/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:13:12,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:13:12,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:13:12,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:13:12,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:13:12,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:13:12,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:13:12,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:13:12,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:13:12,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:13:12,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:13:12,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:13:12,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:13:12,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:13:12,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:13:12,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:13:12,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:13:12,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:13:12,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:13:12,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:13:12,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:13:12,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:13:12,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:13:12,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:13:12,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:13:12,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:13:12,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:13:12,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:13:12,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:13:12,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:13:12,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:13:12,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:13:12,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:13:12,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:13:12,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:13:12,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:13:12,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:13:12,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:13:12,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:13:12,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:13:12,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:13:12,333 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 11:13:12,380 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:13:12,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:13:12,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:13:12,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:13:12,383 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:13:12,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:13:12,384 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:13:12,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:13:12,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:13:12,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:13:12,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:13:12,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:13:12,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:13:12,387 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:13:12,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:13:12,387 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:13:12,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:13:12,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:13:12,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:13:12,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:13:12,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:13:12,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:13:12,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:13:12,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:13:12,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:13:12,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:13:12,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:13:12,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:13:12,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:13:12,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:13:12,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:13:12,914 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:13:12,921 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:13:12,923 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:13:12,923 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:13:12,925 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-09-25 11:13:13,016 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3657a2f4d/437907858c664458a99d3de588e84fac/FLAGa224771d7 [2020-09-25 11:13:13,634 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:13:13,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-09-25 11:13:13,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3657a2f4d/437907858c664458a99d3de588e84fac/FLAGa224771d7 [2020-09-25 11:13:13,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3657a2f4d/437907858c664458a99d3de588e84fac [2020-09-25 11:13:13,879 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:13:13,886 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:13:13,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:13:13,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:13:13,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:13:13,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:13:13" (1/1) ... [2020-09-25 11:13:13,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:13, skipping insertion in model container [2020-09-25 11:13:13,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:13:13" (1/1) ... [2020-09-25 11:13:13,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:13:13,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:13:14,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:13:14,444 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:13:14,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:13:14,709 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:13:14,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:14 WrapperNode [2020-09-25 11:13:14,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:13:14,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:13:14,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:13:14,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:13:14,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:14" (1/1) ... [2020-09-25 11:13:14,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:14" (1/1) ... [2020-09-25 11:13:14,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:14" (1/1) ... [2020-09-25 11:13:14,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:14" (1/1) ... [2020-09-25 11:13:14,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:14" (1/1) ... [2020-09-25 11:13:14,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:14" (1/1) ... [2020-09-25 11:13:14,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:14" (1/1) ... [2020-09-25 11:13:14,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:13:14,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:13:14,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:13:14,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:13:14,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:14" (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 11:13:14,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:13:14,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:13:14,941 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:13:14,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:13:14,943 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:13:14,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:13:14,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:13:14,944 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:13:14,945 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:13:14,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:13:14,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:13:16,381 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:13:16,382 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:13:16,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:13:16 BoogieIcfgContainer [2020-09-25 11:13:16,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:13:16,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:13:16,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:13:16,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:13:16,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:13:13" (1/3) ... [2020-09-25 11:13:16,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:13:16, skipping insertion in model container [2020-09-25 11:13:16,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:14" (2/3) ... [2020-09-25 11:13:16,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:13:16, skipping insertion in model container [2020-09-25 11:13:16,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:13:16" (3/3) ... [2020-09-25 11:13:16,402 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label00.c [2020-09-25 11:13:16,414 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:13:16,426 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:13:16,450 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:13:16,486 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:13:16,486 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:13:16,486 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:13:16,487 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:13:16,487 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:13:16,487 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:13:16,487 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:13:16,487 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:13:16,521 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 11:13:16,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 11:13:16,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:16,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:16,544 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:16,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:16,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1944492271, now seen corresponding path program 1 times [2020-09-25 11:13:16,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:16,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859035075] [2020-09-25 11:13:16,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:17,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:17,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:18,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:18,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:20,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:21,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:21,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 11:13:21,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:13:21,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 11:13:21,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:21,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:21,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:13:21,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:13:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 11:13:21,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:13:22,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:22,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:22,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:22,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:13:22,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:22,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 11:13:22,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:22,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:22,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:22,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:22,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:13:22,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:22,148 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 11:13:22,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859035075] [2020-09-25 11:13:22,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:13:22,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:13:22,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055855645] [2020-09-25 11:13:22,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:13:22,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:22,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:13:22,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:13:22,184 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 11:13:24,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:24,396 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 11:13:24,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:13:24,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-09-25 11:13:24,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:24,445 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 11:13:24,445 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 11:13:24,455 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 11:13:24,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 11:13:24,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 11:13:24,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 11:13:24,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 11:13:24,570 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 136 [2020-09-25 11:13:24,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:24,571 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 11:13:24,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:13:24,572 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 11:13:24,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 11:13:24,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:24,580 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:24,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:13:24,580 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:24,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:24,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1586815040, now seen corresponding path program 1 times [2020-09-25 11:13:24,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:24,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260432298] [2020-09-25 11:13:24,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:24,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:24,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:25,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:25,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:25,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:25,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:27,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:27,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:29,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:29,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 11:13:29,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:13:29,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 11:13:29,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:29,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:29,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:13:29,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 11:13:29,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 11:13:29,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 11:13:29,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:29,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:29,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:29,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:29,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:13:29,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:29,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:13:29,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:29,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:29,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:29,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:29,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:29,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:29,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:13:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:29,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:29,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:29,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:13:29,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:29,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:13:29,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:29,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:29,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:29,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:29,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:13:29,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:29,961 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:13:29,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260432298] [2020-09-25 11:13:29,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:29,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:13:29,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379247443] [2020-09-25 11:13:29,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:13:29,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:29,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:13:29,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:13:29,966 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 6 states. [2020-09-25 11:13:32,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:32,938 INFO L93 Difference]: Finished difference Result 2016 states and 2519 transitions. [2020-09-25 11:13:32,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:13:32,938 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-09-25 11:13:32,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:32,952 INFO L225 Difference]: With dead ends: 2016 [2020-09-25 11:13:32,952 INFO L226 Difference]: Without dead ends: 1376 [2020-09-25 11:13:32,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:13:32,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-09-25 11:13:33,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1236. [2020-09-25 11:13:33,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1236 states. [2020-09-25 11:13:33,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1519 transitions. [2020-09-25 11:13:33,018 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1519 transitions. Word has length 157 [2020-09-25 11:13:33,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:33,019 INFO L479 AbstractCegarLoop]: Abstraction has 1236 states and 1519 transitions. [2020-09-25 11:13:33,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:13:33,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1519 transitions. [2020-09-25 11:13:33,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 11:13:33,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:33,026 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:33,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:13:33,027 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:33,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:33,027 INFO L82 PathProgramCache]: Analyzing trace with hash -980240193, now seen corresponding path program 1 times [2020-09-25 11:13:33,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:33,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173631243] [2020-09-25 11:13:33,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:33,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:33,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:33,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:33,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:33,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:33,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:34,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:34,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:36,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:36,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:36,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:37,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:38,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:38,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 11:13:38,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 11:13:38,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 11:13:38,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:38,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:38,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:13:38,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 11:13:38,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 11:13:38,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:38,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:38,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:38,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:38,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:13:38,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:38,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:13:38,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:38,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:38,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:38,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:38,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:38,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:38,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:13:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:38,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:38,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:38,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 11:13:38,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:38,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 11:13:38,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:38,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:38,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 11:13:38,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:38,334 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:13:38,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173631243] [2020-09-25 11:13:38,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:38,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:13:38,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791158974] [2020-09-25 11:13:38,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:13:38,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:38,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:13:38,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:13:38,338 INFO L87 Difference]: Start difference. First operand 1236 states and 1519 transitions. Second operand 5 states. [2020-09-25 11:13:40,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:40,652 INFO L93 Difference]: Finished difference Result 2961 states and 3720 transitions. [2020-09-25 11:13:40,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:13:40,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-09-25 11:13:40,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:40,671 INFO L225 Difference]: With dead ends: 2961 [2020-09-25 11:13:40,672 INFO L226 Difference]: Without dead ends: 1749 [2020-09-25 11:13:40,677 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 11:13:40,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2020-09-25 11:13:40,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 1544. [2020-09-25 11:13:40,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2020-09-25 11:13:40,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 1886 transitions. [2020-09-25 11:13:40,748 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 1886 transitions. Word has length 164 [2020-09-25 11:13:40,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:40,748 INFO L479 AbstractCegarLoop]: Abstraction has 1544 states and 1886 transitions. [2020-09-25 11:13:40,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:13:40,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 1886 transitions. [2020-09-25 11:13:40,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 11:13:40,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:40,757 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:40,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:13:40,757 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:40,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:40,758 INFO L82 PathProgramCache]: Analyzing trace with hash -579666185, now seen corresponding path program 1 times [2020-09-25 11:13:40,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:40,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681320718] [2020-09-25 11:13:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:40,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:40,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:40,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:41,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:41,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:41,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:42,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:45,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:45,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 11:13:45,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:13:45,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 11:13:45,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:45,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:45,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:13:45,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 11:13:45,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 11:13:45,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:46,740 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2020-09-25 11:13:46,940 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 52 [2020-09-25 11:13:47,220 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 52 [2020-09-25 11:13:47,494 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 49 [2020-09-25 11:13:47,752 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 45 [2020-09-25 11:13:47,991 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 41 [2020-09-25 11:13:48,245 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 35 [2020-09-25 11:13:48,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:48,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:48,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:48,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:13:48,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:48,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:13:48,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:48,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:48,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:48,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:48,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:13:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:48,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:48,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:48,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:13:48,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:48,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:13:48,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:48,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:48,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:48,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:48,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:48,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:48,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 11:13:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:48,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:48,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:48,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:13:48,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:48,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 11:13:48,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:48,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:13:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 11:13:48,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:13:48,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681320718] [2020-09-25 11:13:48,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:48,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:13:48,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572296815] [2020-09-25 11:13:48,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:13:48,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:48,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:13:48,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:13:48,913 INFO L87 Difference]: Start difference. First operand 1544 states and 1886 transitions. Second operand 15 states. [2020-09-25 11:13:49,577 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-25 11:13:49,913 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-25 11:13:50,126 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-09-25 11:13:51,006 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 115 [2020-09-25 11:13:51,367 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-09-25 11:13:51,929 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-25 11:13:52,223 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-09-25 11:13:52,556 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-25 11:13:52,735 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-09-25 11:13:53,189 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-25 11:13:53,759 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 112 [2020-09-25 11:13:54,394 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 109 [2020-09-25 11:13:54,939 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 106 [2020-09-25 11:13:55,277 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 101 [2020-09-25 11:13:56,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:56,551 INFO L93 Difference]: Finished difference Result 4768 states and 6214 transitions. [2020-09-25 11:13:56,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 11:13:56,552 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 182 [2020-09-25 11:13:56,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:56,570 INFO L225 Difference]: With dead ends: 4768 [2020-09-25 11:13:56,571 INFO L226 Difference]: Without dead ends: 3248 [2020-09-25 11:13:56,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=338, Invalid=654, Unknown=0, NotChecked=0, Total=992 [2020-09-25 11:13:56,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2020-09-25 11:13:56,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 3154. [2020-09-25 11:13:56,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3154 states. [2020-09-25 11:13:56,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 3807 transitions. [2020-09-25 11:13:56,696 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 3807 transitions. Word has length 182 [2020-09-25 11:13:56,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:56,697 INFO L479 AbstractCegarLoop]: Abstraction has 3154 states and 3807 transitions. [2020-09-25 11:13:56,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:13:56,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 3807 transitions. [2020-09-25 11:13:56,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 11:13:56,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:56,710 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:56,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:13:56,710 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:56,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:56,710 INFO L82 PathProgramCache]: Analyzing trace with hash -211066278, now seen corresponding path program 1 times [2020-09-25 11:13:56,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:56,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765153156] [2020-09-25 11:13:56,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:56,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:56,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:57,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:57,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:57,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:57,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:57,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:58,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking...