/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:20:55,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:20:55,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:20:55,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:20:55,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:20:55,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:20:55,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:20:55,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:20:55,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:20:55,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:20:55,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:20:55,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:20:55,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:20:55,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:20:55,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:20:55,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:20:55,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:20:55,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:20:55,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:20:55,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:20:55,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:20:55,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:20:55,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:20:55,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:20:55,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:20:55,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:20:55,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:20:55,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:20:55,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:20:55,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:20:55,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:20:55,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:20:55,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:20:55,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:20:55,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:20:55,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:20:55,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:20:55,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:20:55,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:20:55,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:20:55,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:20:55,546 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:20:55,571 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:20:55,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:20:55,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:20:55,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:20:55,573 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:20:55,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:20:55,573 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:20:55,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:20:55,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:20:55,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:20:55,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:20:55,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:20:55,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:20:55,575 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:20:55,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:20:55,575 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:20:55,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:20:55,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:20:55,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:20:55,576 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:20:55,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:20:55,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:20:55,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:20:55,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:20:55,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:20:55,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:20:55,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:20:55,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:20:55,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:20:55,578 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:20:56,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:20:56,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:20:56,091 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:20:56,095 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:20:56,096 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:20:56,097 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-09-25 12:20:56,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/818dd8d0e/8367c288d02943858647b08550023591/FLAG4aff0d29d [2020-09-25 12:20:56,856 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:20:56,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-09-25 12:20:56,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/818dd8d0e/8367c288d02943858647b08550023591/FLAG4aff0d29d [2020-09-25 12:20:57,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/818dd8d0e/8367c288d02943858647b08550023591 [2020-09-25 12:20:57,103 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:20:57,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:20:57,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:20:57,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:20:57,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:20:57,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:20:57" (1/1) ... [2020-09-25 12:20:57,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:57, skipping insertion in model container [2020-09-25 12:20:57,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:20:57" (1/1) ... [2020-09-25 12:20:57,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:20:57,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:20:57,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:20:57,772 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:20:58,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:20:58,033 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:20:58,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:58 WrapperNode [2020-09-25 12:20:58,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:20:58,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:20:58,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:20:58,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:20:58,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:58" (1/1) ... [2020-09-25 12:20:58,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:58" (1/1) ... [2020-09-25 12:20:58,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:58" (1/1) ... [2020-09-25 12:20:58,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:58" (1/1) ... [2020-09-25 12:20:58,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:58" (1/1) ... [2020-09-25 12:20:58,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:58" (1/1) ... [2020-09-25 12:20:58,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:58" (1/1) ... [2020-09-25 12:20:58,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:20:58,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:20:58,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:20:58,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:20:58,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:20:58,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:20:58,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:20:58,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:20:58,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:20:58,282 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:20:58,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:20:58,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:20:58,283 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:20:58,283 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:20:58,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:20:58,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:20:59,710 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:20:59,711 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:20:59,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:20:59 BoogieIcfgContainer [2020-09-25 12:20:59,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:20:59,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:20:59,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:20:59,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:20:59,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:20:57" (1/3) ... [2020-09-25 12:20:59,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:20:59, skipping insertion in model container [2020-09-25 12:20:59,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:58" (2/3) ... [2020-09-25 12:20:59,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:20:59, skipping insertion in model container [2020-09-25 12:20:59,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:20:59" (3/3) ... [2020-09-25 12:20:59,731 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label00.c [2020-09-25 12:20:59,743 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:20:59,755 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:20:59,778 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:20:59,814 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:20:59,815 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:20:59,815 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:20:59,815 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:20:59,815 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:20:59,815 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:20:59,815 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:20:59,816 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:20:59,850 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:20:59,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 12:20:59,872 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:59,874 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] [2020-09-25 12:20:59,875 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:59,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:59,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1944492271, now seen corresponding path program 1 times [2020-09-25 12:20:59,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:59,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859035075] [2020-09-25 12:20:59,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:00,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:00,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:01,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:01,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:04,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:05,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:05,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 12:21:05,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:21:05,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 12:21:05,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:05,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:05,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:21:05,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:21:05,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 12:21:05,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:21:05,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:05,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:05,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:05,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:05,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:05,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 12:21:05,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:05,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:05,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:21:05,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:21:05,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:05,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859035075] [2020-09-25 12:21:05,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:21:05,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:21:05,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055855645] [2020-09-25 12:21:05,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:21:05,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:05,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:21:05,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:21:05,598 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 12:21:07,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:07,949 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 12:21:07,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:21:07,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-09-25 12:21:07,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:07,979 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 12:21:07,979 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 12:21:07,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:08,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 12:21:08,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 12:21:08,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 12:21:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 12:21:08,104 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 136 [2020-09-25 12:21:08,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:08,105 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 12:21:08,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:21:08,105 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 12:21:08,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 12:21:08,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:08,116 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] [2020-09-25 12:21:08,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:21:08,117 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:08,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:08,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1586815040, now seen corresponding path program 1 times [2020-09-25 12:21:08,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:08,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260432298] [2020-09-25 12:21:08,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:08,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:08,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:08,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:09,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:09,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:09,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:11,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:11,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:13,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:13,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 12:21:13,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:21:13,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 12:21:13,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:13,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 12:21:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 12:21:13,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:13,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:13,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:13,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:13,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:13,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:13,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:21:13,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:13,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:13,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:13,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:13,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:13,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:13,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:13,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:13,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:13,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:21:13,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:13,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:21:13,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:13,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:13,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:13,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:13,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:21:13,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:21:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:13,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260432298] [2020-09-25 12:21:13,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:13,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:21:13,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664436675] [2020-09-25 12:21:13,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:21:13,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:13,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:21:13,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:21:13,541 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 6 states. [2020-09-25 12:21:16,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:16,439 INFO L93 Difference]: Finished difference Result 2016 states and 2519 transitions. [2020-09-25 12:21:16,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:21:16,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-09-25 12:21:16,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:16,457 INFO L225 Difference]: With dead ends: 2016 [2020-09-25 12:21:16,458 INFO L226 Difference]: Without dead ends: 1376 [2020-09-25 12:21:16,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:21:16,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-09-25 12:21:16,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1236. [2020-09-25 12:21:16,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1236 states. [2020-09-25 12:21:16,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1519 transitions. [2020-09-25 12:21:16,518 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1519 transitions. Word has length 157 [2020-09-25 12:21:16,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:16,518 INFO L479 AbstractCegarLoop]: Abstraction has 1236 states and 1519 transitions. [2020-09-25 12:21:16,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:21:16,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1519 transitions. [2020-09-25 12:21:16,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 12:21:16,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:16,529 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] [2020-09-25 12:21:16,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:21:16,529 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:16,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:16,530 INFO L82 PathProgramCache]: Analyzing trace with hash -980240193, now seen corresponding path program 1 times [2020-09-25 12:21:16,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:16,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160702329] [2020-09-25 12:21:16,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:16,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:16,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:16,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:16,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:17,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:17,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:17,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:18,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:19,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:19,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:19,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:20,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:21,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:21,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 12:21:21,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 12:21:21,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 12:21:21,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:21,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:21,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:21,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 12:21:21,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 12:21:21,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:21,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:21,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:21,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:21,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:21,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:21,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:21:21,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:21,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:21,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:21,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:21,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:21,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:21,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:21,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:21,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:21,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:21:21,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:21,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 12:21:21,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:21,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:21,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:21,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:21,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:21:21,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:21,931 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:21,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160702329] [2020-09-25 12:21:21,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:21,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:21:21,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477999141] [2020-09-25 12:21:21,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:21:21,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:21,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:21:21,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:21,935 INFO L87 Difference]: Start difference. First operand 1236 states and 1519 transitions. Second operand 5 states. [2020-09-25 12:21:24,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:24,011 INFO L93 Difference]: Finished difference Result 2961 states and 3720 transitions. [2020-09-25 12:21:24,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:21:24,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-09-25 12:21:24,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:24,021 INFO L225 Difference]: With dead ends: 2961 [2020-09-25 12:21:24,021 INFO L226 Difference]: Without dead ends: 1749 [2020-09-25 12:21:24,026 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 [2020-09-25 12:21:24,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2020-09-25 12:21:24,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 1544. [2020-09-25 12:21:24,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2020-09-25 12:21:24,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 1886 transitions. [2020-09-25 12:21:24,080 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 1886 transitions. Word has length 164 [2020-09-25 12:21:24,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:24,081 INFO L479 AbstractCegarLoop]: Abstraction has 1544 states and 1886 transitions. [2020-09-25 12:21:24,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:21:24,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 1886 transitions. [2020-09-25 12:21:24,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 12:21:24,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:24,090 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 12:21:24,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:21:24,090 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:24,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:24,091 INFO L82 PathProgramCache]: Analyzing trace with hash -579666185, now seen corresponding path program 1 times [2020-09-25 12:21:24,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:24,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900435181] [2020-09-25 12:21:24,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:24,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:24,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:24,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:24,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:24,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:24,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:25,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:29,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:29,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 12:21:29,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:21:29,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 12:21:29,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:29,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:29,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:21:29,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 12:21:29,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 12:21:29,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:29,838 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2020-09-25 12:21:30,034 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 52 [2020-09-25 12:21:30,327 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 52 [2020-09-25 12:21:30,574 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 49 [2020-09-25 12:21:30,793 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 45 [2020-09-25 12:21:31,041 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 41 [2020-09-25 12:21:31,289 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 35 [2020-09-25 12:21:31,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:31,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:31,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:31,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:31,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:31,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:21:31,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:31,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:31,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:31,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:31,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:31,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:31,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:31,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:31,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:31,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:21:31,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:31,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:21:31,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:31,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:31,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:31,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 12:21:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:31,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:31,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:31,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:21:31,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:31,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 12:21:31,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:31,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:21:31,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:21:31,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900435181] [2020-09-25 12:21:31,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:31,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 12:21:31,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572296815] [2020-09-25 12:21:31,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 12:21:31,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:31,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 12:21:31,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:21:31,849 INFO L87 Difference]: Start difference. First operand 1544 states and 1886 transitions. Second operand 15 states. [2020-09-25 12:21:32,537 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-25 12:21:32,937 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-25 12:21:33,186 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-09-25 12:21:34,138 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 115 [2020-09-25 12:21:34,480 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-09-25 12:21:35,101 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-25 12:21:35,395 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-09-25 12:21:35,733 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-25 12:21:35,915 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-09-25 12:21:36,170 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-09-25 12:21:36,433 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-25 12:21:36,995 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 112 [2020-09-25 12:21:37,680 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 109 [2020-09-25 12:21:38,251 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 106 [2020-09-25 12:21:38,650 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 101 [2020-09-25 12:21:39,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:39,935 INFO L93 Difference]: Finished difference Result 4768 states and 6214 transitions. [2020-09-25 12:21:39,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 12:21:39,935 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 182 [2020-09-25 12:21:39,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:39,956 INFO L225 Difference]: With dead ends: 4768 [2020-09-25 12:21:39,956 INFO L226 Difference]: Without dead ends: 3248 [2020-09-25 12:21:39,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=338, Invalid=654, Unknown=0, NotChecked=0, Total=992 [2020-09-25 12:21:39,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2020-09-25 12:21:40,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 3154. [2020-09-25 12:21:40,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3154 states. [2020-09-25 12:21:40,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 3807 transitions. [2020-09-25 12:21:40,095 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 3807 transitions. Word has length 182 [2020-09-25 12:21:40,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:40,096 INFO L479 AbstractCegarLoop]: Abstraction has 3154 states and 3807 transitions. [2020-09-25 12:21:40,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 12:21:40,098 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 3807 transitions. [2020-09-25 12:21:40,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 12:21:40,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:40,111 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:40,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:21:40,112 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:40,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:40,113 INFO L82 PathProgramCache]: Analyzing trace with hash -211066278, now seen corresponding path program 1 times [2020-09-25 12:21:40,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:40,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338084186] [2020-09-25 12:21:40,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:40,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:40,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:40,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:40,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:40,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:40,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:41,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:41,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:44,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:45,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:45,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 12:21:45,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:21:45,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 12:21:45,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:45,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:45,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:45,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 12:21:45,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 12:21:45,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:45,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:45,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:45,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:45,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:45,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:45,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:21:45,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:45,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:45,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:45,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:45,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:45,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:45,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:45,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:45,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:45,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 12:21:45,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:45,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 12:21:45,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:45,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:45,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:45,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:45,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:21:45,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:45,479 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:45,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338084186] [2020-09-25 12:21:45,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:45,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:21:45,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692299149] [2020-09-25 12:21:45,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:21:45,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:45,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:21:45,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:45,482 INFO L87 Difference]: Start difference. First operand 3154 states and 3807 transitions. Second operand 5 states.