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-09-25 02:09:43,740 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-09-25 02:09:44,190 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-25 02:09:44,732 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-25 02:09:45,080 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-25 02:09:45,540 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-25 02:09:45,838 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2020-09-25 02:09:46,314 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-09-25 02:09:46,756 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-09-25 02:09:47,055 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-09-25 02:09:47,454 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2020-09-25 02:09:48,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:09:48,515 INFO L93 Difference]: Finished difference Result 1920 states and 2784 transitions. [2020-09-25 02:09:48,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-25 02:09:48,518 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 156 [2020-09-25 02:09:48,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:09:48,553 INFO L225 Difference]: With dead ends: 1920 [2020-09-25 02:09:48,553 INFO L226 Difference]: Without dead ends: 1302 [2020-09-25 02:09:48,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1032, Invalid=2274, Unknown=0, NotChecked=0, Total=3306 [2020-09-25 02:09:48,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2020-09-25 02:09:48,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1046. [2020-09-25 02:09:48,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-09-25 02:09:48,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1214 transitions. [2020-09-25 02:09:48,709 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1214 transitions. Word has length 156 [2020-09-25 02:09:48,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:09:48,710 INFO L479 AbstractCegarLoop]: Abstraction has 1046 states and 1214 transitions. [2020-09-25 02:09:48,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 02:09:48,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1214 transitions. [2020-09-25 02:09:48,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 02:09:48,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:09:48,721 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:09:48,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:09:48,722 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:09:48,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:09:48,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1479520420, now seen corresponding path program 1 times [2020-09-25 02:09:48,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:09:48,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794148835] [2020-09-25 02:09:48,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:09:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:09:48,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:48,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:49,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:49,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:51,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:53,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:53,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:53,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:09:53,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 02:09:53,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 02:09:53,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 02:09:53,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:09:53,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:09:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 02:09:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 02:09:53,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:09:54,687 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 41 [2020-09-25 02:09:54,877 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 45 [2020-09-25 02:09:55,105 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 45 [2020-09-25 02:09:55,324 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 44 [2020-09-25 02:09:55,560 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 44 [2020-09-25 02:09:55,807 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 45 [2020-09-25 02:09:56,028 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 43 [2020-09-25 02:09:56,195 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 37 [2020-09-25 02:09:56,364 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 36 [2020-09-25 02:09:56,523 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 32 [2020-09-25 02:09:56,675 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 29 [2020-09-25 02:09:56,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:09:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:09:56,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:56,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:09:56,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 02:09:56,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:09:56,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 02:09:56,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:09:56,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:09:56,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:09:56,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:09:56,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:09:56,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 02:09:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:09:56,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:56,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:09:56,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:09:56,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:09:56,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 02:09:56,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:09:56,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:09:56,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:09:56,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:09:56,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:09:57,147 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:09:57,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794148835] [2020-09-25 02:09:57,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:09:57,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 02:09:57,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313223477] [2020-09-25 02:09:57,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 02:09:57,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:09:57,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 02:09:57,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=247, Unknown=0, NotChecked=0, Total=380 [2020-09-25 02:09:57,154 INFO L87 Difference]: Start difference. First operand 1046 states and 1214 transitions. Second operand 20 states. [2020-09-25 02:09:57,608 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-25 02:09:57,773 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-25 02:09:58,113 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 95 [2020-09-25 02:09:58,354 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-09-25 02:09:58,763 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2020-09-25 02:09:59,430 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2020-09-25 02:10:00,011 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-09-25 02:10:00,260 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-25 02:10:01,069 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-09-25 02:10:01,617 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2020-09-25 02:10:02,017 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-09-25 02:10:02,330 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-25 02:10:02,756 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 93 [2020-09-25 02:10:03,142 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2020-09-25 02:10:03,304 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-25 02:10:03,633 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2020-09-25 02:10:03,954 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2020-09-25 02:10:04,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:10:04,954 INFO L93 Difference]: Finished difference Result 2288 states and 2752 transitions. [2020-09-25 02:10:04,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 02:10:04,955 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 173 [2020-09-25 02:10:04,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:10:04,971 INFO L225 Difference]: With dead ends: 2288 [2020-09-25 02:10:04,972 INFO L226 Difference]: Without dead ends: 1266 [2020-09-25 02:10:04,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=570, Invalid=1152, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 02:10:04,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2020-09-25 02:10:05,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1214. [2020-09-25 02:10:05,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1214 states. [2020-09-25 02:10:05,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1411 transitions. [2020-09-25 02:10:05,059 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1411 transitions. Word has length 173 [2020-09-25 02:10:05,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:10:05,060 INFO L479 AbstractCegarLoop]: Abstraction has 1214 states and 1411 transitions. [2020-09-25 02:10:05,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 02:10:05,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1411 transitions. [2020-09-25 02:10:05,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 02:10:05,070 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:10:05,070 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:10:05,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:10:05,071 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:10:05,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:10:05,072 INFO L82 PathProgramCache]: Analyzing trace with hash -531931122, now seen corresponding path program 1 times [2020-09-25 02:10:05,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:10:05,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571590228] [2020-09-25 02:10:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:10:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:10:05,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:05,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:05,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:05,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:07,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:07,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:07,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:09,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:09,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:09,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:10,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:10,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:10:10,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 02:10:10,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 02:10:10,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5170 [2020-09-25 02:10:10,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:10:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:10:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 02:10:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 02:10:10,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:10:10,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:10:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:10:10,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:10,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:10:10,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 02:10:10,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:10:10,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:10:10,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:10:10,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:10:10,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:10:10,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:10:10,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:10:10,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 02:10:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:10:10,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:10,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:10:10,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 02:10:10,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:10:10,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 02:10:10,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:10:10,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:10:10,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:10:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:10:10,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:10:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:10:10,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571590228] [2020-09-25 02:10:10,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:10:10,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 02:10:10,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453234639] [2020-09-25 02:10:10,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:10:10,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:10:10,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:10:10,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:10:10,916 INFO L87 Difference]: Start difference. First operand 1214 states and 1411 transitions. Second operand 8 states. [2020-09-25 02:10:14,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:10:14,057 INFO L93 Difference]: Finished difference Result 2665 states and 3221 transitions. [2020-09-25 02:10:14,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:10:14,058 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 177 [2020-09-25 02:10:14,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:10:14,067 INFO L225 Difference]: With dead ends: 2665 [2020-09-25 02:10:14,068 INFO L226 Difference]: Without dead ends: 1215 [2020-09-25 02:10:14,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:10:14,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2020-09-25 02:10:14,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1202. [2020-09-25 02:10:14,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1202 states. [2020-09-25 02:10:14,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1378 transitions. [2020-09-25 02:10:14,107 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1378 transitions. Word has length 177 [2020-09-25 02:10:14,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:10:14,107 INFO L479 AbstractCegarLoop]: Abstraction has 1202 states and 1378 transitions. [2020-09-25 02:10:14,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:10:14,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1378 transitions. [2020-09-25 02:10:14,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 02:10:14,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:10:14,113 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:10:14,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:10:14,113 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:10:14,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:10:14,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1350825617, now seen corresponding path program 1 times [2020-09-25 02:10:14,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:10:14,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922710126] [2020-09-25 02:10:14,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:10:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:10:14,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:14,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:14,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:14,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:15,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:15,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:15,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking...