/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:43:08,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:43:08,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:43:08,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:43:08,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:43:08,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:43:08,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:43:08,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:43:08,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:43:08,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:43:08,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:43:08,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:43:08,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:43:08,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:43:08,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:43:08,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:43:08,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:43:08,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:43:08,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:43:08,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:43:08,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:43:08,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:43:08,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:43:08,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:43:08,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:43:08,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:43:08,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:43:08,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:43:08,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:43:08,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:43:08,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:43:08,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:43:08,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:43:08,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:43:08,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:43:08,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:43:08,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:43:08,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:43:08,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:43:08,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:43:08,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:43:08,343 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 06:43:08,387 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:43:08,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:43:08,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:43:08,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:43:08,389 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:43:08,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:43:08,390 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:43:08,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:43:08,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:43:08,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:43:08,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:43:08,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:43:08,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:43:08,393 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:43:08,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:43:08,393 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:43:08,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:43:08,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:43:08,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:43:08,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:43:08,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:43:08,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:43:08,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:43:08,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:43:08,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:43:08,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:43:08,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:43:08,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:43:08,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:43:08,396 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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:43:08,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:43:08,843 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:43:08,848 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:43:08,850 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:43:08,850 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:43:08,851 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-25 06:43:08,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cbcf1a0cf/70c9aaf1b6ad4059bbcf32093c92c3d4/FLAGa1006d994 [2020-09-25 06:43:09,562 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:43:09,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-25 06:43:09,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cbcf1a0cf/70c9aaf1b6ad4059bbcf32093c92c3d4/FLAGa1006d994 [2020-09-25 06:43:09,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cbcf1a0cf/70c9aaf1b6ad4059bbcf32093c92c3d4 [2020-09-25 06:43:09,837 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:43:09,843 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:43:09,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:09,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:43:09,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:43:09,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:09" (1/1) ... [2020-09-25 06:43:09,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e5ec8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:09, skipping insertion in model container [2020-09-25 06:43:09,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:09" (1/1) ... [2020-09-25 06:43:09,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:43:09,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:43:10,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:10,388 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:43:10,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:10,620 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:43:10,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:10 WrapperNode [2020-09-25 06:43:10,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:10,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:43:10,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:43:10,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:43:10,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:10" (1/1) ... [2020-09-25 06:43:10,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:10" (1/1) ... [2020-09-25 06:43:10,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:10" (1/1) ... [2020-09-25 06:43:10,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:10" (1/1) ... [2020-09-25 06:43:10,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:10" (1/1) ... [2020-09-25 06:43:10,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:10" (1/1) ... [2020-09-25 06:43:10,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:10" (1/1) ... [2020-09-25 06:43:10,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:43:10,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:43:10,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:43:10,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:43:10,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:10" (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 06:43:10,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:43:10,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:43:10,805 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:43:10,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:43:10,805 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:43:10,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:43:10,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:43:10,806 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:43:10,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:43:10,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:43:10,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:43:12,015 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:43:12,016 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:43:12,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:12 BoogieIcfgContainer [2020-09-25 06:43:12,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:43:12,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:43:12,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:43:12,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:43:12,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:43:09" (1/3) ... [2020-09-25 06:43:12,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223224ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:12, skipping insertion in model container [2020-09-25 06:43:12,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:10" (2/3) ... [2020-09-25 06:43:12,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223224ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:12, skipping insertion in model container [2020-09-25 06:43:12,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:12" (3/3) ... [2020-09-25 06:43:12,034 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label53.c [2020-09-25 06:43:12,046 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:43:12,057 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:43:12,079 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:43:12,112 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:43:12,112 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:43:12,112 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:43:12,112 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:43:12,112 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:43:12,113 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:43:12,113 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:43:12,113 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:43:12,145 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 06:43:12,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 06:43:12,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:12,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:12,169 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:12,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:12,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1414748743, now seen corresponding path program 1 times [2020-09-25 06:43:12,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:12,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68871380] [2020-09-25 06:43:12,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:12,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:12,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:13,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:13,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:16,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:17,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:17,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 06:43:17,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:43:17,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 06:43:17,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:17,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:17,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:17,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:43:17,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 06:43:17,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:43:17,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:17,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:17,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:17,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:17,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:17,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 06:43:17,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:17,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:17,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:17,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:17,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 06:43:17,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:43:17,889 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 06:43:17,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68871380] [2020-09-25 06:43:17,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:17,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:43:17,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794717653] [2020-09-25 06:43:17,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:17,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:17,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:17,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:17,958 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 06:43:20,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:20,050 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-25 06:43:20,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:43:20,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 06:43:20,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:20,090 INFO L225 Difference]: With dead ends: 1259 [2020-09-25 06:43:20,090 INFO L226 Difference]: Without dead ends: 685 [2020-09-25 06:43:20,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:43:20,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-25 06:43:20,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-25 06:43:20,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 06:43:20,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-25 06:43:20,227 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 142 [2020-09-25 06:43:20,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:20,229 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-25 06:43:20,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:43:20,229 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-25 06:43:20,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 06:43:20,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:20,236 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:20,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:43:20,237 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:20,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:20,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1681317672, now seen corresponding path program 1 times [2020-09-25 06:43:20,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:20,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750716101] [2020-09-25 06:43:20,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:20,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:20,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:20,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:25,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:25,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 06:43:25,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:43:25,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 06:43:25,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:25,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:25,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:25,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:43:25,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 06:43:25,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:25,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:25,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:25,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:25,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:25,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:25,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 06:43:25,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:25,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:25,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:25,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:25,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 06:43:25,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:25,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:25,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:25,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:25,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:43:25,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:25,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 06:43:25,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:25,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:25,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:25,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:25,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:43:25,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:25,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750716101] [2020-09-25 06:43:25,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:25,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:43:25,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102575770] [2020-09-25 06:43:25,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:43:25,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:25,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:43:25,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:43:25,565 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 7 states. [2020-09-25 06:43:27,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:27,420 INFO L93 Difference]: Finished difference Result 1400 states and 1721 transitions. [2020-09-25 06:43:27,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:43:27,421 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-09-25 06:43:27,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:27,427 INFO L225 Difference]: With dead ends: 1400 [2020-09-25 06:43:27,427 INFO L226 Difference]: Without dead ends: 821 [2020-09-25 06:43:27,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:43:27,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2020-09-25 06:43:27,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 759. [2020-09-25 06:43:27,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2020-09-25 06:43:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 924 transitions. [2020-09-25 06:43:27,464 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 924 transitions. Word has length 163 [2020-09-25 06:43:27,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:27,466 INFO L479 AbstractCegarLoop]: Abstraction has 759 states and 924 transitions. [2020-09-25 06:43:27,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:43:27,466 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 924 transitions. [2020-09-25 06:43:27,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 06:43:27,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:27,474 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:27,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:43:27,478 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:27,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:27,479 INFO L82 PathProgramCache]: Analyzing trace with hash -769516074, now seen corresponding path program 1 times [2020-09-25 06:43:27,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:27,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304363194] [2020-09-25 06:43:27,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:27,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:27,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:27,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:27,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:28,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:29,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:29,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:30,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:30,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:30,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:32,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:32,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 06:43:32,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:43:32,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 06:43:32,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:32,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:32,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:32,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:43:32,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 06:43:32,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:32,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:32,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:32,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:32,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:32,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:32,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:43:32,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:32,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:32,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:32,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:32,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:32,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:32,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:32,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:32,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:32,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:43:32,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:32,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:43:32,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:32,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:32,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:32,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:32,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:43:32,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:32,822 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:32,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304363194] [2020-09-25 06:43:32,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:32,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:43:32,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561644173] [2020-09-25 06:43:32,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:32,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:32,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:32,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:32,825 INFO L87 Difference]: Start difference. First operand 759 states and 924 transitions. Second operand 5 states. [2020-09-25 06:43:34,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:34,725 INFO L93 Difference]: Finished difference Result 1988 states and 2525 transitions. [2020-09-25 06:43:34,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:43:34,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-09-25 06:43:34,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:34,734 INFO L225 Difference]: With dead ends: 1988 [2020-09-25 06:43:34,734 INFO L226 Difference]: Without dead ends: 1253 [2020-09-25 06:43:34,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 06:43:34,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2020-09-25 06:43:34,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1194. [2020-09-25 06:43:34,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-09-25 06:43:34,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1489 transitions. [2020-09-25 06:43:34,778 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1489 transitions. Word has length 163 [2020-09-25 06:43:34,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:34,778 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 1489 transitions. [2020-09-25 06:43:34,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:43:34,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1489 transitions. [2020-09-25 06:43:34,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 06:43:34,785 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:34,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:34,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:43:34,786 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:34,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:34,786 INFO L82 PathProgramCache]: Analyzing trace with hash 2135172696, now seen corresponding path program 1 times [2020-09-25 06:43:34,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:34,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466675951] [2020-09-25 06:43:34,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:34,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:34,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:35,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:38,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:39,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:39,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 06:43:39,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:43:39,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 06:43:39,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:39,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:39,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:43:39,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 06:43:39,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 06:43:39,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:40,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:40,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:40,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:40,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:40,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:40,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:43:40,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:40,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:40,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:40,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:40,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:40,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:40,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:40,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:43:40,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:40,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 06:43:40,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:40,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:40,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:43:40,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:40,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 06:43:40,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:40,419 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:40,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466675951] [2020-09-25 06:43:40,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:40,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 06:43:40,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778717782] [2020-09-25 06:43:40,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:43:40,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:40,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:43:40,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:43:40,428 INFO L87 Difference]: Start difference. First operand 1194 states and 1489 transitions. Second operand 10 states. [2020-09-25 06:43:43,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:43,701 INFO L93 Difference]: Finished difference Result 3341 states and 4377 transitions. [2020-09-25 06:43:43,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 06:43:43,702 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 179 [2020-09-25 06:43:43,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:43,717 INFO L225 Difference]: With dead ends: 3341 [2020-09-25 06:43:43,717 INFO L226 Difference]: Without dead ends: 1935 [2020-09-25 06:43:43,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:43:43,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2020-09-25 06:43:43,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1492. [2020-09-25 06:43:43,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1492 states. [2020-09-25 06:43:43,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 1828 transitions. [2020-09-25 06:43:43,782 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 1828 transitions. Word has length 179 [2020-09-25 06:43:43,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:43,783 INFO L479 AbstractCegarLoop]: Abstraction has 1492 states and 1828 transitions. [2020-09-25 06:43:43,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:43:43,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 1828 transitions. [2020-09-25 06:43:43,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 06:43:43,790 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:43,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:43,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:43:43,791 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:43,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:43,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1982265959, now seen corresponding path program 1 times [2020-09-25 06:43:43,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:43,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4154107] [2020-09-25 06:43:43,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:43,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:43,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:44,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:44,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:45,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:46,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:48,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:48,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 06:43:48,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:43:48,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:43:48,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:48,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:48,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:48,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 06:43:48,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 06:43:48,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:48,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:48,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:48,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:48,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:48,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:48,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:43:48,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:48,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:48,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:43:48,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:48,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:49,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:49,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 06:43:49,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:49,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 06:43:49,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:49,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:49,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:49,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:49,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:43:49,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:49,069 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:49,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4154107] [2020-09-25 06:43:49,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:49,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:43:49,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280291833] [2020-09-25 06:43:49,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:49,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:49,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:49,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:49,072 INFO L87 Difference]: Start difference. First operand 1492 states and 1828 transitions. Second operand 5 states. [2020-09-25 06:43:51,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:51,277 INFO L93 Difference]: Finished difference Result 4237 states and 5376 transitions. [2020-09-25 06:43:51,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:43:51,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-09-25 06:43:51,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:51,292 INFO L225 Difference]: With dead ends: 4237 [2020-09-25 06:43:51,292 INFO L226 Difference]: Without dead ends: 2769 [2020-09-25 06:43:51,298 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 06:43:51,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2020-09-25 06:43:51,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 2648. [2020-09-25 06:43:51,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2648 states. [2020-09-25 06:43:51,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2648 states to 2648 states and 3281 transitions. [2020-09-25 06:43:51,368 INFO L78 Accepts]: Start accepts. Automaton has 2648 states and 3281 transitions. Word has length 185 [2020-09-25 06:43:51,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:51,369 INFO L479 AbstractCegarLoop]: Abstraction has 2648 states and 3281 transitions. [2020-09-25 06:43:51,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:43:51,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2648 states and 3281 transitions. [2020-09-25 06:43:51,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 06:43:51,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:51,381 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:51,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:43:51,381 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:51,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:51,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1218049893, now seen corresponding path program 1 times [2020-09-25 06:43:51,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:51,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849571089] [2020-09-25 06:43:51,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:51,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:51,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:51,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:52,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:52,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:52,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:55,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:55,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:56,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:56,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 06:43:56,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:43:56,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 06:43:56,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:56,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:56,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 06:43:56,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 06:43:56,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:56,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:56,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:56,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:56,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:56,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:56,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:43:56,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:56,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:56,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:56,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:56,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:56,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:56,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:56,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:56,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:56,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:43:56,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:56,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 06:43:56,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:56,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:56,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:56,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:56,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 06:43:56,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:56,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849571089] [2020-09-25 06:43:56,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:56,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:43:56,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040285681] [2020-09-25 06:43:56,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:56,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:56,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:56,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:56,668 INFO L87 Difference]: Start difference. First operand 2648 states and 3281 transitions. Second operand 5 states.