/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=0.4 --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 13:33:12,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:33:12,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:33:12,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:33:12,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:33:12,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:33:12,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:33:12,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:33:12,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:33:12,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:33:12,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:33:12,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:33:12,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:33:12,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:33:12,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:33:12,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:33:12,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:33:12,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:33:12,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:33:12,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:33:12,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:33:12,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:33:12,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:33:12,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:33:12,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:33:12,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:33:12,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:33:12,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:33:12,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:33:12,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:33:12,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:33:12,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:33:12,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:33:12,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:33:12,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:33:12,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:33:12,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:33:12,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:33:12,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:33:12,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:33:12,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:33:12,264 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 13:33:12,318 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:33:12,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:33:12,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:33:12,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:33:12,321 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:33:12,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:33:12,322 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:33:12,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:33:12,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:33:12,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:33:12,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:33:12,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:33:12,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:33:12,325 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:33:12,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:33:12,325 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:33:12,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:33:12,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:33:12,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:33:12,326 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:33:12,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:33:12,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:33:12,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:33:12,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:33:12,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:33:12,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:33:12,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:33:12,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:33:12,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:33:12,328 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:33:12,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:33:12,786 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:33:12,793 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:33:12,796 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:33:12,797 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:33:12,798 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-25 13:33:12,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/272d16cc5/1fd97d1c05444760a22ffbdd5b44f953/FLAG09330db0d [2020-09-25 13:33:13,522 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:33:13,527 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-25 13:33:13,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/272d16cc5/1fd97d1c05444760a22ffbdd5b44f953/FLAG09330db0d [2020-09-25 13:33:13,780 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/272d16cc5/1fd97d1c05444760a22ffbdd5b44f953 [2020-09-25 13:33:13,797 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:33:13,803 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:33:13,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:13,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:33:13,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:33:13,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:13" (1/1) ... [2020-09-25 13:33:13,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57c5cb56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:13, skipping insertion in model container [2020-09-25 13:33:13,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:13" (1/1) ... [2020-09-25 13:33:13,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:33:13,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:33:14,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:14,483 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:33:14,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:14,719 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:33:14,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:14 WrapperNode [2020-09-25 13:33:14,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:14,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:33:14,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:33:14,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:33:14,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:14" (1/1) ... [2020-09-25 13:33:14,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:14" (1/1) ... [2020-09-25 13:33:14,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:14" (1/1) ... [2020-09-25 13:33:14,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:14" (1/1) ... [2020-09-25 13:33:14,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:14" (1/1) ... [2020-09-25 13:33:14,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:14" (1/1) ... [2020-09-25 13:33:14,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:14" (1/1) ... [2020-09-25 13:33:14,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:33:14,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:33:14,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:33:14,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:33:14,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:14" (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 13:33:14,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:33:14,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:33:14,919 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:33:14,919 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:33:14,919 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:33:14,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:33:14,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:33:14,920 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:33:14,920 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:33:14,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:33:14,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:33:16,281 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:33:16,281 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:33:16,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:16 BoogieIcfgContainer [2020-09-25 13:33:16,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:33:16,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:33:16,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:33:16,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:33:16,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:33:13" (1/3) ... [2020-09-25 13:33:16,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b53775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:16, skipping insertion in model container [2020-09-25 13:33:16,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:14" (2/3) ... [2020-09-25 13:33:16,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b53775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:16, skipping insertion in model container [2020-09-25 13:33:16,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:16" (3/3) ... [2020-09-25 13:33:16,302 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label55.c [2020-09-25 13:33:16,314 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:33:16,325 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:33:16,349 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:33:16,384 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:33:16,384 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:33:16,384 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:33:16,384 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:33:16,385 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:33:16,385 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:33:16,385 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:33:16,385 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:33:16,420 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:33:16,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 13:33:16,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:16,444 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 13:33:16,444 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:16,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:16,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1120036286, now seen corresponding path program 1 times [2020-09-25 13:33:16,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:16,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677215828] [2020-09-25 13:33:16,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:16,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:17,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:17,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:17,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:19,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:19,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:20,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:20,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:21,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:21,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:21,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:21,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 13:33:21,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:33:21,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 13:33:21,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:21,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:33:21,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 13:33:21,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:33:21,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:21,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:21,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:21,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:21,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:21,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 13:33:21,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:21,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:21,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:21,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:21,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:33:21,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:22,025 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 13:33:22,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677215828] [2020-09-25 13:33:22,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:33:22,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:33:22,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375648513] [2020-09-25 13:33:22,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:33:22,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:22,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:33:22,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:33:22,059 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:33:24,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:24,302 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 13:33:24,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:33:24,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-09-25 13:33:24,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:24,343 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 13:33:24,344 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 13:33:24,357 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 13:33:24,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 13:33:24,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 13:33:24,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 13:33:24,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 13:33:24,461 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 131 [2020-09-25 13:33:24,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:24,463 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 13:33:24,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:33:24,463 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 13:33:24,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 13:33:24,473 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:24,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:24,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:33:24,474 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:24,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:24,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1134154151, now seen corresponding path program 1 times [2020-09-25 13:33:24,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:24,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871366995] [2020-09-25 13:33:24,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:24,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:24,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:24,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:25,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:28,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:28,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:29,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:29,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 13:33:29,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:33:29,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:33:29,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:29,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:29,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:29,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 13:33:29,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 13:33:29,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:29,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:29,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:29,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:29,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:29,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:29,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:33:29,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:29,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:29,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:29,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:29,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:29,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 13:33:29,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:29,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:29,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:29,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:33:29,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:29,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 13:33:29,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:29,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:33:29,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:29,789 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:29,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871366995] [2020-09-25 13:33:29,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:29,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:29,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681235839] [2020-09-25 13:33:29,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:29,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:29,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:29,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:29,794 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 5 states. [2020-09-25 13:33:31,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:31,512 INFO L93 Difference]: Finished difference Result 1679 states and 2109 transitions. [2020-09-25 13:33:31,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:31,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-25 13:33:31,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:31,527 INFO L225 Difference]: With dead ends: 1679 [2020-09-25 13:33:31,527 INFO L226 Difference]: Without dead ends: 1086 [2020-09-25 13:33:31,530 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 13:33:31,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2020-09-25 13:33:31,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 967. [2020-09-25 13:33:31,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2020-09-25 13:33:31,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1216 transitions. [2020-09-25 13:33:31,589 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1216 transitions. Word has length 165 [2020-09-25 13:33:31,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:31,589 INFO L479 AbstractCegarLoop]: Abstraction has 967 states and 1216 transitions. [2020-09-25 13:33:31,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:31,590 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1216 transitions. [2020-09-25 13:33:31,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 13:33:31,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:31,596 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 13:33:31,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:33:31,596 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:31,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:31,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1319537639, now seen corresponding path program 1 times [2020-09-25 13:33:31,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:31,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977575648] [2020-09-25 13:33:31,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:31,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:31,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:31,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:32,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:32,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:34,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:34,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:36,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:36,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 13:33:36,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:33:36,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 13:33:36,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:36,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:36,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 13:33:36,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:33:36,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 13:33:36,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:37,441 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-09-25 13:33:37,590 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 35 [2020-09-25 13:33:37,758 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 33 [2020-09-25 13:33:37,937 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 30 [2020-09-25 13:33:38,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:38,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:38,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:38,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:38,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:38,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 13:33:38,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:38,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:38,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:33:38,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:38,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:33:38,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:38,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:38,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:38,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:38,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:38,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 13:33:38,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:33:38,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-25 13:33:38,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:38,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:38,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:38,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:38,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 13:33:38,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:38,652 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:38,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977575648] [2020-09-25 13:33:38,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:38,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 13:33:38,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914149000] [2020-09-25 13:33:38,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 13:33:38,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:38,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 13:33:38,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:33:38,660 INFO L87 Difference]: Start difference. First operand 967 states and 1216 transitions. Second operand 16 states. [2020-09-25 13:33:43,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:43,161 INFO L93 Difference]: Finished difference Result 3347 states and 4447 transitions. [2020-09-25 13:33:43,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:33:43,161 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 175 [2020-09-25 13:33:43,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:43,177 INFO L225 Difference]: With dead ends: 3347 [2020-09-25 13:33:43,177 INFO L226 Difference]: Without dead ends: 2402 [2020-09-25 13:33:43,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2020-09-25 13:33:43,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2020-09-25 13:33:43,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 2037. [2020-09-25 13:33:43,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2037 states. [2020-09-25 13:33:43,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 2584 transitions. [2020-09-25 13:33:43,269 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 2584 transitions. Word has length 175 [2020-09-25 13:33:43,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:43,269 INFO L479 AbstractCegarLoop]: Abstraction has 2037 states and 2584 transitions. [2020-09-25 13:33:43,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 13:33:43,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 2584 transitions. [2020-09-25 13:33:43,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 13:33:43,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:43,281 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 13:33:43,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:33:43,282 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:43,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:43,282 INFO L82 PathProgramCache]: Analyzing trace with hash 335216911, now seen corresponding path program 1 times [2020-09-25 13:33:43,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:43,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365523092] [2020-09-25 13:33:43,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:43,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:44,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:48,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 13:33:48,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:33:48,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 13:33:48,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:48,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:33:48,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 13:33:48,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 13:33:48,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:48,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:48,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:48,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:48,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:48,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:33:48,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:48,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:48,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:48,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:48,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:48,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:33:48,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:48,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:33:48,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:48,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:48,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:48,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:48,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:48,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:48,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:33:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:48,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:48,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:33:48,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:48,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 13:33:48,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:48,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:33:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:48,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 13:33:48,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:49,093 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 13:33:49,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365523092] [2020-09-25 13:33:49,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:49,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:33:49,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271322521] [2020-09-25 13:33:49,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:33:49,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:49,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:33:49,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:33:49,105 INFO L87 Difference]: Start difference. First operand 2037 states and 2584 transitions. Second operand 9 states. [2020-09-25 13:33:54,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:54,227 INFO L93 Difference]: Finished difference Result 6204 states and 8359 transitions. [2020-09-25 13:33:54,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:33:54,228 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 187 [2020-09-25 13:33:54,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:54,257 INFO L225 Difference]: With dead ends: 6204 [2020-09-25 13:33:54,257 INFO L226 Difference]: Without dead ends: 4003 [2020-09-25 13:33:54,269 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 13:33:54,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4003 states. [2020-09-25 13:33:54,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4003 to 3785. [2020-09-25 13:33:54,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3785 states. [2020-09-25 13:33:54,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3785 states to 3785 states and 4714 transitions. [2020-09-25 13:33:54,405 INFO L78 Accepts]: Start accepts. Automaton has 3785 states and 4714 transitions. Word has length 187 [2020-09-25 13:33:54,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:54,406 INFO L479 AbstractCegarLoop]: Abstraction has 3785 states and 4714 transitions. [2020-09-25 13:33:54,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:33:54,406 INFO L276 IsEmpty]: Start isEmpty. Operand 3785 states and 4714 transitions. [2020-09-25 13:33:54,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 13:33:54,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:54,421 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 13:33:54,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:33:54,421 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:54,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:54,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1049880763, now seen corresponding path program 1 times [2020-09-25 13:33:54,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:54,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030493016] [2020-09-25 13:33:54,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:54,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:54,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:55,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:55,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:55,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:56,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:59,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:59,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 13:33:59,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:33:59,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:33:59,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:59,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:59,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:59,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 13:33:59,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 13:33:59,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:59,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:59,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:59,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:59,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:59,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:59,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:33:59,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:59,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:59,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:59,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:59,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:59,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:59,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:59,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:59,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:59,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:33:59,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:59,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:33:59,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:59,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:59,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:59,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:59,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:59,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:59,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:33:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:59,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:59,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:59,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 13:33:59,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:59,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 13:33:59,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:59,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 13:33:59,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:59,732 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 13:33:59,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030493016] [2020-09-25 13:33:59,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:59,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:59,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089931117] [2020-09-25 13:33:59,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:59,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:59,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:59,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:59,735 INFO L87 Difference]: Start difference. First operand 3785 states and 4714 transitions. Second operand 5 states.