/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:06:00,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:06:00,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:06:00,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:06:00,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:06:00,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:06:00,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:06:00,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:06:00,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:06:00,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:06:00,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:06:00,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:06:00,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:06:00,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:06:00,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:06:00,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:06:00,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:06:00,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:06:00,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:06:00,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:06:00,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:06:00,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:06:00,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:06:00,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:06:00,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:06:00,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:06:00,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:06:00,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:06:00,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:06:00,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:06:00,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:06:00,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:06:00,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:06:00,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:06:00,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:06:00,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:06:00,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:06:00,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:06:00,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:06:00,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:06:00,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:06:00,516 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 10:06:00,543 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:06:00,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:06:00,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:06:00,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:06:00,545 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:06:00,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:06:00,545 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:06:00,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:06:00,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:06:00,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:06:00,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:06:00,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:06:00,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:06:00,547 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:06:00,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:06:00,547 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:06:00,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:06:00,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:06:00,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:06:00,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:06:00,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:06:00,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:06:00,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:06:00,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:06:00,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:06:00,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:06:00,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:06:00,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:06:00,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:06:00,550 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:06:01,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:06:01,049 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:06:01,054 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:06:01,056 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:06:01,056 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:06:01,057 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-09-25 10:06:01,154 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/190eedfa1/6ebabdc018dd4725b9fb9672cce393df/FLAG53eddeaec [2020-09-25 10:06:01,837 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:06:01,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-09-25 10:06:01,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/190eedfa1/6ebabdc018dd4725b9fb9672cce393df/FLAG53eddeaec [2020-09-25 10:06:02,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/190eedfa1/6ebabdc018dd4725b9fb9672cce393df [2020-09-25 10:06:02,074 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:06:02,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:06:02,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:02,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:06:02,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:06:02,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:02,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e09f978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02, skipping insertion in model container [2020-09-25 10:06:02,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:02,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:06:02,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:06:02,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:02,633 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:06:02,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:02,890 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:06:02,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02 WrapperNode [2020-09-25 10:06:02,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:02,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:06:02,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:06:02,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:06:02,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:02,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:02,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:02,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:02,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:02,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:03,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:03,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:06:03,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:06:03,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:06:03,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:06:03,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (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 10:06:03,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:06:03,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:06:03,122 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:06:03,122 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:06:03,123 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:06:03,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:06:03,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:06:03,123 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:06:03,123 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:06:03,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:06:03,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:06:04,431 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:06:04,431 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:06:04,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:04 BoogieIcfgContainer [2020-09-25 10:06:04,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:06:04,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:06:04,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:06:04,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:06:04,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:06:02" (1/3) ... [2020-09-25 10:06:04,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bfb3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:04, skipping insertion in model container [2020-09-25 10:06:04,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (2/3) ... [2020-09-25 10:06:04,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bfb3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:04, skipping insertion in model container [2020-09-25 10:06:04,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:04" (3/3) ... [2020-09-25 10:06:04,452 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label06.c [2020-09-25 10:06:04,464 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:06:04,476 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:06:04,502 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:06:04,539 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:06:04,539 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:06:04,539 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:06:04,540 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:06:04,540 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:06:04,540 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:06:04,540 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:06:04,540 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:06:04,573 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 10:06:04,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 10:06:04,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:04,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:04,599 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:04,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:04,612 INFO L82 PathProgramCache]: Analyzing trace with hash 730138415, now seen corresponding path program 1 times [2020-09-25 10:06:04,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:04,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907351763] [2020-09-25 10:06:04,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:05,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:05,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:06,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:06,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:07,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:08,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:08,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:09,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:09,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:09,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:09,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 10:06:09,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:06:09,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 10:06:09,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:09,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:09,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:09,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:06:09,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 