/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_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:04:20,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:04:20,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:04:20,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:04:20,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:04:20,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:04:20,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:04:20,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:04:20,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:04:20,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:04:20,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:04:20,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:04:20,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:04:20,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:04:20,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:04:20,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:04:20,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:04:20,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:04:20,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:04:20,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:04:20,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:04:20,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:04:20,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:04:20,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:04:20,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:04:20,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:04:20,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:04:20,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:04:20,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:04:20,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:04:20,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:04:20,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:04:20,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:04:20,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:04:20,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:04:20,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:04:20,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:04:20,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:04:20,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:04:20,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:04:20,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:04:20,287 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 09:04:20,337 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:04:20,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:04:20,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:04:20,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:04:20,342 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:04:20,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:04:20,342 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:04:20,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:04:20,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:04:20,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:04:20,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:04:20,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:04:20,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:04:20,345 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:04:20,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:04:20,347 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:04:20,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:04:20,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:04:20,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:04:20,348 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:04:20,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:04:20,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:04:20,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:04:20,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:04:20,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:04:20,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:04:20,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:04:20,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:04:20,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:04:20,350 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 09:04:20,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:04:20,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:04:20,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:04:20,890 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:04:20,890 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:04:20,891 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-25 09:04:20,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9fca04a4/4ddf3e8131e5489fb4e4a0b85bf5a646/FLAG3894156f2 [2020-09-25 09:04:21,649 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:04:21,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-25 09:04:21,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9fca04a4/4ddf3e8131e5489fb4e4a0b85bf5a646/FLAG3894156f2 [2020-09-25 09:04:21,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9fca04a4/4ddf3e8131e5489fb4e4a0b85bf5a646 [2020-09-25 09:04:21,896 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:04:21,902 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:04:21,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:21,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:04:21,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:04:21,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:21" (1/1) ... [2020-09-25 09:04:21,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd8ad23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:21, skipping insertion in model container [2020-09-25 09:04:21,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:21" (1/1) ... [2020-09-25 09:04:21,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:04:21,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:04:22,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:22,685 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:04:22,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:22,781 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:04:22,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:22 WrapperNode [2020-09-25 09:04:22,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:22,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:04:22,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:04:22,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:04:22,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:22" (1/1) ... [2020-09-25 09:04:22,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:22" (1/1) ... [2020-09-25 09:04:22,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:22" (1/1) ... [2020-09-25 09:04:22,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:22" (1/1) ... [2020-09-25 09:04:22,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:22" (1/1) ... [2020-09-25 09:04:22,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:22" (1/1) ... [2020-09-25 09:04:22,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:22" (1/1) ... [2020-09-25 09:04:22,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:04:22,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:04:22,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:04:22,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:04:22,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:22" (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 09:04:23,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:04:23,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:04:23,028 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:04:23,028 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:04:23,029 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:04:23,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:04:23,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:04:23,031 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:04:23,031 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:04:23,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:04:23,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:04:24,451 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:04:24,452 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:04:24,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:24 BoogieIcfgContainer [2020-09-25 09:04:24,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:04:24,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:04:24,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:04:24,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:04:24,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:04:21" (1/3) ... [2020-09-25 09:04:24,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe8f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:24, skipping insertion in model container [2020-09-25 09:04:24,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:22" (2/3) ... [2020-09-25 09:04:24,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe8f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:24, skipping insertion in model container [2020-09-25 09:04:24,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:24" (3/3) ... [2020-09-25 09:04:24,482 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label55.c [2020-09-25 09:04:24,494 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:04:24,510 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:04:24,533 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:04:24,574 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:04:24,574 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:04:24,574 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:04:24,574 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:04:24,575 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:04:24,575 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:04:24,575 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:04:24,575 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:04:24,608 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:04:24,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 09:04:24,631 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:24,633 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] [2020-09-25 09:04:24,634 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:24,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:24,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1120036286, now seen corresponding path program 1 times [2020-09-25 09:04:24,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:24,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235266026] [2020-09-25 09:04:24,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:25,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:25,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:25,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:25,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:27,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:27,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:29,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:29,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:29,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:29,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:30,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:30,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 09:04:30,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:04:30,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-25 09:04:30,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:30,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:30,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:04:30,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 09:04:30,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 09:04:30,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 09:04:30,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:30,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:30,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:30,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:30,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:30,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 09:04:30,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:30,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:30,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:04:30,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:30,447 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 09:04:30,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235266026] [2020-09-25 09:04:30,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:04:30,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:04:30,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294749392] [2020-09-25 09:04:30,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:04:30,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:30,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:04:30,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:04:30,482 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 09:04:33,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:33,126 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 09:04:33,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:04:33,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-09-25 09:04:33,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:33,179 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 09:04:33,179 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 09:04:33,195 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 09:04:33,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 09:04:33,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 09:04:33,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 09:04:33,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 09:04:33,395 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 131 [2020-09-25 09:04:33,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:33,397 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 09:04:33,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:04:33,397 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 09:04:33,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 09:04:33,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:33,408 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] [2020-09-25 09:04:33,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:04:33,408 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:33,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:33,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1110069102, now seen corresponding path program 1 times [2020-09-25 09:04:33,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:33,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556904161] [2020-09-25 09:04:33,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:33,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:33,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:33,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:34,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:34,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:34,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:36,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:37,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:37,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:38,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:38,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:38,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 09:04:38,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:04:38,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 09:04:38,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:38,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:04:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:04:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 09:04:38,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:38,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:38,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:38,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:38,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:38,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:38,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:04:38,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:38,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:38,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:38,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:38,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:04:38,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:38,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:38,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:38,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:38,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:38,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:04:38,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:04:38,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 09:04:38,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:38,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:38,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:38,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:38,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:04:38,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:38,773 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:04:38,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556904161] [2020-09-25 09:04:38,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:38,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:04:38,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285844190] [2020-09-25 09:04:38,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:04:38,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:38,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:04:38,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:38,780 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 6 states. [2020-09-25 09:04:40,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:40,458 INFO L93 Difference]: Finished difference Result 1626 states and 2090 transitions. [2020-09-25 09:04:40,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:04:40,463 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2020-09-25 09:04:40,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:40,477 INFO L225 Difference]: With dead ends: 1626 [2020-09-25 09:04:40,477 INFO L226 Difference]: Without dead ends: 983 [2020-09-25 09:04:40,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:04:40,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2020-09-25 09:04:40,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 971. [2020-09-25 09:04:40,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-09-25 09:04:40,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1222 transitions. [2020-09-25 09:04:40,547 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1222 transitions. Word has length 149 [2020-09-25 09:04:40,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:40,551 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1222 transitions. [2020-09-25 09:04:40,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:04:40,551 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1222 transitions. [2020-09-25 09:04:40,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 09:04:40,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:40,564 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] [2020-09-25 09:04:40,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:04:40,564 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:40,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:40,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1319537639, now seen corresponding path program 1 times [2020-09-25 09:04:40,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:40,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947055122] [2020-09-25 09:04:40,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:40,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:40,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:40,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:41,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:41,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:43,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:44,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:45,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:45,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 09:04:45,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:04:45,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:04:45,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:45,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:45,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:04:45,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:04:45,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 09:04:45,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:45,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:45,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:45,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:45,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:45,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:45,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 09:04:45,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:45,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:45,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:45,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:45,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:04:45,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:45,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:45,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:45,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:45,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 09:04:45,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:45,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 09:04:45,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:45,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:45,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:45,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:45,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 09:04:45,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:45,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947055122] [2020-09-25 09:04:45,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:04:45,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:04:45,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608729613] [2020-09-25 09:04:45,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:04:45,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:45,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:04:45,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:04:45,952 INFO L87 Difference]: Start difference. First operand 971 states and 1222 transitions. Second operand 7 states. [2020-09-25 09:04:48,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:48,908 INFO L93 Difference]: Finished difference Result 2803 states and 3691 transitions. [2020-09-25 09:04:48,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:04:48,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-09-25 09:04:48,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:48,923 INFO L225 Difference]: With dead ends: 2803 [2020-09-25 09:04:48,923 INFO L226 Difference]: Without dead ends: 1854 [2020-09-25 09:04:48,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:04:48,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2020-09-25 09:04:49,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1749. [2020-09-25 09:04:49,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1749 states. [2020-09-25 09:04:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 2227 transitions. [2020-09-25 09:04:49,025 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 2227 transitions. Word has length 175 [2020-09-25 09:04:49,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:49,026 INFO L479 AbstractCegarLoop]: Abstraction has 1749 states and 2227 transitions. [2020-09-25 09:04:49,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:04:49,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 2227 transitions. [2020-09-25 09:04:49,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 09:04:49,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:49,048 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:49,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:04:49,048 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:49,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:49,049 INFO L82 PathProgramCache]: Analyzing trace with hash 335216911, now seen corresponding path program 1 times [2020-09-25 09:04:49,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:49,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324185822] [2020-09-25 09:04:49,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:49,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:54,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:54,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 09:04:54,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:04:54,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 09:04:54,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:54,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:04:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 09:04:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 09:04:54,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:54,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:54,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:54,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:54,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:54,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:54,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:04:54,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:54,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:54,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:54,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:54,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:54,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:54,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:54,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:54,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:54,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:04:54,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:54,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:04:54,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:54,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:54,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:54,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:54,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:54,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:54,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:04:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:54,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:54,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:54,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:04:54,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:54,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 09:04:54,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:54,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:54,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:04:54,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:54,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:04:54,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:54,741 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 09:04:54,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324185822] [2020-09-25 09:04:54,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:54,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:04:54,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275841050] [2020-09-25 09:04:54,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:04:54,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:54,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:04:54,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:04:54,746 INFO L87 Difference]: Start difference. First operand 1749 states and 2227 transitions. Second operand 9 states. [2020-09-25 09:04:59,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:59,119 INFO L93 Difference]: Finished difference Result 5624 states and 7657 transitions. [2020-09-25 09:04:59,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:04:59,119 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 187 [2020-09-25 09:04:59,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:59,151 INFO L225 Difference]: With dead ends: 5624 [2020-09-25 09:04:59,151 INFO L226 Difference]: Without dead ends: 3711 [2020-09-25 09:04:59,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:04:59,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3711 states. [2020-09-25 09:04:59,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3711 to 3643. [2020-09-25 09:04:59,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3643 states. [2020-09-25 09:04:59,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 4535 transitions. [2020-09-25 09:04:59,322 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 4535 transitions. Word has length 187 [2020-09-25 09:04:59,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:59,323 INFO L479 AbstractCegarLoop]: Abstraction has 3643 states and 4535 transitions. [2020-09-25 09:04:59,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:04:59,323 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 4535 transitions. [2020-09-25 09:04:59,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 09:04:59,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:59,339 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:59,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:04:59,339 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:59,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:59,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1049880763, now seen corresponding path program 1 times [2020-09-25 09:04:59,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:59,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291927367] [2020-09-25 09:04:59,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:59,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:59,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:00,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:00,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:00,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:01,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:04,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:04,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 09:05:04,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:05:04,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 09:05:04,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:04,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:04,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:04,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 09:05:04,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 09:05:04,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:04,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:04,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:04,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:04,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:05:04,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:04,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:05:04,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:04,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:04,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:04,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:04,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:04,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:05:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:04,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:04,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:04,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:05:04,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:04,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:05:04,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:04,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:04,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:04,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:05:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:04,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:04,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:04,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 09:05:04,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:04,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 09:05:04,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:04,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:04,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:04,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:04,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 09:05:04,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:05:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 09:05:04,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291927367] [2020-09-25 09:05:04,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:04,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:05:04,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592595666] [2020-09-25 09:05:04,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:05:04,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:04,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:05:04,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:05:04,673 INFO L87 Difference]: Start difference. First operand 3643 states and 4535 transitions. Second operand 5 states. [2020-09-25 09:05:06,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:06,781 INFO L93 Difference]: Finished difference Result 9471 states and 12203 transitions. [2020-09-25 09:05:06,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:05:06,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-09-25 09:05:06,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:06,810 INFO L225 Difference]: With dead ends: 9471 [2020-09-25 09:05:06,810 INFO L226 Difference]: Without dead ends: 5850 [2020-09-25 09:05:06,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:06,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5850 states. [2020-09-25 09:05:06,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5850 to 5771. [2020-09-25 09:05:06,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5771 states. [2020-09-25 09:05:06,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5771 states to 5771 states and 7074 transitions. [2020-09-25 09:05:06,971 INFO L78 Accepts]: Start accepts. Automaton has 5771 states and 7074 transitions. Word has length 193 [2020-09-25 09:05:06,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:06,972 INFO L479 AbstractCegarLoop]: Abstraction has 5771 states and 7074 transitions. [2020-09-25 09:05:06,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:05:06,972 INFO L276 IsEmpty]: Start isEmpty. Operand 5771 states and 7074 transitions. [2020-09-25 09:05:06,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 09:05:06,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:06,991 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:06,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:05:06,992 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:06,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:06,992 INFO L82 PathProgramCache]: Analyzing trace with hash 952535934, now seen corresponding path program 1 times [2020-09-25 09:05:06,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:06,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052593386] [2020-09-25 09:05:06,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:07,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:07,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:07,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:07,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:07,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:08,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:09,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking...