/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=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:02:43,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:02:43,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:02:43,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:02:43,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:02:43,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:02:43,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:02:43,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:02:43,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:02:43,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:02:43,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:02:43,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:02:43,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:02:43,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:02:43,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:02:43,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:02:43,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:02:43,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:02:43,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:02:43,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:02:43,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:02:43,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:02:43,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:02:44,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:02:44,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:02:44,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:02:44,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:02:44,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:02:44,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:02:44,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:02:44,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:02:44,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:02:44,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:02:44,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:02:44,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:02:44,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:02:44,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:02:44,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:02:44,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:02:44,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:02:44,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:02:44,015 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 09:02:44,043 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:02:44,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:02:44,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:02:44,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:02:44,045 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:02:44,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:02:44,046 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:02:44,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:02:44,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:02:44,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:02:44,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:02:44,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:02:44,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:02:44,047 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:02:44,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:02:44,048 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:02:44,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:02:44,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:02:44,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:02:44,049 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:02:44,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:02:44,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:02:44,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:02:44,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:02:44,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:02:44,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:02:44,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:02:44,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:02:44,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:02:44,051 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:02:44,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:02:44,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:02:44,581 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:02:44,584 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:02:44,584 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:02:44,585 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label25.c [2020-09-25 09:02:44,682 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/447fd7dd3/485d7a5a753b4794bdfba7fa14b4b7ff/FLAGfb4cf8f41 [2020-09-25 09:02:45,362 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:02:45,363 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label25.c [2020-09-25 09:02:45,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/447fd7dd3/485d7a5a753b4794bdfba7fa14b4b7ff/FLAGfb4cf8f41 [2020-09-25 09:02:45,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/447fd7dd3/485d7a5a753b4794bdfba7fa14b4b7ff [2020-09-25 09:02:45,628 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:02:45,635 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:02:45,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:02:45,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:02:45,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:02:45,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:02:45" (1/1) ... [2020-09-25 09:02:45,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4757cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:45, skipping insertion in model container [2020-09-25 09:02:45,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:02:45" (1/1) ... [2020-09-25 09:02:45,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:02:45,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:02:46,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:02:46,328 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:02:46,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:02:46,439 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:02:46,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:46 WrapperNode [2020-09-25 09:02:46,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:02:46,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:02:46,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:02:46,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:02:46,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:46" (1/1) ... [2020-09-25 09:02:46,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:46" (1/1) ... [2020-09-25 09:02:46,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:46" (1/1) ... [2020-09-25 09:02:46,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:46" (1/1) ... [2020-09-25 09:02:46,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:46" (1/1) ... [2020-09-25 09:02:46,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:46" (1/1) ... [2020-09-25 09:02:46,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:46" (1/1) ... [2020-09-25 09:02:46,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:02:46,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:02:46,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:02:46,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:02:46,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:46" (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 09:02:46,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:02:46,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:02:46,662 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:02:46,663 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:02:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:02:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:02:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:02:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:02:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:02:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:02:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:02:48,084 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:02:48,085 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:02:48,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:02:48 BoogieIcfgContainer [2020-09-25 09:02:48,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:02:48,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:02:48,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:02:48,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:02:48,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:02:45" (1/3) ... [2020-09-25 09:02:48,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4cc94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:02:48, skipping insertion in model container [2020-09-25 09:02:48,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:46" (2/3) ... [2020-09-25 09:02:48,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4cc94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:02:48, skipping insertion in model container [2020-09-25 09:02:48,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:02:48" (3/3) ... [2020-09-25 09:02:48,104 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label25.c [2020-09-25 09:02:48,116 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:02:48,128 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:02:48,152 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:02:48,192 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:02:48,194 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:02:48,195 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:02:48,195 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:02:48,195 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:02:48,196 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:02:48,196 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:02:48,196 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:02:48,252 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:02:48,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 09:02:48,301 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:48,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:02:48,303 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:48,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:48,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1730766665, now seen corresponding path program 1 times [2020-09-25 09:02:48,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:48,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331446254] [2020-09-25 09:02:48,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:48,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:49,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:49,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:49,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:49,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:52,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:52,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:53,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:53,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 09:02:53,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:02:53,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 09:02:53,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:53,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:53,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:02:53,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 09:02:53,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 09:02:53,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 09:02:53,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:53,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:54,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:54,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:54,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:54,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 09:02:54,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:54,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:54,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:54,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:54,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:02:54,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:02:54,130 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 09:02:54,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331446254] [2020-09-25 09:02:54,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:02:54,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:02:54,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561947320] [2020-09-25 09:02:54,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:02:54,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:54,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:02:54,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:02:54,175 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 09:02:56,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:56,683 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 09:02:56,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:02:56,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-09-25 09:02:56,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:56,717 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 09:02:56,718 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 09:02:56,727 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 09:02:56,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 09:02:56,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 09:02:56,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 09:02:56,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 09:02:56,847 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 160 [2020-09-25 09:02:56,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:56,848 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 09:02:56,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:02:56,848 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 09:02:56,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 09:02:56,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:56,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:02:56,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:02:56,860 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:56,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:56,861 INFO L82 PathProgramCache]: Analyzing trace with hash -859680355, now seen corresponding path program 1 times [2020-09-25 09:02:56,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:56,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114718983] [2020-09-25 09:02:56,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:56,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:57,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:57,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:57,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:57,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:59,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:01,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:01,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 09:03:01,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:03:01,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 09:03:01,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:01,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:01,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:03:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 09:03:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-09-25 09:03:01,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:03:02,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:02,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:02,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:02,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:02,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:02,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 09:03:02,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:02,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:02,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:02,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:02,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:03:02,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:02,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:02,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:02,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:02,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:02,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:03:02,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:03:02,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 09:03:02,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:02,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:02,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:02,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:03:02,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:03:02,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:02,276 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:03:02,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114718983] [2020-09-25 09:03:02,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:02,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:03:02,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130569164] [2020-09-25 09:03:02,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:03:02,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:02,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:03:02,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:03:02,281 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 7 states. [2020-09-25 09:03:04,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:04,836 INFO L93 Difference]: Finished difference Result 1775 states and 2318 transitions. [2020-09-25 09:03:04,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:03:04,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 178 [2020-09-25 09:03:04,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:04,849 INFO L225 Difference]: With dead ends: 1775 [2020-09-25 09:03:04,849 INFO L226 Difference]: Without dead ends: 1132 [2020-09-25 09:03:04,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:03:04,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2020-09-25 09:03:04,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1120. [2020-09-25 09:03:04,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1120 states. [2020-09-25 09:03:04,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1466 transitions. [2020-09-25 09:03:04,924 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1466 transitions. Word has length 178 [2020-09-25 09:03:04,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:04,925 INFO L479 AbstractCegarLoop]: Abstraction has 1120 states and 1466 transitions. [2020-09-25 09:03:04,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:03:04,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1466 transitions. [2020-09-25 09:03:04,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 09:03:04,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:04,934 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:03:04,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:03:04,935 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:04,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:04,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1129646447, now seen corresponding path program 1 times [2020-09-25 09:03:04,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:04,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571581546] [2020-09-25 09:03:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:05,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:05,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:05,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:05,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:06,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:06,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:07,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:09,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:09,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 09:03:09,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:03:09,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 09:03:09,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:09,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:09,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:09,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 09:03:09,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 09:03:09,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:10,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:10,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:10,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:10,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:10,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:10,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:03:10,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:10,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:10,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:10,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:10,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:10,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:10,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:10,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:10,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:10,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:03:10,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:10,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 09:03:10,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:10,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:10,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 09:03:10,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:03:10,357 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:03:10,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571581546] [2020-09-25 09:03:10,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:10,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:03:10,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294121186] [2020-09-25 09:03:10,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:03:10,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:10,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:03:10,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:03:10,362 INFO L87 Difference]: Start difference. First operand 1120 states and 1466 transitions. Second operand 5 states. [2020-09-25 09:03:12,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:12,589 INFO L93 Difference]: Finished difference Result 2834 states and 3829 transitions. [2020-09-25 09:03:12,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:03:12,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-09-25 09:03:12,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:12,598 INFO L225 Difference]: With dead ends: 2834 [2020-09-25 09:03:12,598 INFO L226 Difference]: Without dead ends: 1359 [2020-09-25 09:03:12,605 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 09:03:12,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2020-09-25 09:03:12,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1196. [2020-09-25 09:03:12,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1196 states. [2020-09-25 09:03:12,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1450 transitions. [2020-09-25 09:03:12,646 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1450 transitions. Word has length 198 [2020-09-25 09:03:12,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:12,646 INFO L479 AbstractCegarLoop]: Abstraction has 1196 states and 1450 transitions. [2020-09-25 09:03:12,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:03:12,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1450 transitions. [2020-09-25 09:03:12,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 09:03:12,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:12,654 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:03:12,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:03:12,654 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:12,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:12,655 INFO L82 PathProgramCache]: Analyzing trace with hash 380278058, now seen corresponding path program 1 times [2020-09-25 09:03:12,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:12,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259480911] [2020-09-25 09:03:12,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:12,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:12,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:12,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:15,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:16,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:17,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:17,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-09-25 09:03:17,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:03:17,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 09:03:17,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:17,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:17,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:03:17,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-09-25 09:03:17,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 09:03:17,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:18,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:18,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:18,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:18,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:18,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:18,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:03:18,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:18,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:18,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:18,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:18,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:18,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:18,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:18,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:18,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:18,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:03:18,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:18,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:03:18,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:18,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:18,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:18,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 09:03:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:18,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:18,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:18,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:03:18,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:18,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 09:03:18,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:18,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:18,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:03:18,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:18,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:03:18,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 09:03:18,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259480911] [2020-09-25 09:03:18,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:18,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:03:18,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939972255] [2020-09-25 09:03:18,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:03:18,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:18,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:03:18,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:03:18,739 INFO L87 Difference]: Start difference. First operand 1196 states and 1450 transitions. Second operand 9 states. [2020-09-25 09:03:23,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:23,290 INFO L93 Difference]: Finished difference Result 3866 states and 4882 transitions. [2020-09-25 09:03:23,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:03:23,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 224 [2020-09-25 09:03:23,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:23,306 INFO L225 Difference]: With dead ends: 3866 [2020-09-25 09:03:23,307 INFO L226 Difference]: Without dead ends: 2273 [2020-09-25 09:03:23,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:03:23,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2020-09-25 09:03:23,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 1941. [2020-09-25 09:03:23,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1941 states. [2020-09-25 09:03:23,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2317 transitions. [2020-09-25 09:03:23,383 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2317 transitions. Word has length 224 [2020-09-25 09:03:23,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:23,384 INFO L479 AbstractCegarLoop]: Abstraction has 1941 states and 2317 transitions. [2020-09-25 09:03:23,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:03:23,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2317 transitions. [2020-09-25 09:03:23,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-25 09:03:23,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:23,394 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 09:03:23,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:03:23,394 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:23,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:23,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1285921582, now seen corresponding path program 1 times [2020-09-25 09:03:23,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:23,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475730092] [2020-09-25 09:03:23,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:23,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:23,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:23,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:24,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:25,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:26,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:28,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:28,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-25 09:03:28,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:03:28,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:03:28,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:28,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:28,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:03:28,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-09-25 09:03:28,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 09:03:28,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:28,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:28,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:28,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:28,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:28,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:28,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:03:28,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:28,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:28,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:28,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:28,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:28,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:28,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:28,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:28,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:28,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:03:28,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:28,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:03:28,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:28,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:28,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:28,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 09:03:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:28,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:28,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:28,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 09:03:28,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:28,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 09:03:28,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:28,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:28,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:28,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:28,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 09:03:28,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:03:28,969 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 09:03:28,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475730092] [2020-09-25 09:03:28,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:28,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:03:28,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342310788] [2020-09-25 09:03:28,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:03:28,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:28,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:03:28,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:03:28,972 INFO L87 Difference]: Start difference. First operand 1941 states and 2317 transitions. Second operand 7 states. [2020-09-25 09:03:31,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:31,193 INFO L93 Difference]: Finished difference Result 4095 states and 4910 transitions. [2020-09-25 09:03:31,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 09:03:31,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 249 [2020-09-25 09:03:31,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:31,194 INFO L225 Difference]: With dead ends: 4095 [2020-09-25 09:03:31,194 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 09:03:31,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:03:31,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 09:03:31,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 09:03:31,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 09:03:31,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 09:03:31,206 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 249 [2020-09-25 09:03:31,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:31,206 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 09:03:31,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:03:31,206 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 09:03:31,206 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 09:03:31,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:03:31,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 09:03:32,068 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 33 [2020-09-25 09:03:32,198 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 33 [2020-09-25 09:03:32,761 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 75 [2020-09-25 09:03:32,931 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38