10:06:09,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:06:10,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:10,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:10,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:10,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:10,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:10,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 10:06:10,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:10,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:10,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:10,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:10,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:06:10,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:10,308 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 10:06:10,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907351763] [2020-09-25 10:06:10,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:06:10,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:06:10,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423185051] [2020-09-25 10:06:10,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:06:10,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:10,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:06:10,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:06:10,345 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 10:06:12,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:12,603 INFO L93 Difference]: Finished difference Result 1235 states and 1633 transitions. [2020-09-25 10:06:12,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:06:12,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-09-25 10:06:12,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:12,669 INFO L225 Difference]: With dead ends: 1235 [2020-09-25 10:06:12,670 INFO L226 Difference]: Without dead ends: 661 [2020-09-25 10:06:12,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:06:12,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-25 10:06:12,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 605. [2020-09-25 10:06:12,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-25 10:06:12,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 715 transitions. [2020-09-25 10:06:12,785 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 715 transitions. Word has length 152 [2020-09-25 10:06:12,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:12,787 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 715 transitions. [2020-09-25 10:06:12,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:06:12,787 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 715 transitions. [2020-09-25 10:06:12,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 10:06:12,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:12,798 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] [2020-09-25 10:06:12,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:06:12,798 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:12,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:12,801 INFO L82 PathProgramCache]: Analyzing trace with hash -490165684, now seen corresponding path program 1 times [2020-09-25 10:06:12,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:12,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105299830] [2020-09-25 10:06:12,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:12,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:12,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:13,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:13,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:14,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:16,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:17,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:17,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:17,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 10:06:17,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:06:17,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 10:06:17,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:17,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:06:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:06:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-09-25 10:06:17,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:18,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:18,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:18,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:18,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:18,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:18,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 10:06:18,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:18,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:18,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:18,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:18,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:06:18,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 10:06:18,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:18,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:18,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:18,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:18,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:06:18,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:18,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 10:06:18,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:18,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:18,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:18,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:18,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:06:18,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:06:18,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105299830] [2020-09-25 10:06:18,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:18,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:06:18,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876928053] [2020-09-25 10:06:18,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:06:18,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:18,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:06:18,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:06:18,308 INFO L87 Difference]: Start difference. First operand 605 states and 715 transitions. Second operand 6 states. [2020-09-25 10:06:20,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:20,427 INFO L93 Difference]: Finished difference Result 1509 states and 1862 transitions. [2020-09-25 10:06:20,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:06:20,427 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2020-09-25 10:06:20,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:20,456 INFO L225 Difference]: With dead ends: 1509 [2020-09-25 10:06:20,458 INFO L226 Difference]: Without dead ends: 928 [2020-09-25 10:06:20,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:06:20,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2020-09-25 10:06:20,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 895. [2020-09-25 10:06:20,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 895 states. [2020-09-25 10:06:20,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1090 transitions. [2020-09-25 10:06:20,531 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1090 transitions. Word has length 169 [2020-09-25 10:06:20,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:20,533 INFO L479 AbstractCegarLoop]: Abstraction has 895 states and 1090 transitions. [2020-09-25 10:06:20,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:06:20,533 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1090 transitions. [2020-09-25 10:06:20,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 10:06:20,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:20,546 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 10:06:20,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:06:20,547 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:20,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:20,548 INFO L82 PathProgramCache]: Analyzing trace with hash -382985798, now seen corresponding path program 1 times [2020-09-25 10:06:20,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:20,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005442259] [2020-09-25 10:06:20,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:20,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:20,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:21,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:21,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:21,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:25,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:25,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-25 10:06:25,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:06:25,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 10:06:25,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:25,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:25,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 10:06:25,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 10:06:25,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 10:06:25,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:26,469 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2020-09-25 10:06:26,690 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 45 [2020-09-25 10:06:26,914 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2020-09-25 10:06:27,132 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 43 [2020-09-25 10:06:27,347 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 42 [2020-09-25 10:06:27,570 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 42 [2020-09-25 10:06:27,768 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 41 [2020-09-25 10:06:27,968 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 40 [2020-09-25 10:06:28,156 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 40 [2020-09-25 10:06:28,329 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 36 [2020-09-25 10:06:28,498 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2020-09-25 10:06:28,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:28,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:28,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:28,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:28,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:28,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:06:28,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:28,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:28,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:28,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:28,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:28,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:28,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:28,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:28,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:28,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:06:28,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:28,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:06:28,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:28,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:28,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:28,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:28,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:28,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:28,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:06:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:28,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:28,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:28,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 10:06:28,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:28,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 10:06:28,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:28,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:28,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:28,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:28,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 10:06:28,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:29,216 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 10:06:29,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005442259] [2020-09-25 10:06:29,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:29,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 10:06:29,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838782967] [2020-09-25 10:06:29,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 10:06:29,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:29,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 10:06:29,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=269, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:06:29,222 INFO L87 Difference]: Start difference. First operand 895 states and 1090 transitions. Second operand 21 states. [2020-09-25 10:06:30,774 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-09-25 10:06:31,062 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-25 10:06:31,319 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-25 10:06:31,533 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-25 10:06:31,727 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-09-25 10:06:31,935 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-09-25 10:06:32,211 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-25 10:06:32,686 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 96 [2020-09-25 10:06:33,178 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 96 [2020-09-25 10:06:33,607 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 96 [2020-09-25 10:06:33,797 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-25 10:06:33,976 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-09-25 10:06:34,314 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 95 [2020-09-25 10:06:34,486 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-25 10:06:34,811 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-25 10:06:35,235 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2020-09-25 10:06:35,900 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2020-09-25 10:06:36,065 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-09-25 10:06:36,412 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2020-09-25 10:06:36,620 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-09-25 10:06:36,957 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 93 [2020-09-25 10:06:37,252 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-09-25 10:06:37,426 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-09-25 10:06:37,955 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 93 [2020-09-25 10:06:38,427 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2020-09-25 10:06:38,742 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-09-25 10:06:39,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:39,784 INFO L93 Difference]: Finished difference Result 2454 states and 3173 transitions. [2020-09-25 10:06:39,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-25 10:06:39,785 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 214 [2020-09-25 10:06:39,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:39,802 INFO L225 Difference]: With dead ends: 2454 [2020-09-25 10:06:39,803 INFO L226 Difference]: Without dead ends: 1583 [2020-09-25 10:06:39,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=839, Invalid=1711, Unknown=0, NotChecked=0, Total=2550 [2020-09-25 10:06:39,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2020-09-25 10:06:39,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1295. [2020-09-25 10:06:39,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1295 states. [2020-09-25 10:06:39,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1570 transitions. [2020-09-25 10:06:39,881 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1570 transitions. Word has length 214 [2020-09-25 10:06:39,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:39,881 INFO L479 AbstractCegarLoop]: Abstraction has 1295 states and 1570 transitions. [2020-09-25 10:06:39,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 10:06:39,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1570 transitions. [2020-09-25 10:06:39,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 10:06:39,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:39,889 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 10:06:39,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:06:39,890 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:39,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:39,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1871469781, now seen corresponding path program 1 times [2020-09-25 10:06:39,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:39,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191786192] [2020-09-25 10:06:39,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:39,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:40,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:40,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:40,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:40,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:41,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:42,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:42,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:43,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:43,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:44,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:44,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:44,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:44,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 10:06:44,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 10:06:44,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 10:06:44,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:44,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:44,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:06:44,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:06:44,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-09-25 10:06:44,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:45,316 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2020-09-25 10:06:45,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:45,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:45,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:45,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:45,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:45,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 10:06:45,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:45,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:45,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:45,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:06:45,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:45,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:45,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:45,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:45,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:45,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:06:45,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:45,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 10:06:45,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:45,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:45,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:45,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:45,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:06:45,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:45,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:06:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:45,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:45,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:45,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:45,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 10:06:45,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:45,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 10:06:45,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:45,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:45,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:06:45,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:45,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 10:06:45,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:46,113 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 10:06:46,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191786192] [2020-09-25 10:06:46,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:46,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:06:46,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741643902] [2020-09-25 10:06:46,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:06:46,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:46,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:06:46,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:06:46,116 INFO L87 Difference]: Start difference. First operand 1295 states and 1570 transitions. Second operand 11 states. [2020-09-25 10:06:50,355 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-09-25 10:06:50,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:50,598 INFO L93 Difference]: Finished difference Result 3398 states and 4360 transitions. [2020-09-25 10:06:50,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 10:06:50,600 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 229 [2020-09-25 10:06:50,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:50,609 INFO L225 Difference]: With dead ends: 3398 [2020-09-25 10:06:50,609 INFO L226 Difference]: Without dead ends: 1406 [2020-09-25 10:06:50,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:06:50,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2020-09-25 10:06:50,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1244. [2020-09-25 10:06:50,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1244 states. [2020-09-25 10:06:50,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1468 transitions. [2020-09-25 10:06:50,660 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1468 transitions. Word has length 229 [2020-09-25 10:06:50,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:50,661 INFO L479 AbstractCegarLoop]: Abstraction has 1244 states and 1468 transitions. [2020-09-25 10:06:50,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:06:50,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1468 transitions. [2020-09-25 10:06:50,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 10:06:50,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:50,667 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 10:06:50,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:06:50,668 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:50,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:50,668 INFO L82 PathProgramCache]: Analyzing trace with hash -292831527, now seen corresponding path program 1 times [2020-09-25 10:06:50,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:50,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977845981] [2020-09-25 10:06:50,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:50,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:50,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking...