/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=0.2 --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/Problem10_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:19:07,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:19:07,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:19:07,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:19:07,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:19:07,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:19:07,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:19:07,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:19:07,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:19:07,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:19:07,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:19:07,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:19:07,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:19:07,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:19:07,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:19:07,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:19:07,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:19:07,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:19:07,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:19:07,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:19:07,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:19:07,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:19:07,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:19:07,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:19:07,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:19:07,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:19:07,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:19:07,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:19:07,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:19:07,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:19:07,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:19:07,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:19:07,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:19:07,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:19:07,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:19:07,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:19:07,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:19:07,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:19:07,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:19:07,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:19:07,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:19:07,474 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 11:19:07,501 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:19:07,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:19:07,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:19:07,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:19:07,503 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:19:07,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:19:07,504 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:19:07,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:19:07,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:19:07,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:19:07,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:19:07,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:19:07,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:19:07,505 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:19:07,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:19:07,506 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:19:07,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:19:07,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:19:07,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:19:07,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:19:07,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:19:07,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:19:07,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:19:07,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:19:07,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:19:07,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:19:07,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:19:07,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:19:07,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:19:07,509 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:19:07,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:19:07,992 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:19:07,997 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:19:07,998 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:19:08,000 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:19:08,001 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-09-25 11:19:08,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e7c9fe06/67c9696900534bba8252aed19f428088/FLAG123737b5d [2020-09-25 11:19:08,720 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:19:08,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-09-25 11:19:08,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e7c9fe06/67c9696900534bba8252aed19f428088/FLAG123737b5d [2020-09-25 11:19:08,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e7c9fe06/67c9696900534bba8252aed19f428088 [2020-09-25 11:19:09,001 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:19:09,006 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:19:09,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:09,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:19:09,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:19:09,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:08" (1/1) ... [2020-09-25 11:19:09,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:09, skipping insertion in model container [2020-09-25 11:19:09,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:08" (1/1) ... [2020-09-25 11:19:09,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:19:09,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:19:09,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:09,688 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:19:09,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:09,861 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:19:09,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:09 WrapperNode [2020-09-25 11:19:09,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:09,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:19:09,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:19:09,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:19:09,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:09" (1/1) ... [2020-09-25 11:19:09,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:09" (1/1) ... [2020-09-25 11:19:09,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:09" (1/1) ... [2020-09-25 11:19:09,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:09" (1/1) ... [2020-09-25 11:19:09,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:09" (1/1) ... [2020-09-25 11:19:09,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:09" (1/1) ... [2020-09-25 11:19:09,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:09" (1/1) ... [2020-09-25 11:19:09,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:19:09,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:19:09,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:19:09,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:19:09,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:09" (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 11:19:10,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:19:10,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:19:10,063 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:19:10,063 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:19:10,063 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:19:10,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:19:10,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:19:10,064 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:19:10,064 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:19:10,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:19:10,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:19:11,493 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:19:11,494 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:19:11,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:11 BoogieIcfgContainer [2020-09-25 11:19:11,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:19:11,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:19:11,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:19:11,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:19:11,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:19:08" (1/3) ... [2020-09-25 11:19:11,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4862e907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:11, skipping insertion in model container [2020-09-25 11:19:11,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:09" (2/3) ... [2020-09-25 11:19:11,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4862e907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:11, skipping insertion in model container [2020-09-25 11:19:11,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:11" (3/3) ... [2020-09-25 11:19:11,512 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label31.c [2020-09-25 11:19:11,523 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:19:11,535 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:19:11,557 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:19:11,595 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:19:11,595 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:19:11,595 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:19:11,595 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:19:11,595 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:19:11,596 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:19:11,596 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:19:11,596 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:19:11,629 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:19:11,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 11:19:11,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:11,642 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] [2020-09-25 11:19:11,643 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:11,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:11,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1703669257, now seen corresponding path program 1 times [2020-09-25 11:19:11,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:11,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103752725] [2020-09-25 11:19:11,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:11,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:12,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:12,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:12,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:12,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:19:12,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:19:12,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 977 [2020-09-25 11:19:12,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:12,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:12,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:12,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:12,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 11:19:12,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:19:12,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:12,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:12,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:12,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:12,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:12,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:19:12,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:12,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:12,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:13,014 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 11:19:13,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103752725] [2020-09-25 11:19:13,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:13,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:19:13,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422150053] [2020-09-25 11:19:13,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:19:13,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:13,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:19:13,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:19:13,046 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:19:15,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:15,025 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 11:19:15,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:19:15,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-09-25 11:19:15,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:15,051 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 11:19:15,052 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 11:19:15,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:19:15,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 11:19:15,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 11:19:15,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 11:19:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 11:19:15,153 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 62 [2020-09-25 11:19:15,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:15,154 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 11:19:15,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:19:15,154 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 11:19:15,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 11:19:15,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:15,162 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, 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] [2020-09-25 11:19:15,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:19:15,163 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:15,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:15,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1996719641, now seen corresponding path program 1 times [2020-09-25 11:19:15,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:15,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204931657] [2020-09-25 11:19:15,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:15,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:18,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:18,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 11:19:18,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:19:18,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3679 [2020-09-25 11:19:18,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:18,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:18,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:19:18,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:19:18,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 11:19:18,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:18,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:18,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:18,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:18,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:18,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:18,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:19:18,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:18,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:18,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:18,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:18,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:19:18,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:19,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:19,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:19,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:19,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:19,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:19,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:19,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-25 11:19:19,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:19,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:19,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:19,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:19,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:19:19,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:19:19,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204931657] [2020-09-25 11:19:19,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:19,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:19:19,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610525646] [2020-09-25 11:19:19,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:19:19,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:19,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:19:19,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:19:19,286 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 11:19:20,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:20,807 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 11:19:20,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:19:20,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 11:19:20,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:20,815 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 11:19:20,816 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 11:19:20,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:19:20,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 11:19:20,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 11:19:20,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 11:19:20,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 11:19:20,851 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 141 [2020-09-25 11:19:20,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:20,852 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 11:19:20,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:19:20,852 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 11:19:20,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 11:19:20,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:20,859 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, 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] [2020-09-25 11:19:20,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:19:20,860 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:20,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:20,860 INFO L82 PathProgramCache]: Analyzing trace with hash -617946683, now seen corresponding path program 1 times [2020-09-25 11:19:20,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:20,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682722323] [2020-09-25 11:19:20,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:20,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:20,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:21,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:21,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:22,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:22,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:22,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:22,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:25,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:25,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 11:19:25,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:19:25,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 11:19:25,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:25,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:25,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:19:25,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:25,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 11:19:25,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 11:19:26,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:26,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:26,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:26,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:26,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:26,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:19:26,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:26,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:26,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:26,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:26,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:26,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:26,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:26,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:26,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:26,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 11:19:26,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:26,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:26,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:26,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:26,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:19:26,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:26,383 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 7 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:26,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682722323] [2020-09-25 11:19:26,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:26,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:19:26,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957891680] [2020-09-25 11:19:26,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:19:26,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:26,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:19:26,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:19:26,387 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 8 states. [2020-09-25 11:19:29,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:29,697 INFO L93 Difference]: Finished difference Result 1984 states and 2586 transitions. [2020-09-25 11:19:29,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:19:29,698 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2020-09-25 11:19:29,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:29,709 INFO L225 Difference]: With dead ends: 1984 [2020-09-25 11:19:29,710 INFO L226 Difference]: Without dead ends: 1454 [2020-09-25 11:19:29,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:19:29,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2020-09-25 11:19:29,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1361. [2020-09-25 11:19:29,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1361 states. [2020-09-25 11:19:29,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1737 transitions. [2020-09-25 11:19:29,777 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1737 transitions. Word has length 151 [2020-09-25 11:19:29,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:29,779 INFO L479 AbstractCegarLoop]: Abstraction has 1361 states and 1737 transitions. [2020-09-25 11:19:29,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:19:29,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1737 transitions. [2020-09-25 11:19:29,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 11:19:29,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:29,792 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, 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] [2020-09-25 11:19:29,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:19:29,793 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:29,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:29,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1755229107, now seen corresponding path program 1 times [2020-09-25 11:19:29,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:29,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875159323] [2020-09-25 11:19:29,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:29,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:29,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:30,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:31,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:31,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 11:19:31,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:19:31,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2053 [2020-09-25 11:19:31,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:31,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:19:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 11:19:31,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:31,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:31,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:31,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:31,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:31,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:31,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:19:31,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:31,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:31,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:31,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:31,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:19:31,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:31,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:32,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:32,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:32,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 11:19:32,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:32,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 11:19:32,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:32,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:32,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:32,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 11:19:32,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:32,210 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:32,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875159323] [2020-09-25 11:19:32,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:32,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:19:32,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140171823] [2020-09-25 11:19:32,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:19:32,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:32,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:19:32,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:19:32,217 INFO L87 Difference]: Start difference. First operand 1361 states and 1737 transitions. Second operand 7 states. [2020-09-25 11:19:34,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:34,508 INFO L93 Difference]: Finished difference Result 3423 states and 4611 transitions. [2020-09-25 11:19:34,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:19:34,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-09-25 11:19:34,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:34,524 INFO L225 Difference]: With dead ends: 3423 [2020-09-25 11:19:34,524 INFO L226 Difference]: Without dead ends: 2227 [2020-09-25 11:19:34,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:19:34,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2020-09-25 11:19:34,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2153. [2020-09-25 11:19:34,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2020-09-25 11:19:34,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2640 transitions. [2020-09-25 11:19:34,619 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2640 transitions. Word has length 153 [2020-09-25 11:19:34,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:34,619 INFO L479 AbstractCegarLoop]: Abstraction has 2153 states and 2640 transitions. [2020-09-25 11:19:34,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:19:34,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2640 transitions. [2020-09-25 11:19:34,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 11:19:34,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:34,630 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:34,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:19:34,631 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:34,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:34,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1872349141, now seen corresponding path program 1 times [2020-09-25 11:19:34,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:34,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565098311] [2020-09-25 11:19:34,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:34,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:34,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:36,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:38,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:39,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:39,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 11:19:39,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:19:39,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 11:19:39,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:39,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:39,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:19:39,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 11:19:39,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:39,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:39,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:39,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:39,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:39,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:39,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:19:39,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:39,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:39,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:39,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:39,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:39,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:39,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:39,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:39,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:39,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:39,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 11:19:39,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:39,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:19:39,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:40,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:19:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:40,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:40,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:40,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:40,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:40,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 11:19:40,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:40,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:40,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:19:40,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:19:40,453 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 95 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:19:40,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565098311] [2020-09-25 11:19:40,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:40,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:19:40,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956527779] [2020-09-25 11:19:40,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:19:40,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:40,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:19:40,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:19:40,459 INFO L87 Difference]: Start difference. First operand 2153 states and 2640 transitions. Second operand 10 states. [2020-09-25 11:19:44,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:44,072 INFO L93 Difference]: Finished difference Result 4727 states and 5963 transitions. [2020-09-25 11:19:44,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 11:19:44,073 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 230 [2020-09-25 11:19:44,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:44,094 INFO L225 Difference]: With dead ends: 4727 [2020-09-25 11:19:44,095 INFO L226 Difference]: Without dead ends: 2739 [2020-09-25 11:19:44,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:19:44,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2020-09-25 11:19:44,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2693. [2020-09-25 11:19:44,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2693 states. [2020-09-25 11:19:44,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2693 states to 2693 states and 3313 transitions. [2020-09-25 11:19:44,221 INFO L78 Accepts]: Start accepts. Automaton has 2693 states and 3313 transitions. Word has length 230 [2020-09-25 11:19:44,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:44,222 INFO L479 AbstractCegarLoop]: Abstraction has 2693 states and 3313 transitions. [2020-09-25 11:19:44,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:19:44,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2693 states and 3313 transitions. [2020-09-25 11:19:44,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-09-25 11:19:44,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:44,227 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:44,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:19:44,228 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:44,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:44,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1975871710, now seen corresponding path program 1 times [2020-09-25 11:19:44,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:44,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756854183] [2020-09-25 11:19:44,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:44,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:44,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:44,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:44,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:44,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:46,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:47,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:49,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:49,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-09-25 11:19:49,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:19:49,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 11:19:49,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:49,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:19:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:19:49,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 11:19:49,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:49,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:49,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:49,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:49,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:49,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:49,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:19:49,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:49,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:19:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:19:49,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:49,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:49,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:49,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:49,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:49,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:49,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:49,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 11:19:49,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:49,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:49,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:49,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:49,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 11:19:49,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:49,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 11:19:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:49,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:49,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:50,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:50,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:19:50,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:50,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-09-25 11:19:50,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:50,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:50,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:50,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:50,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:19:50,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:50,362 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 11:19:50,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756854183] [2020-09-25 11:19:50,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:50,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:19:50,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144358523] [2020-09-25 11:19:50,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:19:50,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:50,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:19:50,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:19:50,366 INFO L87 Difference]: Start difference. First operand 2693 states and 3313 transitions. Second operand 10 states. [2020-09-25 11:19:53,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:53,863 INFO L93 Difference]: Finished difference Result 6039 states and 7741 transitions. [2020-09-25 11:19:53,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:19:53,868 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 234 [2020-09-25 11:19:53,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:53,885 INFO L225 Difference]: With dead ends: 6039 [2020-09-25 11:19:53,886 INFO L226 Difference]: Without dead ends: 3497 [2020-09-25 11:19:53,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:19:53,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3497 states. [2020-09-25 11:19:53,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3497 to 3308. [2020-09-25 11:19:53,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3308 states. [2020-09-25 11:19:53,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3308 states to 3308 states and 4064 transitions. [2020-09-25 11:19:53,976 INFO L78 Accepts]: Start accepts. Automaton has 3308 states and 4064 transitions. Word has length 234 [2020-09-25 11:19:53,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:53,976 INFO L479 AbstractCegarLoop]: Abstraction has 3308 states and 4064 transitions. [2020-09-25 11:19:53,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:19:53,977 INFO L276 IsEmpty]: Start isEmpty. Operand 3308 states and 4064 transitions. [2020-09-25 11:19:53,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 11:19:53,982 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:53,983 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 11:19:53,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:19:53,983 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:53,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:53,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1455418807, now seen corresponding path program 1 times [2020-09-25 11:19:53,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:53,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946890] [2020-09-25 11:19:53,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:54,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:54,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:54,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:54,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:55,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:55,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking...