/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:26:10,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:26:10,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:26:10,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:26:10,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:26:10,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:26:10,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:26:10,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:26:10,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:26:10,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:26:10,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:26:10,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:26:10,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:26:10,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:26:10,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:26:10,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:26:10,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:26:10,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:26:10,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:26:10,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:26:10,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:26:10,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:26:10,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:26:10,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:26:10,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:26:10,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:26:10,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:26:10,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:26:10,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:26:10,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:26:10,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:26:10,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:26:10,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:26:10,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:26:10,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:26:10,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:26:10,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:26:10,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:26:10,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:26:10,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:26:10,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:26:10,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:26:10,534 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:26:10,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:26:10,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:26:10,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:26:10,536 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:26:10,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:26:10,537 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:26:10,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:26:10,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:26:10,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:26:10,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:26:10,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:26:10,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:26:10,538 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:26:10,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:26:10,538 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:26:10,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:26:10,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:26:10,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:26:10,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:26:10,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:26:10,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:26:10,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:26:10,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:26:10,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:26:10,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:26:10,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:26:10,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:26:10,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:26:10,541 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:26:11,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:26:11,033 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:26:11,039 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:26:11,042 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:26:11,044 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:26:11,045 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-24 19:26:11,121 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb11554ea/b45b4d401b9a4afb91ec8d42bb8de0fe/FLAG588dd4ec9 [2020-09-24 19:26:11,723 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:26:11,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-24 19:26:11,737 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb11554ea/b45b4d401b9a4afb91ec8d42bb8de0fe/FLAG588dd4ec9 [2020-09-24 19:26:11,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb11554ea/b45b4d401b9a4afb91ec8d42bb8de0fe [2020-09-24 19:26:11,987 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:26:11,993 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:26:11,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:26:11,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:26:12,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:26:12,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:26:11" (1/1) ... [2020-09-24 19:26:12,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69d5d771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:12, skipping insertion in model container [2020-09-24 19:26:12,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:26:11" (1/1) ... [2020-09-24 19:26:12,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:26:12,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:26:12,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:26:12,601 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:26:12,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:26:12,836 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:26:12,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:12 WrapperNode [2020-09-24 19:26:12,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:26:12,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:26:12,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:26:12,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:26:12,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:12" (1/1) ... [2020-09-24 19:26:12,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:12" (1/1) ... [2020-09-24 19:26:12,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:12" (1/1) ... [2020-09-24 19:26:12,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:12" (1/1) ... [2020-09-24 19:26:12,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:12" (1/1) ... [2020-09-24 19:26:12,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:12" (1/1) ... [2020-09-24 19:26:12,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:12" (1/1) ... [2020-09-24 19:26:12,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:26:12,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:26:12,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:26:12,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:26:12,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:26:13,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:26:13,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:26:13,027 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:26:13,027 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:26:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:26:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:26:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:26:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:26:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:26:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:26:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:26:14,343 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:26:14,344 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:26:14,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:26:14 BoogieIcfgContainer [2020-09-24 19:26:14,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:26:14,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:26:14,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:26:14,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:26:14,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:26:11" (1/3) ... [2020-09-24 19:26:14,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20dbd542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:26:14, skipping insertion in model container [2020-09-24 19:26:14,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:12" (2/3) ... [2020-09-24 19:26:14,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20dbd542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:26:14, skipping insertion in model container [2020-09-24 19:26:14,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:26:14" (3/3) ... [2020-09-24 19:26:14,364 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label53.c [2020-09-24 19:26:14,376 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:26:14,388 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:26:14,412 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:26:14,447 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:26:14,447 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:26:14,448 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:26:14,448 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:26:14,448 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:26:14,448 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:26:14,448 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:26:14,448 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:26:14,484 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 19:26:14,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 19:26:14,507 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:14,509 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] [2020-09-24 19:26:14,509 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:14,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:14,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1414748743, now seen corresponding path program 1 times [2020-09-24 19:26:14,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:14,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767998602] [2020-09-24 19:26:14,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:14,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:15,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:15,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:15,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-24 19:26:15,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:26:15,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-24 19:26:15,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:15,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:26:15,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:26:15,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 19:26:15,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:26:16,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:16,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:16,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:16,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:16,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:16,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 19:26:16,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:16,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 19:26:16,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:16,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:26:16,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767998602] [2020-09-24 19:26:16,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:26:16,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:26:16,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809256694] [2020-09-24 19:26:16,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:26:16,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:16,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:26:16,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:26:16,182 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-24 19:26:18,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:18,391 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-24 19:26:18,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:26:18,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-24 19:26:18,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:18,423 INFO L225 Difference]: With dead ends: 1259 [2020-09-24 19:26:18,423 INFO L226 Difference]: Without dead ends: 685 [2020-09-24 19:26:18,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:26:18,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-24 19:26:18,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-24 19:26:18,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-24 19:26:18,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-24 19:26:18,538 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 142 [2020-09-24 19:26:18,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:18,539 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-24 19:26:18,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:26:18,540 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-24 19:26:18,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-24 19:26:18,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:18,553 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:18,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:26:18,553 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:18,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:18,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1681317672, now seen corresponding path program 1 times [2020-09-24 19:26:18,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:18,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146170542] [2020-09-24 19:26:18,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:18,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:18,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:19,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:19,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:19,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:19,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 19:26:19,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:19,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1075 [2020-09-24 19:26:19,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:19,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:26:19,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:26:19,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 19:26:19,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:19,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:19,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:19,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:19,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:19,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:19,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 19:26:19,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:19,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:19,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:19,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 19:26:19,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 19:26:19,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:19,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:19,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:19,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:26:19,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:19,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 19:26:19,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:19,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:19,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:19,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:26:19,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 19:26:19,980 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:26:19,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146170542] [2020-09-24 19:26:19,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:26:19,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:26:19,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742278460] [2020-09-24 19:26:19,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:19,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:19,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:19,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:19,986 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 7 states. [2020-09-24 19:26:21,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:21,968 INFO L93 Difference]: Finished difference Result 1400 states and 1721 transitions. [2020-09-24 19:26:21,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:26:21,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-09-24 19:26:21,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:21,975 INFO L225 Difference]: With dead ends: 1400 [2020-09-24 19:26:21,976 INFO L226 Difference]: Without dead ends: 821 [2020-09-24 19:26:21,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:26:21,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2020-09-24 19:26:22,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 759. [2020-09-24 19:26:22,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2020-09-24 19:26:22,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 924 transitions. [2020-09-24 19:26:22,019 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 924 transitions. Word has length 163 [2020-09-24 19:26:22,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:22,019 INFO L479 AbstractCegarLoop]: Abstraction has 759 states and 924 transitions. [2020-09-24 19:26:22,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:22,020 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 924 transitions. [2020-09-24 19:26:22,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-24 19:26:22,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:22,028 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:22,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:26:22,028 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:22,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:22,029 INFO L82 PathProgramCache]: Analyzing trace with hash -769516074, now seen corresponding path program 1 times [2020-09-24 19:26:22,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:22,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001671559] [2020-09-24 19:26:22,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:22,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:22,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:22,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:22,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:23,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:23,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 19:26:23,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:23,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-24 19:26:23,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:23,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:23,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 19:26:23,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 19:26:23,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:23,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:23,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:23,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:23,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:23,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:23,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:26:23,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:23,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:23,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:23,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:23,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:23,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:23,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:23,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:23,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:26:23,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:23,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 19:26:23,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:23,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:23,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:23,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:26:23,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:23,355 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:26:23,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001671559] [2020-09-24 19:26:23,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:23,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:26:23,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970986659] [2020-09-24 19:26:23,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:26:23,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:23,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:26:23,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:26:23,358 INFO L87 Difference]: Start difference. First operand 759 states and 924 transitions. Second operand 5 states. [2020-09-24 19:26:25,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:25,305 INFO L93 Difference]: Finished difference Result 1958 states and 2494 transitions. [2020-09-24 19:26:25,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:26:25,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-09-24 19:26:25,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:25,320 INFO L225 Difference]: With dead ends: 1958 [2020-09-24 19:26:25,320 INFO L226 Difference]: Without dead ends: 1223 [2020-09-24 19:26:25,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:26:25,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2020-09-24 19:26:25,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1053. [2020-09-24 19:26:25,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1053 states. [2020-09-24 19:26:25,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1274 transitions. [2020-09-24 19:26:25,363 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1274 transitions. Word has length 163 [2020-09-24 19:26:25,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:25,364 INFO L479 AbstractCegarLoop]: Abstraction has 1053 states and 1274 transitions. [2020-09-24 19:26:25,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:26:25,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1274 transitions. [2020-09-24 19:26:25,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 19:26:25,369 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:25,370 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:25,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:26:25,370 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:25,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:25,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1302141170, now seen corresponding path program 1 times [2020-09-24 19:26:25,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:25,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221062785] [2020-09-24 19:26:25,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:25,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:25,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:25,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:26,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:26,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:26,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-24 19:26:26,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:26,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-24 19:26:26,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:26,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:26,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-24 19:26:26,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 19:26:26,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:26,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:26,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:26,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:26,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:26,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:26,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:26:26,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:26,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:26,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:26,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:26,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:26,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:26,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:26,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:26,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 19:26:26,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:26,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 19:26:26,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:26,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:26,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:26,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 19:26:26,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:26:26,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221062785] [2020-09-24 19:26:26,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:26,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:26:26,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868768611] [2020-09-24 19:26:26,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:26:26,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:26,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:26:26,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:26:26,750 INFO L87 Difference]: Start difference. First operand 1053 states and 1274 transitions. Second operand 5 states. [2020-09-24 19:26:28,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:28,640 INFO L93 Difference]: Finished difference Result 2828 states and 3543 transitions. [2020-09-24 19:26:28,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:26:28,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-09-24 19:26:28,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:28,650 INFO L225 Difference]: With dead ends: 2828 [2020-09-24 19:26:28,651 INFO L226 Difference]: Without dead ends: 1651 [2020-09-24 19:26:28,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:26:28,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2020-09-24 19:26:28,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1616. [2020-09-24 19:26:28,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1616 states. [2020-09-24 19:26:28,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 1978 transitions. [2020-09-24 19:26:28,704 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 1978 transitions. Word has length 177 [2020-09-24 19:26:28,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:28,705 INFO L479 AbstractCegarLoop]: Abstraction has 1616 states and 1978 transitions. [2020-09-24 19:26:28,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:26:28,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 1978 transitions. [2020-09-24 19:26:28,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-24 19:26:28,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:28,713 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:26:28,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:26:28,713 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:28,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:28,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1218194432, now seen corresponding path program 1 times [2020-09-24 19:26:28,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:28,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369828778] [2020-09-24 19:26:28,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:28,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:28,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:29,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:29,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:29,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:29,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-24 19:26:29,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:29,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-24 19:26:29,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:29,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:29,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:26:29,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 19:26:29,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:29,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:29,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:29,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:29,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:29,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:29,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:26:29,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:29,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:29,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:29,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:29,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:29,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:29,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:29,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:29,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:26:29,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:29,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 19:26:29,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:29,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:29,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:29,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:26:29,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:29,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:26:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:29,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:30,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:30,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 19:26:30,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:30,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 19:26:30,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:30,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:26:30,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:30,207 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:30,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369828778] [2020-09-24 19:26:30,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:30,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:30,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185188106] [2020-09-24 19:26:30,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:30,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:30,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:30,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:30,216 INFO L87 Difference]: Start difference. First operand 1616 states and 1978 transitions. Second operand 7 states. [2020-09-24 19:26:33,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:33,938 INFO L93 Difference]: Finished difference Result 4760 states and 6251 transitions. [2020-09-24 19:26:33,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:26:33,939 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2020-09-24 19:26:33,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:33,957 INFO L225 Difference]: With dead ends: 4760 [2020-09-24 19:26:33,958 INFO L226 Difference]: Without dead ends: 2959 [2020-09-24 19:26:33,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:26:33,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-09-24 19:26:34,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 2651. [2020-09-24 19:26:34,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2651 states. [2020-09-24 19:26:34,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 3249 transitions. [2020-09-24 19:26:34,061 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 3249 transitions. Word has length 188 [2020-09-24 19:26:34,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:34,061 INFO L479 AbstractCegarLoop]: Abstraction has 2651 states and 3249 transitions. [2020-09-24 19:26:34,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:34,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 3249 transitions. [2020-09-24 19:26:34,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-24 19:26:34,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:34,073 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:26:34,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:26:34,073 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:34,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:34,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1783880041, now seen corresponding path program 1 times [2020-09-24 19:26:34,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:34,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942656309] [2020-09-24 19:26:34,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:34,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:34,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:34,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:34,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:34,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:34,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:34,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:35,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:35,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-24 19:26:35,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 19:26:35,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-09-24 19:26:35,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:35,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:26:35,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 19:26:35,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 19:26:35,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:35,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:35,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:35,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:35,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:35,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:35,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:26:35,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:35,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:35,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:35,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:35,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:35,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:35,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:35,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:35,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:26:35,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:35,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 19:26:35,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:35,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:26:35,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:35,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:26:35,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:35,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 19:26:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:35,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:35,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:35,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 19:26:35,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:35,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 19:26:35,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:35,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:35,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:35,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:26:35,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:35,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942656309] [2020-09-24 19:26:35,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:35,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:26:35,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964471781] [2020-09-24 19:26:35,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:35,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:35,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:35,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:35,512 INFO L87 Difference]: Start difference. First operand 2651 states and 3249 transitions. Second operand 8 states. [2020-09-24 19:26:38,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:38,972 INFO L93 Difference]: Finished difference Result 6127 states and 7508 transitions. [2020-09-24 19:26:38,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:26:38,976 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 193 [2020-09-24 19:26:38,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:38,993 INFO L225 Difference]: With dead ends: 6127 [2020-09-24 19:26:38,993 INFO L226 Difference]: Without dead ends: 3718 [2020-09-24 19:26:39,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:26:39,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3718 states. [2020-09-24 19:26:39,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3718 to 3402. [2020-09-24 19:26:39,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3402 states. [2020-09-24 19:26:39,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 3917 transitions. [2020-09-24 19:26:39,091 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 3917 transitions. Word has length 193 [2020-09-24 19:26:39,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:39,092 INFO L479 AbstractCegarLoop]: Abstraction has 3402 states and 3917 transitions. [2020-09-24 19:26:39,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:26:39,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 3917 transitions. [2020-09-24 19:26:39,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-24 19:26:39,103 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:39,103 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:39,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:26:39,104 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:39,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:39,104 INFO L82 PathProgramCache]: Analyzing trace with hash 598363460, now seen corresponding path program 1 times [2020-09-24 19:26:39,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:39,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909579390] [2020-09-24 19:26:39,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:39,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:39,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:39,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:39,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:40,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:40,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:40,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-24 19:26:40,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:26:40,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1034 [2020-09-24 19:26:40,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:40,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:26:40,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 19:26:40,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 19:26:40,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:40,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:40,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:40,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:40,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:40,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:40,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:26:40,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:40,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:40,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:40,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:40,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:40,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:40,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:40,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:40,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:40,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 19:26:40,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:40,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:26:40,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:40,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:26:40,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:40,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 19:26:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:40,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:40,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:40,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 19:26:40,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:40,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 19:26:40,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:40,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:40,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:40,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:26:40,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:40,591 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:40,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909579390] [2020-09-24 19:26:40,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:40,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:26:40,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087288989] [2020-09-24 19:26:40,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:40,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:40,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:40,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:40,595 INFO L87 Difference]: Start difference. First operand 3402 states and 3917 transitions. Second operand 8 states. [2020-09-24 19:26:43,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:43,077 INFO L93 Difference]: Finished difference Result 6922 states and 8014 transitions. [2020-09-24 19:26:43,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 19:26:43,080 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2020-09-24 19:26:43,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:43,095 INFO L225 Difference]: With dead ends: 6922 [2020-09-24 19:26:43,096 INFO L226 Difference]: Without dead ends: 3554 [2020-09-24 19:26:43,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:26:43,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3554 states. [2020-09-24 19:26:43,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3554 to 2112. [2020-09-24 19:26:43,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2112 states. [2020-09-24 19:26:43,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 2358 transitions. [2020-09-24 19:26:43,171 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 2358 transitions. Word has length 196 [2020-09-24 19:26:43,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:43,172 INFO L479 AbstractCegarLoop]: Abstraction has 2112 states and 2358 transitions. [2020-09-24 19:26:43,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:26:43,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 2358 transitions. [2020-09-24 19:26:43,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-24 19:26:43,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:43,180 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] [2020-09-24 19:26:43,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:26:43,181 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:43,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:43,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1971437169, now seen corresponding path program 1 times [2020-09-24 19:26:43,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:43,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305754118] [2020-09-24 19:26:43,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:43,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:43,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:43,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:44,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:44,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-24 19:26:44,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:44,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-09-24 19:26:44,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:44,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 19:26:44,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 19:26:44,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:44,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:44,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:44,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:44,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:44,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:44,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:26:44,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:44,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:44,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:44,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:44,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:44,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:44,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:44,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:44,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:26:44,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:44,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:26:44,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:44,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:44,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:44,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 19:26:44,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:44,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 19:26:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:44,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:44,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:44,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:26:44,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:44,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-24 19:26:44,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:44,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:44,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:44,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 19:26:44,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:44,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305754118] [2020-09-24 19:26:44,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:44,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:44,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931541613] [2020-09-24 19:26:44,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:44,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:44,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:44,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:44,692 INFO L87 Difference]: Start difference. First operand 2112 states and 2358 transitions. Second operand 7 states. [2020-09-24 19:26:46,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:46,756 INFO L93 Difference]: Finished difference Result 5388 states and 6223 transitions. [2020-09-24 19:26:46,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:26:46,760 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-09-24 19:26:46,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:46,775 INFO L225 Difference]: With dead ends: 5388 [2020-09-24 19:26:46,775 INFO L226 Difference]: Without dead ends: 3300 [2020-09-24 19:26:46,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:26:46,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2020-09-24 19:26:46,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 3038. [2020-09-24 19:26:46,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3038 states. [2020-09-24 19:26:46,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3038 states to 3038 states and 3446 transitions. [2020-09-24 19:26:46,864 INFO L78 Accepts]: Start accepts. Automaton has 3038 states and 3446 transitions. Word has length 226 [2020-09-24 19:26:46,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:46,864 INFO L479 AbstractCegarLoop]: Abstraction has 3038 states and 3446 transitions. [2020-09-24 19:26:46,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:46,865 INFO L276 IsEmpty]: Start isEmpty. Operand 3038 states and 3446 transitions. [2020-09-24 19:26:46,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-09-24 19:26:46,876 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:46,877 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, 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] [2020-09-24 19:26:46,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:26:46,877 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:46,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:46,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1376145828, now seen corresponding path program 1 times [2020-09-24 19:26:46,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:46,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479180757] [2020-09-24 19:26:46,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:46,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:47,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:47,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:47,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:47,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:47,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-09-24 19:26:47,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:47,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-09-24 19:26:47,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:47,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:47,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-24 19:26:47,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 19:26:47,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:48,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:48,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:48,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:48,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:48,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:48,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:26:48,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:48,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:48,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:48,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:48,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:48,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:48,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:48,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:48,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:26:48,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:48,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 19:26:48,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:48,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:48,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:48,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:26:48,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:48,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 19:26:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:48,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:48,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:48,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:26:48,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:48,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 19:26:48,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:48,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:48,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 19:26:48,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:48,488 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:48,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479180757] [2020-09-24 19:26:48,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:48,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:26:48,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151417864] [2020-09-24 19:26:48,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:48,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:48,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:48,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:48,496 INFO L87 Difference]: Start difference. First operand 3038 states and 3446 transitions. Second operand 8 states. [2020-09-24 19:26:51,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:51,549 INFO L93 Difference]: Finished difference Result 6315 states and 7186 transitions. [2020-09-24 19:26:51,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:26:51,549 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 252 [2020-09-24 19:26:51,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:51,563 INFO L225 Difference]: With dead ends: 6315 [2020-09-24 19:26:51,563 INFO L226 Difference]: Without dead ends: 3442 [2020-09-24 19:26:51,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:26:51,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3442 states. [2020-09-24 19:26:51,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3442 to 3181. [2020-09-24 19:26:51,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3181 states. [2020-09-24 19:26:51,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3181 states to 3181 states and 3488 transitions. [2020-09-24 19:26:51,643 INFO L78 Accepts]: Start accepts. Automaton has 3181 states and 3488 transitions. Word has length 252 [2020-09-24 19:26:51,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:51,643 INFO L479 AbstractCegarLoop]: Abstraction has 3181 states and 3488 transitions. [2020-09-24 19:26:51,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:26:51,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3181 states and 3488 transitions. [2020-09-24 19:26:51,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-24 19:26:51,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:51,658 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:51,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:26:51,658 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:51,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:51,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1536545024, now seen corresponding path program 1 times [2020-09-24 19:26:51,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:51,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82957738] [2020-09-24 19:26:51,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:51,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:51,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:52,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:52,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:52,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:52,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-09-24 19:26:52,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:52,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-09-24 19:26:52,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:52,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:26:52,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-24 19:26:52,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:26:52,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:52,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:52,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:52,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:52,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:52,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:52,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:26:52,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:52,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:52,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:52,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:52,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:52,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:52,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:52,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:52,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:26:52,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:52,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 19:26:52,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:52,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:26:52,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:52,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:26:52,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:53,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 19:26:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:53,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:53,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:53,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:53,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:53,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 19:26:53,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:26:53,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:53,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-24 19:26:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:53,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:53,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:53,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 19:26:53,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:53,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 19:26:53,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:53,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:53,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-24 19:26:53,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:53,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:53,328 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 122 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-09-24 19:26:53,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82957738] [2020-09-24 19:26:53,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:53,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:26:53,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623075216] [2020-09-24 19:26:53,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:53,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:53,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:53,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:53,331 INFO L87 Difference]: Start difference. First operand 3181 states and 3488 transitions. Second operand 8 states. [2020-09-24 19:26:54,678 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-24 19:26:56,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:56,169 INFO L93 Difference]: Finished difference Result 6675 states and 7332 transitions. [2020-09-24 19:26:56,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:26:56,170 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 269 [2020-09-24 19:26:56,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:56,183 INFO L225 Difference]: With dead ends: 6675 [2020-09-24 19:26:56,183 INFO L226 Difference]: Without dead ends: 3510 [2020-09-24 19:26:56,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:26:56,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3510 states. [2020-09-24 19:26:56,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3510 to 3189. [2020-09-24 19:26:56,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3189 states. [2020-09-24 19:26:56,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3189 states to 3189 states and 3474 transitions. [2020-09-24 19:26:56,258 INFO L78 Accepts]: Start accepts. Automaton has 3189 states and 3474 transitions. Word has length 269 [2020-09-24 19:26:56,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:56,259 INFO L479 AbstractCegarLoop]: Abstraction has 3189 states and 3474 transitions. [2020-09-24 19:26:56,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:26:56,259 INFO L276 IsEmpty]: Start isEmpty. Operand 3189 states and 3474 transitions. [2020-09-24 19:26:56,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-09-24 19:26:56,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:56,270 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:56,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:26:56,271 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:56,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:56,271 INFO L82 PathProgramCache]: Analyzing trace with hash -399616140, now seen corresponding path program 1 times [2020-09-24 19:26:56,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:56,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750973883] [2020-09-24 19:26:56,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:56,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:56,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:56,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:57,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:57,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-09-24 19:26:57,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:57,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-24 19:26:57,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-09-24 19:26:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 19:26:57,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:57,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:57,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:57,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:57,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:57,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:57,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:26:57,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:57,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:57,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:57,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:57,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:57,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:57,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:57,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:57,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:26:57,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:57,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:26:57,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:57,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:57,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:57,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:57,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:57,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 19:26:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:57,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:57,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:57,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 19:26:57,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:57,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 19:26:57,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:57,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:57,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:57,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:57,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:57,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-24 19:26:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:57,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:57,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:57,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:26:57,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:57,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 19:26:57,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:57,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:57,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:57,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 19:26:57,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 126 proven. 3 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-24 19:26:57,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750973883] [2020-09-24 19:26:57,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:57,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:26:57,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792126087] [2020-09-24 19:26:57,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:26:57,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:57,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:26:57,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:26:57,868 INFO L87 Difference]: Start difference. First operand 3189 states and 3474 transitions. Second operand 5 states. [2020-09-24 19:26:59,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:59,099 INFO L93 Difference]: Finished difference Result 6673 states and 7291 transitions. [2020-09-24 19:26:59,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:26:59,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 284 [2020-09-24 19:26:59,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:59,109 INFO L225 Difference]: With dead ends: 6673 [2020-09-24 19:26:59,109 INFO L226 Difference]: Without dead ends: 3326 [2020-09-24 19:26:59,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:26:59,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3326 states. [2020-09-24 19:26:59,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3326 to 3305. [2020-09-24 19:26:59,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3305 states. [2020-09-24 19:26:59,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3305 states to 3305 states and 3574 transitions. [2020-09-24 19:26:59,182 INFO L78 Accepts]: Start accepts. Automaton has 3305 states and 3574 transitions. Word has length 284 [2020-09-24 19:26:59,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:59,183 INFO L479 AbstractCegarLoop]: Abstraction has 3305 states and 3574 transitions. [2020-09-24 19:26:59,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:26:59,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3305 states and 3574 transitions. [2020-09-24 19:26:59,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-09-24 19:26:59,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:59,196 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:59,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:26:59,197 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:59,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:59,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1926295866, now seen corresponding path program 1 times [2020-09-24 19:26:59,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:59,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451023796] [2020-09-24 19:26:59,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:59,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:59,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:59,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:59,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:00,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:00,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-09-24 19:27:00,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:27:00,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1047 [2020-09-24 19:27:00,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:27:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-24 19:27:00,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 19:27:00,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:27:00,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:27:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:00,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:00,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:00,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:27:00,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:00,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:27:00,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:00,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:27:00,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:27:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:00,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:00,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:00,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:27:00,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:00,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 19:27:00,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:00,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:27:00,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:00,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 19:27:00,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:00,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 19:27:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:00,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:00,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:00,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 19:27:00,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:00,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-24 19:27:00,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:00,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:27:00,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:27:00,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 19:27:00,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:27:00,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 19:27:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:00,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:00,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:00,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:27:00,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:00,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 19:27:00,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:00,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:00,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:27:00,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:00,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:27:00,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-09-24 19:27:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:00,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:00,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:00,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 19:27:00,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:00,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 19:27:00,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:00,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:00,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-24 19:27:00,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:00,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:27:01,080 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 202 proven. 54 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-24 19:27:01,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451023796] [2020-09-24 19:27:01,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:27:01,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:27:01,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426745017] [2020-09-24 19:27:01,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:27:01,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:27:01,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:27:01,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:27:01,084 INFO L87 Difference]: Start difference. First operand 3305 states and 3574 transitions. Second operand 7 states.