/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=0.1 --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_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:10:28,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:10:28,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:10:28,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:10:28,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:10:28,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:10:28,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:10:28,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:10:28,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:10:28,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:10:28,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:10:28,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:10:28,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:10:28,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:10:28,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:10:28,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:10:28,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:10:28,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:10:28,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:10:28,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:10:28,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:10:28,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:10:28,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:10:28,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:10:28,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:10:28,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:10:28,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:10:28,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:10:28,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:10:28,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:10:28,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:10:28,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:10:28,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:10:28,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:10:28,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:10:28,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:10:28,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:10:28,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:10:28,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:10:28,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:10:28,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:10:28,193 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 10:10:28,225 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:10:28,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:10:28,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:10:28,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:10:28,227 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:10:28,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:10:28,227 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:10:28,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:10:28,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:10:28,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:10:28,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:10:28,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:10:28,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:10:28,231 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:10:28,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:10:28,232 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:10:28,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:10:28,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:10:28,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:10:28,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:10:28,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:10:28,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:10:28,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:10:28,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:10:28,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:10:28,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:10:28,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:10:28,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:10:28,236 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:10:28,237 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:10:28,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:10:28,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:10:28,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:10:28,711 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:10:28,712 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:10:28,713 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label51.c [2020-09-25 10:10:28,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ca05430d/65d8f9fe33454c85a89a20970c85e558/FLAGa6f74ab14 [2020-09-25 10:10:29,369 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:10:29,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label51.c [2020-09-25 10:10:29,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ca05430d/65d8f9fe33454c85a89a20970c85e558/FLAGa6f74ab14 [2020-09-25 10:10:29,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ca05430d/65d8f9fe33454c85a89a20970c85e558 [2020-09-25 10:10:29,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:10:29,638 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:10:29,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:29,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:10:29,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:10:29,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:29" (1/1) ... [2020-09-25 10:10:29,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69c7438f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:29, skipping insertion in model container [2020-09-25 10:10:29,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:29" (1/1) ... [2020-09-25 10:10:29,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:10:29,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:10:30,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:30,151 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:10:30,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:30,381 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:10:30,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:30 WrapperNode [2020-09-25 10:10:30,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:30,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:10:30,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:10:30,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:10:30,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:30" (1/1) ... [2020-09-25 10:10:30,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:30" (1/1) ... [2020-09-25 10:10:30,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:30" (1/1) ... [2020-09-25 10:10:30,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:30" (1/1) ... [2020-09-25 10:10:30,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:30" (1/1) ... [2020-09-25 10:10:30,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:30" (1/1) ... [2020-09-25 10:10:30,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:30" (1/1) ... [2020-09-25 10:10:30,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:10:30,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:10:30,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:10:30,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:10:30,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:30" (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 10:10:30,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:10:30,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:10:30,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:10:30,587 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:10:30,587 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:10:30,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:10:30,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:10:30,588 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:10:30,588 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:10:30,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:10:30,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:10:31,859 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:10:31,859 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:10:31,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:31 BoogieIcfgContainer [2020-09-25 10:10:31,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:10:31,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:10:31,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:10:31,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:10:31,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:10:29" (1/3) ... [2020-09-25 10:10:31,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ccda54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:31, skipping insertion in model container [2020-09-25 10:10:31,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:30" (2/3) ... [2020-09-25 10:10:31,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ccda54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:31, skipping insertion in model container [2020-09-25 10:10:31,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:31" (3/3) ... [2020-09-25 10:10:31,879 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label51.c [2020-09-25 10:10:31,891 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:10:31,902 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:10:31,924 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:10:31,958 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:10:31,958 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:10:31,959 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:10:31,959 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:10:31,959 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:10:31,959 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:10:31,959 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:10:31,960 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:10:31,991 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:10:32,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 10:10:32,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:32,013 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 10:10:32,013 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:32,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:32,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1376443753, now seen corresponding path program 1 times [2020-09-25 10:10:32,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:32,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327157547] [2020-09-25 10:10:32,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:32,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:32,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:33,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:34,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:34,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:37,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:37,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 10:10:37,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:10:37,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 10:10:37,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:37,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:10:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 10:10:37,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:10:37,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:37,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:37,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:37,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:37,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:37,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:10:37,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:37,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:37,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:37,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:37,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:10:37,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:37,626 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 10:10:37,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327157547] [2020-09-25 10:10:37,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:10:37,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:10:37,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637942307] [2020-09-25 10:10:37,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:10:37,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:37,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:10:37,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:10:37,657 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:10:39,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:39,987 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 10:10:39,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:10:39,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-09-25 10:10:39,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:40,019 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 10:10:40,019 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 10:10:40,033 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 10:10:40,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 10:10:40,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 10:10:40,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 10:10:40,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 10:10:40,144 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 136 [2020-09-25 10:10:40,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:40,145 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 10:10:40,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:10:40,145 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 10:10:40,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 10:10:40,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:40,157 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:40,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:10:40,158 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:40,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:40,158 INFO L82 PathProgramCache]: Analyzing trace with hash 685540285, now seen corresponding path program 1 times [2020-09-25 10:10:40,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:40,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523879882] [2020-09-25 10:10:40,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:40,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:40,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:40,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:41,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:41,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:42,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:42,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:45,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:45,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:45,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 10:10:45,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:10:45,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:10:45,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:45,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:45,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:10:45,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:10:45,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 10:10:45,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 10:10:45,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:45,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:45,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:45,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:45,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:45,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:10:45,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:45,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:45,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:45,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:45,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:10:45,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:45,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:45,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:45,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:45,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:45,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:10:45,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:45,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:10:45,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:45,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:45,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:45,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:45,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:10:45,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:45,639 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:10:45,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523879882] [2020-09-25 10:10:45,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:45,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:10:45,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664840488] [2020-09-25 10:10:45,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:10:45,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:45,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:10:45,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:10:45,650 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 6 states. [2020-09-25 10:10:47,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:47,504 INFO L93 Difference]: Finished difference Result 1612 states and 2074 transitions. [2020-09-25 10:10:47,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:10:47,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2020-09-25 10:10:47,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:47,513 INFO L225 Difference]: With dead ends: 1612 [2020-09-25 10:10:47,513 INFO L226 Difference]: Without dead ends: 975 [2020-09-25 10:10:47,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:10:47,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2020-09-25 10:10:47,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 965. [2020-09-25 10:10:47,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2020-09-25 10:10:47,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1216 transitions. [2020-09-25 10:10:47,558 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1216 transitions. Word has length 154 [2020-09-25 10:10:47,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:47,559 INFO L479 AbstractCegarLoop]: Abstraction has 965 states and 1216 transitions. [2020-09-25 10:10:47,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:10:47,559 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1216 transitions. [2020-09-25 10:10:47,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 10:10:47,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:47,564 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:47,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:10:47,565 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:47,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:47,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1901105650, now seen corresponding path program 1 times [2020-09-25 10:10:47,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:47,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41924623] [2020-09-25 10:10:47,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:47,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:47,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:47,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:50,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:50,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:51,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:52,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:52,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:52,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 10:10:52,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:10:52,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-09-25 10:10:52,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:52,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 10:10:52,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:10:52,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 10:10:52,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:53,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:53,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:53,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:53,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:53,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:53,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:10:53,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:53,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:53,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:10:53,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:53,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:10:53,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:53,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:53,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:53,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:53,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:53,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 10:10:53,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:53,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 10:10:53,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:53,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:53,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:53,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:53,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 10:10:53,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:53,779 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:53,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41924623] [2020-09-25 10:10:53,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:53,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 10:10:53,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127893535] [2020-09-25 10:10:53,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 10:10:53,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:53,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 10:10:53,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:10:53,783 INFO L87 Difference]: Start difference. First operand 965 states and 1216 transitions. Second operand 16 states. [2020-09-25 10:10:57,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:57,503 INFO L93 Difference]: Finished difference Result 3381 states and 4547 transitions. [2020-09-25 10:10:57,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:10:57,504 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 180 [2020-09-25 10:10:57,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:57,525 INFO L225 Difference]: With dead ends: 3381 [2020-09-25 10:10:57,525 INFO L226 Difference]: Without dead ends: 2438 [2020-09-25 10:10:57,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2020-09-25 10:10:57,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2020-09-25 10:10:57,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 2037. [2020-09-25 10:10:57,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2037 states. [2020-09-25 10:10:57,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 2590 transitions. [2020-09-25 10:10:57,628 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 2590 transitions. Word has length 180 [2020-09-25 10:10:57,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:57,629 INFO L479 AbstractCegarLoop]: Abstraction has 2037 states and 2590 transitions. [2020-09-25 10:10:57,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 10:10:57,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 2590 transitions. [2020-09-25 10:10:57,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 10:10:57,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:57,639 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, 1, 1, 1, 1, 1] [2020-09-25 10:10:57,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:10:57,640 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:57,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:57,641 INFO L82 PathProgramCache]: Analyzing trace with hash 361672380, now seen corresponding path program 1 times [2020-09-25 10:10:57,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:57,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383004540] [2020-09-25 10:10:57,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:57,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:57,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:57,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:57,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:59,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:59,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:01,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:01,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:02,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:02,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 10:11:02,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:11:02,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 10:11:02,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:02,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:02,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:11:02,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 10:11:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 10:11:02,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:02,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:02,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:02,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:02,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:02,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:02,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:11:02,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:02,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:02,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:11:02,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:02,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:11:02,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:11:02,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:02,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:02,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:02,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:11:02,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:02,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:11:02,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:02,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:11:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:11:02,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:02,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 10:11:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:03,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:03,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:03,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:11:03,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:03,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 10:11:03,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:03,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:03,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:03,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:11:03,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:03,549 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 10:11:03,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383004540] [2020-09-25 10:11:03,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:03,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:11:03,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394581585] [2020-09-25 10:11:03,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:11:03,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:03,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:11:03,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:11:03,553 INFO L87 Difference]: Start difference. First operand 2037 states and 2590 transitions. Second operand 8 states. [2020-09-25 10:11:07,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:07,738 INFO L93 Difference]: Finished difference Result 6180 states and 8362 transitions. [2020-09-25 10:11:07,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:11:07,738 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 192 [2020-09-25 10:11:07,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:07,759 INFO L225 Difference]: With dead ends: 6180 [2020-09-25 10:11:07,760 INFO L226 Difference]: Without dead ends: 3979 [2020-09-25 10:11:07,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:11:07,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2020-09-25 10:11:07,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3761. [2020-09-25 10:11:07,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3761 states. [2020-09-25 10:11:07,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3761 states to 3761 states and 4694 transitions. [2020-09-25 10:11:07,895 INFO L78 Accepts]: Start accepts. Automaton has 3761 states and 4694 transitions. Word has length 192 [2020-09-25 10:11:07,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:07,896 INFO L479 AbstractCegarLoop]: Abstraction has 3761 states and 4694 transitions. [2020-09-25 10:11:07,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:11:07,896 INFO L276 IsEmpty]: Start isEmpty. Operand 3761 states and 4694 transitions. [2020-09-25 10:11:07,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 10:11:07,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:07,912 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, 1, 1, 1, 1, 1] [2020-09-25 10:11:07,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:11:07,912 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:07,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:07,913 INFO L82 PathProgramCache]: Analyzing trace with hash 226560582, now seen corresponding path program 1 times [2020-09-25 10:11:07,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:07,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348707560] [2020-09-25 10:11:07,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:07,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:08,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:08,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:08,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:08,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:10,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:12,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:12,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 10:11:12,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:11:12,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 10:11:12,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:12,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:12,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:12,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 10:11:12,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 10:11:12,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:13,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:13,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:13,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:13,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:13,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:11:13,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:13,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:13,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:11:13,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:13,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:11:13,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:13,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:13,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:13,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:11:13,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:13,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:11:13,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:13,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:13,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:11:13,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:13,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:11:13,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:13,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 10:11:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:13,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:13,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 10:11:13,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:13,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 10:11:13,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:13,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:13,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:13,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:13,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 10:11:13,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:13,228 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 10:11:13,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348707560] [2020-09-25 10:11:13,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:13,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:11:13,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282637937] [2020-09-25 10:11:13,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:11:13,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:13,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:11:13,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:11:13,231 INFO L87 Difference]: Start difference. First operand 3761 states and 4694 transitions. Second operand 5 states. [2020-09-25 10:11:15,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:15,229 INFO L93 Difference]: Finished difference Result 9388 states and 12150 transitions. [2020-09-25 10:11:15,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:11:15,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-09-25 10:11:15,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:15,261 INFO L225 Difference]: With dead ends: 9388 [2020-09-25 10:11:15,261 INFO L226 Difference]: Without dead ends: 5649 [2020-09-25 10:11:15,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:11:15,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5649 states. [2020-09-25 10:11:15,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5649 to 5581. [2020-09-25 10:11:15,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5581 states. [2020-09-25 10:11:15,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5581 states to 5581 states and 7105 transitions. [2020-09-25 10:11:15,411 INFO L78 Accepts]: Start accepts. Automaton has 5581 states and 7105 transitions. Word has length 198 [2020-09-25 10:11:15,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:15,412 INFO L479 AbstractCegarLoop]: Abstraction has 5581 states and 7105 transitions. [2020-09-25 10:11:15,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:11:15,412 INFO L276 IsEmpty]: Start isEmpty. Operand 5581 states and 7105 transitions. [2020-09-25 10:11:15,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 10:11:15,439 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:15,440 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-09-25 10:11:15,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:11:15,441 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:15,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:15,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1015143787, now seen corresponding path program 1 times [2020-09-25 10:11:15,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:15,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198522652] [2020-09-25 10:11:15,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:15,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:15,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:15,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:15,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:15,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:17,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking...