/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=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/Problem02_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:21:07,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:21:07,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:21:07,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:21:07,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:21:07,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:21:07,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:21:07,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:21:07,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:21:07,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:21:07,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:21:07,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:21:07,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:21:07,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:21:07,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:21:07,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:21:07,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:21:07,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:21:07,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:21:07,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:21:07,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:21:07,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:21:07,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:21:07,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:21:07,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:21:07,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:21:07,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:21:07,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:21:07,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:21:07,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:21:07,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:21:07,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:21:07,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:21:07,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:21:07,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:21:07,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:21:07,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:21:07,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:21:07,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:21:07,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:21:07,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:21:07,375 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 18:21:07,420 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:21:07,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:21:07,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:21:07,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:21:07,423 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:21:07,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:21:07,423 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:21:07,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:21:07,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:21:07,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:21:07,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:21:07,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:21:07,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:21:07,426 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:21:07,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:21:07,426 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:21:07,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:21:07,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:21:07,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:21:07,427 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:21:07,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:21:07,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:21:07,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:21:07,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:21:07,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:21:07,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:21:07,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:21:07,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:21:07,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:21:07,429 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=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=5000;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=5000;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=5000;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=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:21:07,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:21:07,944 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:21:07,949 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:21:07,951 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:21:07,951 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:21:07,953 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label03.c [2020-09-24 18:21:08,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d96b2e14f/a7b06635ab2b478da47198999bb963ec/FLAG283a0807c [2020-09-24 18:21:08,685 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:21:08,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label03.c [2020-09-24 18:21:08,707 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d96b2e14f/a7b06635ab2b478da47198999bb963ec/FLAG283a0807c [2020-09-24 18:21:08,934 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d96b2e14f/a7b06635ab2b478da47198999bb963ec [2020-09-24 18:21:08,949 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:21:08,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:21:08,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:08,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:21:08,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:21:08,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:08" (1/1) ... [2020-09-24 18:21:08,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dfcebea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:08, skipping insertion in model container [2020-09-24 18:21:08,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:08" (1/1) ... [2020-09-24 18:21:08,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:21:09,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:21:09,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:09,613 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:21:09,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:09,849 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:21:09,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:09 WrapperNode [2020-09-24 18:21:09,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:09,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:21:09,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:21:09,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:21:09,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:09" (1/1) ... [2020-09-24 18:21:09,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:09" (1/1) ... [2020-09-24 18:21:09,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:09" (1/1) ... [2020-09-24 18:21:09,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:09" (1/1) ... [2020-09-24 18:21:09,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:09" (1/1) ... [2020-09-24 18:21:09,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:09" (1/1) ... [2020-09-24 18:21:09,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:09" (1/1) ... [2020-09-24 18:21:09,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:21:09,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:21:09,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:21:09,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:21:09,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:21:10,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:21:10,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:21:10,049 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:21:10,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:21:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:21:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:21:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:21:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:21:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:21:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:21:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:21:11,425 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:21:11,425 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:21:11,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:11 BoogieIcfgContainer [2020-09-24 18:21:11,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:21:11,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:21:11,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:21:11,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:21:11,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:21:08" (1/3) ... [2020-09-24 18:21:11,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1469fd63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:11, skipping insertion in model container [2020-09-24 18:21:11,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:09" (2/3) ... [2020-09-24 18:21:11,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1469fd63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:11, skipping insertion in model container [2020-09-24 18:21:11,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:11" (3/3) ... [2020-09-24 18:21:11,450 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label03.c [2020-09-24 18:21:11,462 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:21:11,476 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:21:11,498 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:21:11,537 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:21:11,538 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:21:11,538 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:21:11,539 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:21:11,539 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:21:11,539 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:21:11,539 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:21:11,539 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:21:11,578 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:21:11,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-24 18:21:11,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:11,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:11,613 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:11,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:11,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1547939106, now seen corresponding path program 1 times [2020-09-24 18:21:11,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:11,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484456556] [2020-09-24 18:21:11,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:12,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:12,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:12,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:13,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:14,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:14,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:15,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:16,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:16,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:16,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:16,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:16,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-24 18:21:16,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:21:16,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:21:16,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:16,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:21:16,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:21:16,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-24 18:21:16,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:21:17,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:17,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:17,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:17,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:17,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:17,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 18:21:17,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:21:17,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:17,272 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 18:21:17,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484456556] [2020-09-24 18:21:17,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:21:17,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:21:17,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043438064] [2020-09-24 18:21:17,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:21:17,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:17,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:21:17,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:21:17,310 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:21:19,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:19,745 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-24 18:21:19,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:21:19,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-09-24 18:21:19,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:19,773 INFO L225 Difference]: With dead ends: 1248 [2020-09-24 18:21:19,773 INFO L226 Difference]: Without dead ends: 670 [2020-09-24 18:21:19,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:19,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-24 18:21:19,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-24 18:21:19,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-24 18:21:19,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-24 18:21:19,895 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 155 [2020-09-24 18:21:19,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:19,896 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-24 18:21:19,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:21:19,897 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-24 18:21:19,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-24 18:21:19,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:19,906 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:19,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:21:19,907 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:19,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:19,907 INFO L82 PathProgramCache]: Analyzing trace with hash 3946953, now seen corresponding path program 1 times [2020-09-24 18:21:19,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:19,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513369095] [2020-09-24 18:21:19,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:20,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:20,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:20,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:20,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:20,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:21,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:21,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:22,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:24,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:24,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-24 18:21:24,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:21:24,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:21:24,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 18:21:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-24 18:21:24,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:25,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:25,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:25,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:25,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:25,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:25,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:21:25,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:25,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:25,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:25,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:25,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:25,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:25,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:25,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:25,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:21:25,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:25,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:21:25,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:25,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:25,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:25,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:21:25,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:25,201 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:25,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513369095] [2020-09-24 18:21:25,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:25,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:25,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966858629] [2020-09-24 18:21:25,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:25,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:25,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:25,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:25,206 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-24 18:21:27,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:27,200 INFO L93 Difference]: Finished difference Result 1533 states and 1846 transitions. [2020-09-24 18:21:27,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:27,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-09-24 18:21:27,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:27,210 INFO L225 Difference]: With dead ends: 1533 [2020-09-24 18:21:27,210 INFO L226 Difference]: Without dead ends: 934 [2020-09-24 18:21:27,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:27,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-09-24 18:21:27,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 772. [2020-09-24 18:21:27,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 772 states. [2020-09-24 18:21:27,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 953 transitions. [2020-09-24 18:21:27,277 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 953 transitions. Word has length 172 [2020-09-24 18:21:27,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:27,279 INFO L479 AbstractCegarLoop]: Abstraction has 772 states and 953 transitions. [2020-09-24 18:21:27,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:27,280 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 953 transitions. [2020-09-24 18:21:27,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-24 18:21:27,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:27,286 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:27,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:21:27,286 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:27,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:27,287 INFO L82 PathProgramCache]: Analyzing trace with hash 608489, now seen corresponding path program 1 times [2020-09-24 18:21:27,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:27,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137690460] [2020-09-24 18:21:27,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:27,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:27,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:27,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:29,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:31,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:31,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:32,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:32,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:32,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-24 18:21:32,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:21:32,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:21:32,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:32,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:32,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-24 18:21:32,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-24 18:21:32,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:32,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:32,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:32,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:32,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:32,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:32,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:21:32,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:32,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:32,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:32,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:32,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:32,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:32,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:32,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:32,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:21:32,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:32,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:21:32,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:32,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:32,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:32,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:21:32,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:32,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137690460] [2020-09-24 18:21:32,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:32,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:32,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446020929] [2020-09-24 18:21:32,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:32,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:32,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:32,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:32,584 INFO L87 Difference]: Start difference. First operand 772 states and 953 transitions. Second operand 5 states. [2020-09-24 18:21:34,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:34,491 INFO L93 Difference]: Finished difference Result 2144 states and 2711 transitions. [2020-09-24 18:21:34,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:34,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-24 18:21:34,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:34,504 INFO L225 Difference]: With dead ends: 2144 [2020-09-24 18:21:34,504 INFO L226 Difference]: Without dead ends: 1394 [2020-09-24 18:21:34,507 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 18:21:34,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2020-09-24 18:21:34,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1189. [2020-09-24 18:21:34,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1189 states. [2020-09-24 18:21:34,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1456 transitions. [2020-09-24 18:21:34,561 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1456 transitions. Word has length 181 [2020-09-24 18:21:34,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:34,561 INFO L479 AbstractCegarLoop]: Abstraction has 1189 states and 1456 transitions. [2020-09-24 18:21:34,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:34,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1456 transitions. [2020-09-24 18:21:34,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-24 18:21:34,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:34,571 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:34,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:21:34,574 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:34,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:34,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1551100014, now seen corresponding path program 1 times [2020-09-24 18:21:34,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:34,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932543421] [2020-09-24 18:21:34,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:34,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:34,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:35,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:35,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:35,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:36,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:39,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:39,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:39,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:39,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:39,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-24 18:21:39,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:21:39,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-24 18:21:39,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:39,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:39,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-24 18:21:39,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-24 18:21:39,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:39,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:39,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:39,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:39,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:39,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:39,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:21:39,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:39,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:39,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:39,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:39,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:39,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:39,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:39,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:39,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:21:39,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:39,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:21:39,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:39,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:39,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:39,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:39,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:21:39,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:21:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:39,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:39,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:39,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:21:39,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:39,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 18:21:39,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:39,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:39,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:39,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:21:39,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:39,956 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-24 18:21:39,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932543421] [2020-09-24 18:21:39,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:39,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:39,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697012459] [2020-09-24 18:21:39,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:39,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:39,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:39,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:39,961 INFO L87 Difference]: Start difference. First operand 1189 states and 1456 transitions. Second operand 5 states. [2020-09-24 18:21:41,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:41,865 INFO L93 Difference]: Finished difference Result 2845 states and 3646 transitions. [2020-09-24 18:21:41,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:41,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2020-09-24 18:21:41,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:41,875 INFO L225 Difference]: With dead ends: 2845 [2020-09-24 18:21:41,876 INFO L226 Difference]: Without dead ends: 1678 [2020-09-24 18:21:41,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 18:21:41,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2020-09-24 18:21:41,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1649. [2020-09-24 18:21:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1649 states. [2020-09-24 18:21:41,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 1989 transitions. [2020-09-24 18:21:41,933 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 1989 transitions. Word has length 206 [2020-09-24 18:21:41,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:41,933 INFO L479 AbstractCegarLoop]: Abstraction has 1649 states and 1989 transitions. [2020-09-24 18:21:41,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:41,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 1989 transitions. [2020-09-24 18:21:41,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-24 18:21:41,941 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:41,942 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:41,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:21:41,942 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:41,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:41,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1766114473, now seen corresponding path program 1 times [2020-09-24 18:21:41,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:41,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803697890] [2020-09-24 18:21:41,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:42,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:42,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:42,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:42,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:42,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:45,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:46,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:46,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:46,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-24 18:21:46,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:21:46,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-24 18:21:46,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:46,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:46,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 18:21:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:21:46,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:47,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:47,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:47,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:47,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:47,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:47,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:21:47,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:47,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:47,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:47,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:47,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:47,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:47,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:47,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:47,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:21:47,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:47,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:21:47,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:47,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:47,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:47,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:21:47,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:47,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 18:21:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:47,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:47,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:47,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 18:21:47,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:47,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 18:21:47,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:47,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:47,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:47,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:21:47,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:21:47,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803697890] [2020-09-24 18:21:47,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:47,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:21:47,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171836000] [2020-09-24 18:21:47,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:21:47,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:47,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:21:47,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:21:47,356 INFO L87 Difference]: Start difference. First operand 1649 states and 1989 transitions. Second operand 7 states. [2020-09-24 18:21:49,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:49,590 INFO L93 Difference]: Finished difference Result 4526 states and 5644 transitions. [2020-09-24 18:21:49,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:21:49,594 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-09-24 18:21:49,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:49,606 INFO L225 Difference]: With dead ends: 4526 [2020-09-24 18:21:49,607 INFO L226 Difference]: Without dead ends: 2350 [2020-09-24 18:21:49,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:21:49,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2020-09-24 18:21:49,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 2186. [2020-09-24 18:21:49,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2186 states. [2020-09-24 18:21:49,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2186 states to 2186 states and 2603 transitions. [2020-09-24 18:21:49,679 INFO L78 Accepts]: Start accepts. Automaton has 2186 states and 2603 transitions. Word has length 217 [2020-09-24 18:21:49,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:49,680 INFO L479 AbstractCegarLoop]: Abstraction has 2186 states and 2603 transitions. [2020-09-24 18:21:49,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:21:49,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2186 states and 2603 transitions. [2020-09-24 18:21:49,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-24 18:21:49,691 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:49,691 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:21:49,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:21:49,692 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:49,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:49,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1102446521, now seen corresponding path program 1 times [2020-09-24 18:21:49,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:49,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353980054] [2020-09-24 18:21:49,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:49,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:49,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:50,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:50,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:54,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:54,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-09-24 18:21:54,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:21:54,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-24 18:21:54,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:54,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:54,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 18:21:54,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-24 18:21:54,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:54,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:54,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:54,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:54,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:54,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:54,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:21:54,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:54,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:54,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:54,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:54,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:54,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:54,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:54,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:54,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:21:54,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:54,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:21:54,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:21:54,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:54,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 18:21:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:54,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:55,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:55,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 18:21:55,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:55,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-24 18:21:55,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:55,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:55,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:55,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 18:21:55,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:55,195 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:21:55,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353980054] [2020-09-24 18:21:55,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:55,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:21:55,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811330359] [2020-09-24 18:21:55,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:21:55,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:55,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:21:55,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:21:55,197 INFO L87 Difference]: Start difference. First operand 2186 states and 2603 transitions. Second operand 7 states. [2020-09-24 18:21:57,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:57,553 INFO L93 Difference]: Finished difference Result 5023 states and 6136 transitions. [2020-09-24 18:21:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:21:57,560 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 261 [2020-09-24 18:21:57,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:57,580 INFO L225 Difference]: With dead ends: 5023 [2020-09-24 18:21:57,580 INFO L226 Difference]: Without dead ends: 2859 [2020-09-24 18:21:57,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 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 18:21:57,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states.